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3615 lines
92 KiB
3615 lines
92 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* drivers/soc/tegra/pmc.c |
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* |
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* Copyright (c) 2010 Google, Inc |
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* Copyright (c) 2018-2020, NVIDIA CORPORATION. All rights reserved. |
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* |
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* Author: |
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* Colin Cross <[email protected]> |
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*/ |
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#define pr_fmt(fmt) "tegra-pmc: " fmt |
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#include <linux/arm-smccc.h> |
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#include <linux/clk.h> |
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#include <linux/clk-provider.h> |
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#include <linux/clkdev.h> |
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#include <linux/clk/clk-conf.h> |
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#include <linux/clk/tegra.h> |
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#include <linux/debugfs.h> |
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#include <linux/delay.h> |
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#include <linux/device.h> |
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#include <linux/err.h> |
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#include <linux/export.h> |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <linux/iopoll.h> |
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#include <linux/irqdomain.h> |
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#include <linux/irq.h> |
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#include <linux/kernel.h> |
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#include <linux/of_address.h> |
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#include <linux/of_clk.h> |
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#include <linux/of.h> |
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#include <linux/of_irq.h> |
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#include <linux/of_platform.h> |
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#include <linux/pinctrl/pinconf-generic.h> |
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#include <linux/pinctrl/pinconf.h> |
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#include <linux/pinctrl/pinctrl.h> |
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#include <linux/platform_device.h> |
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#include <linux/pm_domain.h> |
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#include <linux/reboot.h> |
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#include <linux/reset.h> |
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#include <linux/seq_file.h> |
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#include <linux/slab.h> |
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#include <linux/spinlock.h> |
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#include <soc/tegra/common.h> |
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#include <soc/tegra/fuse.h> |
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#include <soc/tegra/pmc.h> |
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#include <dt-bindings/interrupt-controller/arm-gic.h> |
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#include <dt-bindings/pinctrl/pinctrl-tegra-io-pad.h> |
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#include <dt-bindings/gpio/tegra186-gpio.h> |
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#include <dt-bindings/gpio/tegra194-gpio.h> |
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#include <dt-bindings/soc/tegra-pmc.h> |
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#define PMC_CNTRL 0x0 |
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#define PMC_CNTRL_INTR_POLARITY BIT(17) /* inverts INTR polarity */ |
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#define PMC_CNTRL_CPU_PWRREQ_OE BIT(16) /* CPU pwr req enable */ |
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#define PMC_CNTRL_CPU_PWRREQ_POLARITY BIT(15) /* CPU pwr req polarity */ |
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#define PMC_CNTRL_SIDE_EFFECT_LP0 BIT(14) /* LP0 when CPU pwr gated */ |
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#define PMC_CNTRL_SYSCLK_OE BIT(11) /* system clock enable */ |
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#define PMC_CNTRL_SYSCLK_POLARITY BIT(10) /* sys clk polarity */ |
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#define PMC_CNTRL_PWRREQ_POLARITY BIT(8) |
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#define PMC_CNTRL_BLINK_EN 7 |
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#define PMC_CNTRL_MAIN_RST BIT(4) |
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#define PMC_WAKE_MASK 0x0c |
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#define PMC_WAKE_LEVEL 0x10 |
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#define PMC_WAKE_STATUS 0x14 |
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#define PMC_SW_WAKE_STATUS 0x18 |
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#define PMC_DPD_PADS_ORIDE 0x1c |
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#define PMC_DPD_PADS_ORIDE_BLINK 20 |
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#define DPD_SAMPLE 0x020 |
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#define DPD_SAMPLE_ENABLE BIT(0) |
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#define DPD_SAMPLE_DISABLE (0 << 0) |
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#define PWRGATE_TOGGLE 0x30 |
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#define PWRGATE_TOGGLE_START BIT(8) |
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#define REMOVE_CLAMPING 0x34 |
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#define PWRGATE_STATUS 0x38 |
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#define PMC_BLINK_TIMER 0x40 |
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#define PMC_IMPL_E_33V_PWR 0x40 |
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#define PMC_PWR_DET 0x48 |
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#define PMC_SCRATCH0_MODE_RECOVERY BIT(31) |
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#define PMC_SCRATCH0_MODE_BOOTLOADER BIT(30) |
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#define PMC_SCRATCH0_MODE_RCM BIT(1) |
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#define PMC_SCRATCH0_MODE_MASK (PMC_SCRATCH0_MODE_RECOVERY | \ |
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PMC_SCRATCH0_MODE_BOOTLOADER | \ |
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PMC_SCRATCH0_MODE_RCM) |
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#define PMC_CPUPWRGOOD_TIMER 0xc8 |
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#define PMC_CPUPWROFF_TIMER 0xcc |
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#define PMC_COREPWRGOOD_TIMER 0x3c |
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#define PMC_COREPWROFF_TIMER 0xe0 |
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#define PMC_PWR_DET_VALUE 0xe4 |
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#define PMC_SCRATCH41 0x140 |
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#define PMC_WAKE2_MASK 0x160 |
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#define PMC_WAKE2_LEVEL 0x164 |
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#define PMC_WAKE2_STATUS 0x168 |
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#define PMC_SW_WAKE2_STATUS 0x16c |
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#define PMC_CLK_OUT_CNTRL 0x1a8 |
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#define PMC_CLK_OUT_MUX_MASK GENMASK(1, 0) |
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#define PMC_SENSOR_CTRL 0x1b0 |
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#define PMC_SENSOR_CTRL_SCRATCH_WRITE BIT(2) |
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#define PMC_SENSOR_CTRL_ENABLE_RST BIT(1) |
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#define PMC_RST_STATUS_POR 0 |
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#define PMC_RST_STATUS_WATCHDOG 1 |
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#define PMC_RST_STATUS_SENSOR 2 |
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#define PMC_RST_STATUS_SW_MAIN 3 |
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#define PMC_RST_STATUS_LP0 4 |
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#define PMC_RST_STATUS_AOTAG 5 |
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#define IO_DPD_REQ 0x1b8 |
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#define IO_DPD_REQ_CODE_IDLE (0U << 30) |
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#define IO_DPD_REQ_CODE_OFF (1U << 30) |
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#define IO_DPD_REQ_CODE_ON (2U << 30) |
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#define IO_DPD_REQ_CODE_MASK (3U << 30) |
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#define IO_DPD_STATUS 0x1bc |
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#define IO_DPD2_REQ 0x1c0 |
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#define IO_DPD2_STATUS 0x1c4 |
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#define SEL_DPD_TIM 0x1c8 |
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#define PMC_SCRATCH54 0x258 |
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#define PMC_SCRATCH54_DATA_SHIFT 8 |
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#define PMC_SCRATCH54_ADDR_SHIFT 0 |
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#define PMC_SCRATCH55 0x25c |
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#define PMC_SCRATCH55_RESET_TEGRA BIT(31) |
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#define PMC_SCRATCH55_CNTRL_ID_SHIFT 27 |
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#define PMC_SCRATCH55_PINMUX_SHIFT 24 |
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#define PMC_SCRATCH55_16BITOP BIT(15) |
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#define PMC_SCRATCH55_CHECKSUM_SHIFT 16 |
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#define PMC_SCRATCH55_I2CSLV1_SHIFT 0 |
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#define GPU_RG_CNTRL 0x2d4 |
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/* Tegra186 and later */ |
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#define WAKE_AOWAKE_CNTRL(x) (0x000 + ((x) << 2)) |
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#define WAKE_AOWAKE_CNTRL_LEVEL (1 << 3) |
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#define WAKE_AOWAKE_MASK_W(x) (0x180 + ((x) << 2)) |
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#define WAKE_AOWAKE_MASK_R(x) (0x300 + ((x) << 2)) |
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#define WAKE_AOWAKE_STATUS_W(x) (0x30c + ((x) << 2)) |
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#define WAKE_AOWAKE_STATUS_R(x) (0x48c + ((x) << 2)) |
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#define WAKE_AOWAKE_TIER0_ROUTING(x) (0x4b4 + ((x) << 2)) |
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#define WAKE_AOWAKE_TIER1_ROUTING(x) (0x4c0 + ((x) << 2)) |
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#define WAKE_AOWAKE_TIER2_ROUTING(x) (0x4cc + ((x) << 2)) |
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#define WAKE_AOWAKE_CTRL 0x4f4 |
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#define WAKE_AOWAKE_CTRL_INTR_POLARITY BIT(0) |
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/* for secure PMC */ |
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#define TEGRA_SMC_PMC 0xc2fffe00 |
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#define TEGRA_SMC_PMC_READ 0xaa |
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#define TEGRA_SMC_PMC_WRITE 0xbb |
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struct pmc_clk { |
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struct clk_hw hw; |
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unsigned long offs; |
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u32 mux_shift; |
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u32 force_en_shift; |
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}; |
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#define to_pmc_clk(_hw) container_of(_hw, struct pmc_clk, hw) |
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struct pmc_clk_gate { |
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struct clk_hw hw; |
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unsigned long offs; |
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u32 shift; |
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}; |
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#define to_pmc_clk_gate(_hw) container_of(_hw, struct pmc_clk_gate, hw) |
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struct pmc_clk_init_data { |
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char *name; |
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const char *const *parents; |
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int num_parents; |
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int clk_id; |
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u8 mux_shift; |
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u8 force_en_shift; |
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}; |
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static const char * const clk_out1_parents[] = { "osc", "osc_div2", |
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"osc_div4", "extern1", |
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}; |
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static const char * const clk_out2_parents[] = { "osc", "osc_div2", |
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"osc_div4", "extern2", |
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}; |
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static const char * const clk_out3_parents[] = { "osc", "osc_div2", |
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"osc_div4", "extern3", |
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}; |
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static const struct pmc_clk_init_data tegra_pmc_clks_data[] = { |
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{ |
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.name = "pmc_clk_out_1", |
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.parents = clk_out1_parents, |
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.num_parents = ARRAY_SIZE(clk_out1_parents), |
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.clk_id = TEGRA_PMC_CLK_OUT_1, |
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.mux_shift = 6, |
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.force_en_shift = 2, |
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}, |
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{ |
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.name = "pmc_clk_out_2", |
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.parents = clk_out2_parents, |
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.num_parents = ARRAY_SIZE(clk_out2_parents), |
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.clk_id = TEGRA_PMC_CLK_OUT_2, |
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.mux_shift = 14, |
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.force_en_shift = 10, |
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}, |
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{ |
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.name = "pmc_clk_out_3", |
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.parents = clk_out3_parents, |
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.num_parents = ARRAY_SIZE(clk_out3_parents), |
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.clk_id = TEGRA_PMC_CLK_OUT_3, |
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.mux_shift = 22, |
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.force_en_shift = 18, |
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}, |
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}; |
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struct tegra_powergate { |
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struct generic_pm_domain genpd; |
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struct tegra_pmc *pmc; |
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unsigned int id; |
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struct clk **clks; |
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unsigned int num_clks; |
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struct reset_control *reset; |
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}; |
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struct tegra_io_pad_soc { |
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enum tegra_io_pad id; |
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unsigned int dpd; |
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unsigned int voltage; |
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const char *name; |
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}; |
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struct tegra_pmc_regs { |
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unsigned int scratch0; |
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unsigned int dpd_req; |
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unsigned int dpd_status; |
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unsigned int dpd2_req; |
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unsigned int dpd2_status; |
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unsigned int rst_status; |
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unsigned int rst_source_shift; |
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unsigned int rst_source_mask; |
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unsigned int rst_level_shift; |
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unsigned int rst_level_mask; |
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}; |
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struct tegra_wake_event { |
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const char *name; |
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unsigned int id; |
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unsigned int irq; |
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struct { |
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unsigned int instance; |
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unsigned int pin; |
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} gpio; |
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}; |
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#define TEGRA_WAKE_IRQ(_name, _id, _irq) \ |
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{ \ |
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.name = _name, \ |
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.id = _id, \ |
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.irq = _irq, \ |
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.gpio = { \ |
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.instance = UINT_MAX, \ |
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.pin = UINT_MAX, \ |
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}, \ |
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} |
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#define TEGRA_WAKE_GPIO(_name, _id, _instance, _pin) \ |
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{ \ |
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.name = _name, \ |
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.id = _id, \ |
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.irq = 0, \ |
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.gpio = { \ |
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.instance = _instance, \ |
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.pin = _pin, \ |
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}, \ |
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} |
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struct tegra_pmc_soc { |
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unsigned int num_powergates; |
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const char *const *powergates; |
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unsigned int num_cpu_powergates; |
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const u8 *cpu_powergates; |
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bool has_tsense_reset; |
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bool has_gpu_clamps; |
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bool needs_mbist_war; |
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bool has_impl_33v_pwr; |
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bool maybe_tz_only; |
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const struct tegra_io_pad_soc *io_pads; |
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unsigned int num_io_pads; |
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const struct pinctrl_pin_desc *pin_descs; |
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unsigned int num_pin_descs; |
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const struct tegra_pmc_regs *regs; |
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void (*init)(struct tegra_pmc *pmc); |
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void (*setup_irq_polarity)(struct tegra_pmc *pmc, |
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struct device_node *np, |
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bool invert); |
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int (*irq_set_wake)(struct irq_data *data, unsigned int on); |
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int (*irq_set_type)(struct irq_data *data, unsigned int type); |
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int (*powergate_set)(struct tegra_pmc *pmc, unsigned int id, |
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bool new_state); |
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const char * const *reset_sources; |
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unsigned int num_reset_sources; |
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const char * const *reset_levels; |
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unsigned int num_reset_levels; |
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/* |
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* These describe events that can wake the system from sleep (i.e. |
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* LP0 or SC7). Wakeup from other sleep states (such as LP1 or LP2) |
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* are dealt with in the LIC. |
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*/ |
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const struct tegra_wake_event *wake_events; |
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unsigned int num_wake_events; |
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const struct pmc_clk_init_data *pmc_clks_data; |
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unsigned int num_pmc_clks; |
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bool has_blink_output; |
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}; |
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/** |
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* struct tegra_pmc - NVIDIA Tegra PMC |
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* @dev: pointer to PMC device structure |
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* @base: pointer to I/O remapped register region |
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* @wake: pointer to I/O remapped region for WAKE registers |
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* @aotag: pointer to I/O remapped region for AOTAG registers |
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* @scratch: pointer to I/O remapped region for scratch registers |
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* @clk: pointer to pclk clock |
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* @soc: pointer to SoC data structure |
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* @tz_only: flag specifying if the PMC can only be accessed via TrustZone |
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* @debugfs: pointer to debugfs entry |
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* @rate: currently configured rate of pclk |
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* @suspend_mode: lowest suspend mode available |
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* @cpu_good_time: CPU power good time (in microseconds) |
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* @cpu_off_time: CPU power off time (in microsecends) |
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* @core_osc_time: core power good OSC time (in microseconds) |
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* @core_pmu_time: core power good PMU time (in microseconds) |
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* @core_off_time: core power off time (in microseconds) |
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* @corereq_high: core power request is active-high |
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* @sysclkreq_high: system clock request is active-high |
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* @combined_req: combined power request for CPU & core |
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* @cpu_pwr_good_en: CPU power good signal is enabled |
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* @lp0_vec_phys: physical base address of the LP0 warm boot code |
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* @lp0_vec_size: size of the LP0 warm boot code |
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* @powergates_available: Bitmap of available power gates |
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* @powergates_lock: mutex for power gate register access |
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* @pctl_dev: pin controller exposed by the PMC |
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* @domain: IRQ domain provided by the PMC |
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* @irq: chip implementation for the IRQ domain |
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* @clk_nb: pclk clock changes handler |
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*/ |
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struct tegra_pmc { |
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struct device *dev; |
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void __iomem *base; |
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void __iomem *wake; |
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void __iomem *aotag; |
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void __iomem *scratch; |
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struct clk *clk; |
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struct dentry *debugfs; |
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const struct tegra_pmc_soc *soc; |
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bool tz_only; |
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unsigned long rate; |
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enum tegra_suspend_mode suspend_mode; |
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u32 cpu_good_time; |
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u32 cpu_off_time; |
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u32 core_osc_time; |
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u32 core_pmu_time; |
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u32 core_off_time; |
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bool corereq_high; |
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bool sysclkreq_high; |
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bool combined_req; |
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bool cpu_pwr_good_en; |
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u32 lp0_vec_phys; |
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u32 lp0_vec_size; |
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DECLARE_BITMAP(powergates_available, TEGRA_POWERGATE_MAX); |
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struct mutex powergates_lock; |
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struct pinctrl_dev *pctl_dev; |
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struct irq_domain *domain; |
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struct irq_chip irq; |
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struct notifier_block clk_nb; |
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}; |
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static struct tegra_pmc *pmc = &(struct tegra_pmc) { |
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.base = NULL, |
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.suspend_mode = TEGRA_SUSPEND_NONE, |
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}; |
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static inline struct tegra_powergate * |
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to_powergate(struct generic_pm_domain *domain) |
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{ |
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return container_of(domain, struct tegra_powergate, genpd); |
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} |
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static u32 tegra_pmc_readl(struct tegra_pmc *pmc, unsigned long offset) |
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{ |
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struct arm_smccc_res res; |
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if (pmc->tz_only) { |
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arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_READ, offset, 0, 0, |
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0, 0, 0, &res); |
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if (res.a0) { |
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if (pmc->dev) |
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dev_warn(pmc->dev, "%s(): SMC failed: %lu\n", |
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__func__, res.a0); |
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else |
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pr_warn("%s(): SMC failed: %lu\n", __func__, |
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res.a0); |
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} |
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return res.a1; |
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} |
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return readl(pmc->base + offset); |
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} |
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static void tegra_pmc_writel(struct tegra_pmc *pmc, u32 value, |
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unsigned long offset) |
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{ |
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struct arm_smccc_res res; |
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if (pmc->tz_only) { |
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arm_smccc_smc(TEGRA_SMC_PMC, TEGRA_SMC_PMC_WRITE, offset, |
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value, 0, 0, 0, 0, &res); |
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if (res.a0) { |
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if (pmc->dev) |
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dev_warn(pmc->dev, "%s(): SMC failed: %lu\n", |
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__func__, res.a0); |
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else |
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pr_warn("%s(): SMC failed: %lu\n", __func__, |
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res.a0); |
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} |
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} else { |
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writel(value, pmc->base + offset); |
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} |
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} |
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static u32 tegra_pmc_scratch_readl(struct tegra_pmc *pmc, unsigned long offset) |
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{ |
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if (pmc->tz_only) |
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return tegra_pmc_readl(pmc, offset); |
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return readl(pmc->scratch + offset); |
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} |
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static void tegra_pmc_scratch_writel(struct tegra_pmc *pmc, u32 value, |
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unsigned long offset) |
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{ |
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if (pmc->tz_only) |
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tegra_pmc_writel(pmc, value, offset); |
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else |
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writel(value, pmc->scratch + offset); |
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} |
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/* |
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* TODO Figure out a way to call this with the struct tegra_pmc * passed in. |
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* This currently doesn't work because readx_poll_timeout() can only operate |
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* on functions that take a single argument. |
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*/ |
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static inline bool tegra_powergate_state(int id) |
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{ |
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if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps) |
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return (tegra_pmc_readl(pmc, GPU_RG_CNTRL) & 0x1) == 0; |
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else |
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return (tegra_pmc_readl(pmc, PWRGATE_STATUS) & BIT(id)) != 0; |
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} |
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static inline bool tegra_powergate_is_valid(struct tegra_pmc *pmc, int id) |
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{ |
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return (pmc->soc && pmc->soc->powergates[id]); |
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} |
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static inline bool tegra_powergate_is_available(struct tegra_pmc *pmc, int id) |
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{ |
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return test_bit(id, pmc->powergates_available); |
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} |
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static int tegra_powergate_lookup(struct tegra_pmc *pmc, const char *name) |
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{ |
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unsigned int i; |
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|
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if (!pmc || !pmc->soc || !name) |
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return -EINVAL; |
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for (i = 0; i < pmc->soc->num_powergates; i++) { |
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if (!tegra_powergate_is_valid(pmc, i)) |
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continue; |
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if (!strcmp(name, pmc->soc->powergates[i])) |
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return i; |
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} |
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return -ENODEV; |
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} |
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|
|
static int tegra20_powergate_set(struct tegra_pmc *pmc, unsigned int id, |
|
bool new_state) |
|
{ |
|
unsigned int retries = 100; |
|
bool status; |
|
int ret; |
|
|
|
/* |
|
* As per TRM documentation, the toggle command will be dropped by PMC |
|
* if there is contention with a HW-initiated toggling (i.e. CPU core |
|
* power-gated), the command should be retried in that case. |
|
*/ |
|
do { |
|
tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE); |
|
|
|
/* wait for PMC to execute the command */ |
|
ret = readx_poll_timeout(tegra_powergate_state, id, status, |
|
status == new_state, 1, 10); |
|
} while (ret == -ETIMEDOUT && retries--); |
|
|
|
return ret; |
|
} |
|
|
|
static inline bool tegra_powergate_toggle_ready(struct tegra_pmc *pmc) |
|
{ |
|
return !(tegra_pmc_readl(pmc, PWRGATE_TOGGLE) & PWRGATE_TOGGLE_START); |
|
} |
|
|
|
static int tegra114_powergate_set(struct tegra_pmc *pmc, unsigned int id, |
|
bool new_state) |
|
{ |
|
bool status; |
|
int err; |
|
|
|
/* wait while PMC power gating is contended */ |
|
err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status, |
|
status == true, 1, 100); |
|
if (err) |
|
return err; |
|
|
|
tegra_pmc_writel(pmc, PWRGATE_TOGGLE_START | id, PWRGATE_TOGGLE); |
|
|
|
/* wait for PMC to accept the command */ |
|
err = readx_poll_timeout(tegra_powergate_toggle_ready, pmc, status, |
|
status == true, 1, 100); |
|
if (err) |
|
return err; |
|
|
|
/* wait for PMC to execute the command */ |
|
err = readx_poll_timeout(tegra_powergate_state, id, status, |
|
status == new_state, 10, 100000); |
|
if (err) |
|
return err; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* tegra_powergate_set() - set the state of a partition |
|
* @pmc: power management controller |
|
* @id: partition ID |
|
* @new_state: new state of the partition |
|
*/ |
|
static int tegra_powergate_set(struct tegra_pmc *pmc, unsigned int id, |
|
bool new_state) |
|
{ |
|
int err; |
|
|
|
if (id == TEGRA_POWERGATE_3D && pmc->soc->has_gpu_clamps) |
|
return -EINVAL; |
|
|
|
mutex_lock(&pmc->powergates_lock); |
|
|
|
if (tegra_powergate_state(id) == new_state) { |
|
mutex_unlock(&pmc->powergates_lock); |
|
return 0; |
|
} |
|
|
|
err = pmc->soc->powergate_set(pmc, id, new_state); |
|
|
|
mutex_unlock(&pmc->powergates_lock); |
|
|
|
return err; |
|
} |
|
|
|
static int __tegra_powergate_remove_clamping(struct tegra_pmc *pmc, |
|
unsigned int id) |
|
{ |
|
u32 mask; |
|
|
|
mutex_lock(&pmc->powergates_lock); |
|
|
|
/* |
|
* On Tegra124 and later, the clamps for the GPU are controlled by a |
|
* separate register (with different semantics). |
|
*/ |
|
if (id == TEGRA_POWERGATE_3D) { |
|
if (pmc->soc->has_gpu_clamps) { |
|
tegra_pmc_writel(pmc, 0, GPU_RG_CNTRL); |
|
goto out; |
|
} |
|
} |
|
|
|
/* |
|
* Tegra 2 has a bug where PCIE and VDE clamping masks are |
|
* swapped relatively to the partition ids |
|
*/ |
|
if (id == TEGRA_POWERGATE_VDEC) |
|
mask = (1 << TEGRA_POWERGATE_PCIE); |
|
else if (id == TEGRA_POWERGATE_PCIE) |
|
mask = (1 << TEGRA_POWERGATE_VDEC); |
|
else |
|
mask = (1 << id); |
|
|
|
tegra_pmc_writel(pmc, mask, REMOVE_CLAMPING); |
|
|
|
out: |
|
mutex_unlock(&pmc->powergates_lock); |
|
|
|
return 0; |
|
} |
|
|
|
static void tegra_powergate_disable_clocks(struct tegra_powergate *pg) |
|
{ |
|
unsigned int i; |
|
|
|
for (i = 0; i < pg->num_clks; i++) |
|
clk_disable_unprepare(pg->clks[i]); |
|
} |
|
|
|
static int tegra_powergate_enable_clocks(struct tegra_powergate *pg) |
|
{ |
|
unsigned int i; |
|
int err; |
|
|
|
for (i = 0; i < pg->num_clks; i++) { |
|
err = clk_prepare_enable(pg->clks[i]); |
|
if (err) |
|
goto out; |
|
} |
|
|
|
return 0; |
|
|
|
out: |
|
while (i--) |
|
clk_disable_unprepare(pg->clks[i]); |
|
|
|
return err; |
|
} |
|
|
|
int __weak tegra210_clk_handle_mbist_war(unsigned int id) |
|
{ |
|
return 0; |
|
} |
|
|
|
static int tegra_powergate_power_up(struct tegra_powergate *pg, |
|
bool disable_clocks) |
|
{ |
|
int err; |
|
|
|
err = reset_control_assert(pg->reset); |
|
if (err) |
|
return err; |
|
|
|
usleep_range(10, 20); |
|
|
|
err = tegra_powergate_set(pg->pmc, pg->id, true); |
|
if (err < 0) |
|
return err; |
|
|
|
usleep_range(10, 20); |
|
|
|
err = tegra_powergate_enable_clocks(pg); |
|
if (err) |
|
goto disable_clks; |
|
|
|
usleep_range(10, 20); |
|
|
|
err = __tegra_powergate_remove_clamping(pg->pmc, pg->id); |
|
if (err) |
|
goto disable_clks; |
|
|
|
usleep_range(10, 20); |
|
|
|
err = reset_control_deassert(pg->reset); |
|
if (err) |
|
goto powergate_off; |
|
|
|
usleep_range(10, 20); |
|
|
|
if (pg->pmc->soc->needs_mbist_war) |
|
err = tegra210_clk_handle_mbist_war(pg->id); |
|
if (err) |
|
goto disable_clks; |
|
|
|
if (disable_clocks) |
|
tegra_powergate_disable_clocks(pg); |
|
|
|
return 0; |
|
|
|
disable_clks: |
|
tegra_powergate_disable_clocks(pg); |
|
usleep_range(10, 20); |
|
|
|
powergate_off: |
|
tegra_powergate_set(pg->pmc, pg->id, false); |
|
|
|
return err; |
|
} |
|
|
|
static int tegra_powergate_power_down(struct tegra_powergate *pg) |
|
{ |
|
int err; |
|
|
|
err = tegra_powergate_enable_clocks(pg); |
|
if (err) |
|
return err; |
|
|
|
usleep_range(10, 20); |
|
|
|
err = reset_control_assert(pg->reset); |
|
if (err) |
|
goto disable_clks; |
|
|
|
usleep_range(10, 20); |
|
|
|
tegra_powergate_disable_clocks(pg); |
|
|
|
usleep_range(10, 20); |
|
|
|
err = tegra_powergate_set(pg->pmc, pg->id, false); |
|
if (err) |
|
goto assert_resets; |
|
|
|
return 0; |
|
|
|
assert_resets: |
|
tegra_powergate_enable_clocks(pg); |
|
usleep_range(10, 20); |
|
reset_control_deassert(pg->reset); |
|
usleep_range(10, 20); |
|
|
|
disable_clks: |
|
tegra_powergate_disable_clocks(pg); |
|
|
|
return err; |
|
} |
|
|
|
static int tegra_genpd_power_on(struct generic_pm_domain *domain) |
|
{ |
|
struct tegra_powergate *pg = to_powergate(domain); |
|
struct device *dev = pg->pmc->dev; |
|
int err; |
|
|
|
err = tegra_powergate_power_up(pg, true); |
|
if (err) { |
|
dev_err(dev, "failed to turn on PM domain %s: %d\n", |
|
pg->genpd.name, err); |
|
goto out; |
|
} |
|
|
|
reset_control_release(pg->reset); |
|
|
|
out: |
|
return err; |
|
} |
|
|
|
static int tegra_genpd_power_off(struct generic_pm_domain *domain) |
|
{ |
|
struct tegra_powergate *pg = to_powergate(domain); |
|
struct device *dev = pg->pmc->dev; |
|
int err; |
|
|
|
err = reset_control_acquire(pg->reset); |
|
if (err < 0) { |
|
pr_err("failed to acquire resets: %d\n", err); |
|
return err; |
|
} |
|
|
|
err = tegra_powergate_power_down(pg); |
|
if (err) { |
|
dev_err(dev, "failed to turn off PM domain %s: %d\n", |
|
pg->genpd.name, err); |
|
reset_control_release(pg->reset); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* tegra_powergate_power_on() - power on partition |
|
* @id: partition ID |
|
*/ |
|
int tegra_powergate_power_on(unsigned int id) |
|
{ |
|
if (!tegra_powergate_is_available(pmc, id)) |
|
return -EINVAL; |
|
|
|
return tegra_powergate_set(pmc, id, true); |
|
} |
|
EXPORT_SYMBOL(tegra_powergate_power_on); |
|
|
|
/** |
|
* tegra_powergate_power_off() - power off partition |
|
* @id: partition ID |
|
*/ |
|
int tegra_powergate_power_off(unsigned int id) |
|
{ |
|
if (!tegra_powergate_is_available(pmc, id)) |
|
return -EINVAL; |
|
|
|
return tegra_powergate_set(pmc, id, false); |
|
} |
|
EXPORT_SYMBOL(tegra_powergate_power_off); |
|
|
|
/** |
|
* tegra_powergate_is_powered() - check if partition is powered |
|
* @pmc: power management controller |
|
* @id: partition ID |
|
*/ |
|
static int tegra_powergate_is_powered(struct tegra_pmc *pmc, unsigned int id) |
|
{ |
|
if (!tegra_powergate_is_valid(pmc, id)) |
|
return -EINVAL; |
|
|
|
return tegra_powergate_state(id); |
|
} |
|
|
|
/** |
|
* tegra_powergate_remove_clamping() - remove power clamps for partition |
|
* @id: partition ID |
|
*/ |
|
int tegra_powergate_remove_clamping(unsigned int id) |
|
{ |
|
if (!tegra_powergate_is_available(pmc, id)) |
|
return -EINVAL; |
|
|
|
return __tegra_powergate_remove_clamping(pmc, id); |
|
} |
|
EXPORT_SYMBOL(tegra_powergate_remove_clamping); |
|
|
|
/** |
|
* tegra_powergate_sequence_power_up() - power up partition |
|
* @id: partition ID |
|
* @clk: clock for partition |
|
* @rst: reset for partition |
|
* |
|
* Must be called with clk disabled, and returns with clk enabled. |
|
*/ |
|
int tegra_powergate_sequence_power_up(unsigned int id, struct clk *clk, |
|
struct reset_control *rst) |
|
{ |
|
struct tegra_powergate *pg; |
|
int err; |
|
|
|
if (!tegra_powergate_is_available(pmc, id)) |
|
return -EINVAL; |
|
|
|
pg = kzalloc(sizeof(*pg), GFP_KERNEL); |
|
if (!pg) |
|
return -ENOMEM; |
|
|
|
pg->id = id; |
|
pg->clks = &clk; |
|
pg->num_clks = 1; |
|
pg->reset = rst; |
|
pg->pmc = pmc; |
|
|
|
err = tegra_powergate_power_up(pg, false); |
|
if (err) |
|
dev_err(pmc->dev, "failed to turn on partition %d: %d\n", id, |
|
err); |
|
|
|
kfree(pg); |
|
|
|
return err; |
|
} |
|
EXPORT_SYMBOL(tegra_powergate_sequence_power_up); |
|
|
|
/** |
|
* tegra_get_cpu_powergate_id() - convert from CPU ID to partition ID |
|
* @pmc: power management controller |
|
* @cpuid: CPU partition ID |
|
* |
|
* Returns the partition ID corresponding to the CPU partition ID or a |
|
* negative error code on failure. |
|
*/ |
|
static int tegra_get_cpu_powergate_id(struct tegra_pmc *pmc, |
|
unsigned int cpuid) |
|
{ |
|
if (pmc->soc && cpuid < pmc->soc->num_cpu_powergates) |
|
return pmc->soc->cpu_powergates[cpuid]; |
|
|
|
return -EINVAL; |
|
} |
|
|
|
/** |
|
* tegra_pmc_cpu_is_powered() - check if CPU partition is powered |
|
* @cpuid: CPU partition ID |
|
*/ |
|
bool tegra_pmc_cpu_is_powered(unsigned int cpuid) |
|
{ |
|
int id; |
|
|
|
id = tegra_get_cpu_powergate_id(pmc, cpuid); |
|
if (id < 0) |
|
return false; |
|
|
|
return tegra_powergate_is_powered(pmc, id); |
|
} |
|
|
|
/** |
|
* tegra_pmc_cpu_power_on() - power on CPU partition |
|
* @cpuid: CPU partition ID |
|
*/ |
|
int tegra_pmc_cpu_power_on(unsigned int cpuid) |
|
{ |
|
int id; |
|
|
|
id = tegra_get_cpu_powergate_id(pmc, cpuid); |
|
if (id < 0) |
|
return id; |
|
|
|
return tegra_powergate_set(pmc, id, true); |
|
} |
|
|
|
/** |
|
* tegra_pmc_cpu_remove_clamping() - remove power clamps for CPU partition |
|
* @cpuid: CPU partition ID |
|
*/ |
|
int tegra_pmc_cpu_remove_clamping(unsigned int cpuid) |
|
{ |
|
int id; |
|
|
|
id = tegra_get_cpu_powergate_id(pmc, cpuid); |
|
if (id < 0) |
|
return id; |
|
|
|
return tegra_powergate_remove_clamping(id); |
|
} |
|
|
|
static int tegra_pmc_restart_notify(struct notifier_block *this, |
|
unsigned long action, void *data) |
|
{ |
|
const char *cmd = data; |
|
u32 value; |
|
|
|
value = tegra_pmc_scratch_readl(pmc, pmc->soc->regs->scratch0); |
|
value &= ~PMC_SCRATCH0_MODE_MASK; |
|
|
|
if (cmd) { |
|
if (strcmp(cmd, "recovery") == 0) |
|
value |= PMC_SCRATCH0_MODE_RECOVERY; |
|
|
|
if (strcmp(cmd, "bootloader") == 0) |
|
value |= PMC_SCRATCH0_MODE_BOOTLOADER; |
|
|
|
if (strcmp(cmd, "forced-recovery") == 0) |
|
value |= PMC_SCRATCH0_MODE_RCM; |
|
} |
|
|
|
tegra_pmc_scratch_writel(pmc, value, pmc->soc->regs->scratch0); |
|
|
|
/* reset everything but PMC_SCRATCH0 and PMC_RST_STATUS */ |
|
value = tegra_pmc_readl(pmc, PMC_CNTRL); |
|
value |= PMC_CNTRL_MAIN_RST; |
|
tegra_pmc_writel(pmc, value, PMC_CNTRL); |
|
|
|
return NOTIFY_DONE; |
|
} |
|
|
|
static struct notifier_block tegra_pmc_restart_handler = { |
|
.notifier_call = tegra_pmc_restart_notify, |
|
.priority = 128, |
|
}; |
|
|
|
static int powergate_show(struct seq_file *s, void *data) |
|
{ |
|
unsigned int i; |
|
int status; |
|
|
|
seq_printf(s, " powergate powered\n"); |
|
seq_printf(s, "------------------\n"); |
|
|
|
for (i = 0; i < pmc->soc->num_powergates; i++) { |
|
status = tegra_powergate_is_powered(pmc, i); |
|
if (status < 0) |
|
continue; |
|
|
|
seq_printf(s, " %9s %7s\n", pmc->soc->powergates[i], |
|
status ? "yes" : "no"); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
DEFINE_SHOW_ATTRIBUTE(powergate); |
|
|
|
static int tegra_powergate_debugfs_init(void) |
|
{ |
|
pmc->debugfs = debugfs_create_file("powergate", S_IRUGO, NULL, NULL, |
|
&powergate_fops); |
|
if (!pmc->debugfs) |
|
return -ENOMEM; |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_powergate_of_get_clks(struct tegra_powergate *pg, |
|
struct device_node *np) |
|
{ |
|
struct clk *clk; |
|
unsigned int i, count; |
|
int err; |
|
|
|
count = of_clk_get_parent_count(np); |
|
if (count == 0) |
|
return -ENODEV; |
|
|
|
pg->clks = kcalloc(count, sizeof(clk), GFP_KERNEL); |
|
if (!pg->clks) |
|
return -ENOMEM; |
|
|
|
for (i = 0; i < count; i++) { |
|
pg->clks[i] = of_clk_get(np, i); |
|
if (IS_ERR(pg->clks[i])) { |
|
err = PTR_ERR(pg->clks[i]); |
|
goto err; |
|
} |
|
} |
|
|
|
pg->num_clks = count; |
|
|
|
return 0; |
|
|
|
err: |
|
while (i--) |
|
clk_put(pg->clks[i]); |
|
|
|
kfree(pg->clks); |
|
|
|
return err; |
|
} |
|
|
|
static int tegra_powergate_of_get_resets(struct tegra_powergate *pg, |
|
struct device_node *np, bool off) |
|
{ |
|
struct device *dev = pg->pmc->dev; |
|
int err; |
|
|
|
pg->reset = of_reset_control_array_get_exclusive_released(np); |
|
if (IS_ERR(pg->reset)) { |
|
err = PTR_ERR(pg->reset); |
|
dev_err(dev, "failed to get device resets: %d\n", err); |
|
return err; |
|
} |
|
|
|
err = reset_control_acquire(pg->reset); |
|
if (err < 0) { |
|
pr_err("failed to acquire resets: %d\n", err); |
|
goto out; |
|
} |
|
|
|
if (off) { |
|
err = reset_control_assert(pg->reset); |
|
} else { |
|
err = reset_control_deassert(pg->reset); |
|
if (err < 0) |
|
goto out; |
|
|
|
reset_control_release(pg->reset); |
|
} |
|
|
|
out: |
|
if (err) { |
|
reset_control_release(pg->reset); |
|
reset_control_put(pg->reset); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
static int tegra_powergate_add(struct tegra_pmc *pmc, struct device_node *np) |
|
{ |
|
struct device *dev = pmc->dev; |
|
struct tegra_powergate *pg; |
|
int id, err = 0; |
|
bool off; |
|
|
|
pg = kzalloc(sizeof(*pg), GFP_KERNEL); |
|
if (!pg) |
|
return -ENOMEM; |
|
|
|
id = tegra_powergate_lookup(pmc, np->name); |
|
if (id < 0) { |
|
dev_err(dev, "powergate lookup failed for %pOFn: %d\n", np, id); |
|
err = -ENODEV; |
|
goto free_mem; |
|
} |
|
|
|
/* |
|
* Clear the bit for this powergate so it cannot be managed |
|
* directly via the legacy APIs for controlling powergates. |
|
*/ |
|
clear_bit(id, pmc->powergates_available); |
|
|
|
pg->id = id; |
|
pg->genpd.name = np->name; |
|
pg->genpd.power_off = tegra_genpd_power_off; |
|
pg->genpd.power_on = tegra_genpd_power_on; |
|
pg->pmc = pmc; |
|
|
|
off = !tegra_powergate_is_powered(pmc, pg->id); |
|
|
|
err = tegra_powergate_of_get_clks(pg, np); |
|
if (err < 0) { |
|
dev_err(dev, "failed to get clocks for %pOFn: %d\n", np, err); |
|
goto set_available; |
|
} |
|
|
|
err = tegra_powergate_of_get_resets(pg, np, off); |
|
if (err < 0) { |
|
dev_err(dev, "failed to get resets for %pOFn: %d\n", np, err); |
|
goto remove_clks; |
|
} |
|
|
|
if (!IS_ENABLED(CONFIG_PM_GENERIC_DOMAINS)) { |
|
if (off) |
|
WARN_ON(tegra_powergate_power_up(pg, true)); |
|
|
|
goto remove_resets; |
|
} |
|
|
|
err = pm_genpd_init(&pg->genpd, NULL, off); |
|
if (err < 0) { |
|
dev_err(dev, "failed to initialise PM domain %pOFn: %d\n", np, |
|
err); |
|
goto remove_resets; |
|
} |
|
|
|
err = of_genpd_add_provider_simple(np, &pg->genpd); |
|
if (err < 0) { |
|
dev_err(dev, "failed to add PM domain provider for %pOFn: %d\n", |
|
np, err); |
|
goto remove_genpd; |
|
} |
|
|
|
dev_dbg(dev, "added PM domain %s\n", pg->genpd.name); |
|
|
|
return 0; |
|
|
|
remove_genpd: |
|
pm_genpd_remove(&pg->genpd); |
|
|
|
remove_resets: |
|
reset_control_put(pg->reset); |
|
|
|
remove_clks: |
|
while (pg->num_clks--) |
|
clk_put(pg->clks[pg->num_clks]); |
|
|
|
kfree(pg->clks); |
|
|
|
set_available: |
|
set_bit(id, pmc->powergates_available); |
|
|
|
free_mem: |
|
kfree(pg); |
|
|
|
return err; |
|
} |
|
|
|
static int tegra_powergate_init(struct tegra_pmc *pmc, |
|
struct device_node *parent) |
|
{ |
|
struct device_node *np, *child; |
|
int err = 0; |
|
|
|
np = of_get_child_by_name(parent, "powergates"); |
|
if (!np) |
|
return 0; |
|
|
|
for_each_child_of_node(np, child) { |
|
err = tegra_powergate_add(pmc, child); |
|
if (err < 0) { |
|
of_node_put(child); |
|
break; |
|
} |
|
} |
|
|
|
of_node_put(np); |
|
|
|
return err; |
|
} |
|
|
|
static void tegra_powergate_remove(struct generic_pm_domain *genpd) |
|
{ |
|
struct tegra_powergate *pg = to_powergate(genpd); |
|
|
|
reset_control_put(pg->reset); |
|
|
|
while (pg->num_clks--) |
|
clk_put(pg->clks[pg->num_clks]); |
|
|
|
kfree(pg->clks); |
|
|
|
set_bit(pg->id, pmc->powergates_available); |
|
|
|
kfree(pg); |
|
} |
|
|
|
static void tegra_powergate_remove_all(struct device_node *parent) |
|
{ |
|
struct generic_pm_domain *genpd; |
|
struct device_node *np, *child; |
|
|
|
np = of_get_child_by_name(parent, "powergates"); |
|
if (!np) |
|
return; |
|
|
|
for_each_child_of_node(np, child) { |
|
of_genpd_del_provider(child); |
|
|
|
genpd = of_genpd_remove_last(child); |
|
if (IS_ERR(genpd)) |
|
continue; |
|
|
|
tegra_powergate_remove(genpd); |
|
} |
|
|
|
of_node_put(np); |
|
} |
|
|
|
static const struct tegra_io_pad_soc * |
|
tegra_io_pad_find(struct tegra_pmc *pmc, enum tegra_io_pad id) |
|
{ |
|
unsigned int i; |
|
|
|
for (i = 0; i < pmc->soc->num_io_pads; i++) |
|
if (pmc->soc->io_pads[i].id == id) |
|
return &pmc->soc->io_pads[i]; |
|
|
|
return NULL; |
|
} |
|
|
|
static int tegra_io_pad_get_dpd_register_bit(struct tegra_pmc *pmc, |
|
enum tegra_io_pad id, |
|
unsigned long *request, |
|
unsigned long *status, |
|
u32 *mask) |
|
{ |
|
const struct tegra_io_pad_soc *pad; |
|
|
|
pad = tegra_io_pad_find(pmc, id); |
|
if (!pad) { |
|
dev_err(pmc->dev, "invalid I/O pad ID %u\n", id); |
|
return -ENOENT; |
|
} |
|
|
|
if (pad->dpd == UINT_MAX) |
|
return -ENOTSUPP; |
|
|
|
*mask = BIT(pad->dpd % 32); |
|
|
|
if (pad->dpd < 32) { |
|
*status = pmc->soc->regs->dpd_status; |
|
*request = pmc->soc->regs->dpd_req; |
|
} else { |
|
*status = pmc->soc->regs->dpd2_status; |
|
*request = pmc->soc->regs->dpd2_req; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_io_pad_prepare(struct tegra_pmc *pmc, enum tegra_io_pad id, |
|
unsigned long *request, unsigned long *status, |
|
u32 *mask) |
|
{ |
|
unsigned long rate, value; |
|
int err; |
|
|
|
err = tegra_io_pad_get_dpd_register_bit(pmc, id, request, status, mask); |
|
if (err) |
|
return err; |
|
|
|
if (pmc->clk) { |
|
rate = pmc->rate; |
|
if (!rate) { |
|
dev_err(pmc->dev, "failed to get clock rate\n"); |
|
return -ENODEV; |
|
} |
|
|
|
tegra_pmc_writel(pmc, DPD_SAMPLE_ENABLE, DPD_SAMPLE); |
|
|
|
/* must be at least 200 ns, in APB (PCLK) clock cycles */ |
|
value = DIV_ROUND_UP(1000000000, rate); |
|
value = DIV_ROUND_UP(200, value); |
|
tegra_pmc_writel(pmc, value, SEL_DPD_TIM); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_io_pad_poll(struct tegra_pmc *pmc, unsigned long offset, |
|
u32 mask, u32 val, unsigned long timeout) |
|
{ |
|
u32 value; |
|
|
|
timeout = jiffies + msecs_to_jiffies(timeout); |
|
|
|
while (time_after(timeout, jiffies)) { |
|
value = tegra_pmc_readl(pmc, offset); |
|
if ((value & mask) == val) |
|
return 0; |
|
|
|
usleep_range(250, 1000); |
|
} |
|
|
|
return -ETIMEDOUT; |
|
} |
|
|
|
static void tegra_io_pad_unprepare(struct tegra_pmc *pmc) |
|
{ |
|
if (pmc->clk) |
|
tegra_pmc_writel(pmc, DPD_SAMPLE_DISABLE, DPD_SAMPLE); |
|
} |
|
|
|
/** |
|
* tegra_io_pad_power_enable() - enable power to I/O pad |
|
* @id: Tegra I/O pad ID for which to enable power |
|
* |
|
* Returns: 0 on success or a negative error code on failure. |
|
*/ |
|
int tegra_io_pad_power_enable(enum tegra_io_pad id) |
|
{ |
|
unsigned long request, status; |
|
u32 mask; |
|
int err; |
|
|
|
mutex_lock(&pmc->powergates_lock); |
|
|
|
err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask); |
|
if (err < 0) { |
|
dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err); |
|
goto unlock; |
|
} |
|
|
|
tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_OFF | mask, request); |
|
|
|
err = tegra_io_pad_poll(pmc, status, mask, 0, 250); |
|
if (err < 0) { |
|
dev_err(pmc->dev, "failed to enable I/O pad: %d\n", err); |
|
goto unlock; |
|
} |
|
|
|
tegra_io_pad_unprepare(pmc); |
|
|
|
unlock: |
|
mutex_unlock(&pmc->powergates_lock); |
|
return err; |
|
} |
|
EXPORT_SYMBOL(tegra_io_pad_power_enable); |
|
|
|
/** |
|
* tegra_io_pad_power_disable() - disable power to I/O pad |
|
* @id: Tegra I/O pad ID for which to disable power |
|
* |
|
* Returns: 0 on success or a negative error code on failure. |
|
*/ |
|
int tegra_io_pad_power_disable(enum tegra_io_pad id) |
|
{ |
|
unsigned long request, status; |
|
u32 mask; |
|
int err; |
|
|
|
mutex_lock(&pmc->powergates_lock); |
|
|
|
err = tegra_io_pad_prepare(pmc, id, &request, &status, &mask); |
|
if (err < 0) { |
|
dev_err(pmc->dev, "failed to prepare I/O pad: %d\n", err); |
|
goto unlock; |
|
} |
|
|
|
tegra_pmc_writel(pmc, IO_DPD_REQ_CODE_ON | mask, request); |
|
|
|
err = tegra_io_pad_poll(pmc, status, mask, mask, 250); |
|
if (err < 0) { |
|
dev_err(pmc->dev, "failed to disable I/O pad: %d\n", err); |
|
goto unlock; |
|
} |
|
|
|
tegra_io_pad_unprepare(pmc); |
|
|
|
unlock: |
|
mutex_unlock(&pmc->powergates_lock); |
|
return err; |
|
} |
|
EXPORT_SYMBOL(tegra_io_pad_power_disable); |
|
|
|
static int tegra_io_pad_is_powered(struct tegra_pmc *pmc, enum tegra_io_pad id) |
|
{ |
|
unsigned long request, status; |
|
u32 mask, value; |
|
int err; |
|
|
|
err = tegra_io_pad_get_dpd_register_bit(pmc, id, &request, &status, |
|
&mask); |
|
if (err) |
|
return err; |
|
|
|
value = tegra_pmc_readl(pmc, status); |
|
|
|
return !(value & mask); |
|
} |
|
|
|
static int tegra_io_pad_set_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id, |
|
int voltage) |
|
{ |
|
const struct tegra_io_pad_soc *pad; |
|
u32 value; |
|
|
|
pad = tegra_io_pad_find(pmc, id); |
|
if (!pad) |
|
return -ENOENT; |
|
|
|
if (pad->voltage == UINT_MAX) |
|
return -ENOTSUPP; |
|
|
|
mutex_lock(&pmc->powergates_lock); |
|
|
|
if (pmc->soc->has_impl_33v_pwr) { |
|
value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR); |
|
|
|
if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8) |
|
value &= ~BIT(pad->voltage); |
|
else |
|
value |= BIT(pad->voltage); |
|
|
|
tegra_pmc_writel(pmc, value, PMC_IMPL_E_33V_PWR); |
|
} else { |
|
/* write-enable PMC_PWR_DET_VALUE[pad->voltage] */ |
|
value = tegra_pmc_readl(pmc, PMC_PWR_DET); |
|
value |= BIT(pad->voltage); |
|
tegra_pmc_writel(pmc, value, PMC_PWR_DET); |
|
|
|
/* update I/O voltage */ |
|
value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE); |
|
|
|
if (voltage == TEGRA_IO_PAD_VOLTAGE_1V8) |
|
value &= ~BIT(pad->voltage); |
|
else |
|
value |= BIT(pad->voltage); |
|
|
|
tegra_pmc_writel(pmc, value, PMC_PWR_DET_VALUE); |
|
} |
|
|
|
mutex_unlock(&pmc->powergates_lock); |
|
|
|
usleep_range(100, 250); |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_io_pad_get_voltage(struct tegra_pmc *pmc, enum tegra_io_pad id) |
|
{ |
|
const struct tegra_io_pad_soc *pad; |
|
u32 value; |
|
|
|
pad = tegra_io_pad_find(pmc, id); |
|
if (!pad) |
|
return -ENOENT; |
|
|
|
if (pad->voltage == UINT_MAX) |
|
return -ENOTSUPP; |
|
|
|
if (pmc->soc->has_impl_33v_pwr) |
|
value = tegra_pmc_readl(pmc, PMC_IMPL_E_33V_PWR); |
|
else |
|
value = tegra_pmc_readl(pmc, PMC_PWR_DET_VALUE); |
|
|
|
if ((value & BIT(pad->voltage)) == 0) |
|
return TEGRA_IO_PAD_VOLTAGE_1V8; |
|
|
|
return TEGRA_IO_PAD_VOLTAGE_3V3; |
|
} |
|
|
|
/** |
|
* tegra_io_rail_power_on() - enable power to I/O rail |
|
* @id: Tegra I/O pad ID for which to enable power |
|
* |
|
* See also: tegra_io_pad_power_enable() |
|
*/ |
|
int tegra_io_rail_power_on(unsigned int id) |
|
{ |
|
return tegra_io_pad_power_enable(id); |
|
} |
|
EXPORT_SYMBOL(tegra_io_rail_power_on); |
|
|
|
/** |
|
* tegra_io_rail_power_off() - disable power to I/O rail |
|
* @id: Tegra I/O pad ID for which to disable power |
|
* |
|
* See also: tegra_io_pad_power_disable() |
|
*/ |
|
int tegra_io_rail_power_off(unsigned int id) |
|
{ |
|
return tegra_io_pad_power_disable(id); |
|
} |
|
EXPORT_SYMBOL(tegra_io_rail_power_off); |
|
|
|
#ifdef CONFIG_PM_SLEEP |
|
enum tegra_suspend_mode tegra_pmc_get_suspend_mode(void) |
|
{ |
|
return pmc->suspend_mode; |
|
} |
|
|
|
void tegra_pmc_set_suspend_mode(enum tegra_suspend_mode mode) |
|
{ |
|
if (mode < TEGRA_SUSPEND_NONE || mode >= TEGRA_MAX_SUSPEND_MODE) |
|
return; |
|
|
|
pmc->suspend_mode = mode; |
|
} |
|
|
|
void tegra_pmc_enter_suspend_mode(enum tegra_suspend_mode mode) |
|
{ |
|
unsigned long long rate = 0; |
|
u64 ticks; |
|
u32 value; |
|
|
|
switch (mode) { |
|
case TEGRA_SUSPEND_LP1: |
|
rate = 32768; |
|
break; |
|
|
|
case TEGRA_SUSPEND_LP2: |
|
rate = pmc->rate; |
|
break; |
|
|
|
default: |
|
break; |
|
} |
|
|
|
if (WARN_ON_ONCE(rate == 0)) |
|
rate = 100000000; |
|
|
|
ticks = pmc->cpu_good_time * rate + USEC_PER_SEC - 1; |
|
do_div(ticks, USEC_PER_SEC); |
|
tegra_pmc_writel(pmc, ticks, PMC_CPUPWRGOOD_TIMER); |
|
|
|
ticks = pmc->cpu_off_time * rate + USEC_PER_SEC - 1; |
|
do_div(ticks, USEC_PER_SEC); |
|
tegra_pmc_writel(pmc, ticks, PMC_CPUPWROFF_TIMER); |
|
|
|
value = tegra_pmc_readl(pmc, PMC_CNTRL); |
|
value &= ~PMC_CNTRL_SIDE_EFFECT_LP0; |
|
value |= PMC_CNTRL_CPU_PWRREQ_OE; |
|
tegra_pmc_writel(pmc, value, PMC_CNTRL); |
|
} |
|
#endif |
|
|
|
static int tegra_pmc_parse_dt(struct tegra_pmc *pmc, struct device_node *np) |
|
{ |
|
u32 value, values[2]; |
|
|
|
if (of_property_read_u32(np, "nvidia,suspend-mode", &value)) { |
|
} else { |
|
switch (value) { |
|
case 0: |
|
pmc->suspend_mode = TEGRA_SUSPEND_LP0; |
|
break; |
|
|
|
case 1: |
|
pmc->suspend_mode = TEGRA_SUSPEND_LP1; |
|
break; |
|
|
|
case 2: |
|
pmc->suspend_mode = TEGRA_SUSPEND_LP2; |
|
break; |
|
|
|
default: |
|
pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
|
break; |
|
} |
|
} |
|
|
|
pmc->suspend_mode = tegra_pm_validate_suspend_mode(pmc->suspend_mode); |
|
|
|
if (of_property_read_u32(np, "nvidia,cpu-pwr-good-time", &value)) |
|
pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
|
|
|
pmc->cpu_good_time = value; |
|
|
|
if (of_property_read_u32(np, "nvidia,cpu-pwr-off-time", &value)) |
|
pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
|
|
|
pmc->cpu_off_time = value; |
|
|
|
if (of_property_read_u32_array(np, "nvidia,core-pwr-good-time", |
|
values, ARRAY_SIZE(values))) |
|
pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
|
|
|
pmc->core_osc_time = values[0]; |
|
pmc->core_pmu_time = values[1]; |
|
|
|
if (of_property_read_u32(np, "nvidia,core-pwr-off-time", &value)) |
|
pmc->suspend_mode = TEGRA_SUSPEND_NONE; |
|
|
|
pmc->core_off_time = value; |
|
|
|
pmc->corereq_high = of_property_read_bool(np, |
|
"nvidia,core-power-req-active-high"); |
|
|
|
pmc->sysclkreq_high = of_property_read_bool(np, |
|
"nvidia,sys-clock-req-active-high"); |
|
|
|
pmc->combined_req = of_property_read_bool(np, |
|
"nvidia,combined-power-req"); |
|
|
|
pmc->cpu_pwr_good_en = of_property_read_bool(np, |
|
"nvidia,cpu-pwr-good-en"); |
|
|
|
if (of_property_read_u32_array(np, "nvidia,lp0-vec", values, |
|
ARRAY_SIZE(values))) |
|
if (pmc->suspend_mode == TEGRA_SUSPEND_LP0) |
|
pmc->suspend_mode = TEGRA_SUSPEND_LP1; |
|
|
|
pmc->lp0_vec_phys = values[0]; |
|
pmc->lp0_vec_size = values[1]; |
|
|
|
return 0; |
|
} |
|
|
|
static void tegra_pmc_init(struct tegra_pmc *pmc) |
|
{ |
|
if (pmc->soc->init) |
|
pmc->soc->init(pmc); |
|
} |
|
|
|
static void tegra_pmc_init_tsense_reset(struct tegra_pmc *pmc) |
|
{ |
|
static const char disabled[] = "emergency thermal reset disabled"; |
|
u32 pmu_addr, ctrl_id, reg_addr, reg_data, pinmux; |
|
struct device *dev = pmc->dev; |
|
struct device_node *np; |
|
u32 value, checksum; |
|
|
|
if (!pmc->soc->has_tsense_reset) |
|
return; |
|
|
|
np = of_get_child_by_name(pmc->dev->of_node, "i2c-thermtrip"); |
|
if (!np) { |
|
dev_warn(dev, "i2c-thermtrip node not found, %s.\n", disabled); |
|
return; |
|
} |
|
|
|
if (of_property_read_u32(np, "nvidia,i2c-controller-id", &ctrl_id)) { |
|
dev_err(dev, "I2C controller ID missing, %s.\n", disabled); |
|
goto out; |
|
} |
|
|
|
if (of_property_read_u32(np, "nvidia,bus-addr", &pmu_addr)) { |
|
dev_err(dev, "nvidia,bus-addr missing, %s.\n", disabled); |
|
goto out; |
|
} |
|
|
|
if (of_property_read_u32(np, "nvidia,reg-addr", ®_addr)) { |
|
dev_err(dev, "nvidia,reg-addr missing, %s.\n", disabled); |
|
goto out; |
|
} |
|
|
|
if (of_property_read_u32(np, "nvidia,reg-data", ®_data)) { |
|
dev_err(dev, "nvidia,reg-data missing, %s.\n", disabled); |
|
goto out; |
|
} |
|
|
|
if (of_property_read_u32(np, "nvidia,pinmux-id", &pinmux)) |
|
pinmux = 0; |
|
|
|
value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL); |
|
value |= PMC_SENSOR_CTRL_SCRATCH_WRITE; |
|
tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL); |
|
|
|
value = (reg_data << PMC_SCRATCH54_DATA_SHIFT) | |
|
(reg_addr << PMC_SCRATCH54_ADDR_SHIFT); |
|
tegra_pmc_writel(pmc, value, PMC_SCRATCH54); |
|
|
|
value = PMC_SCRATCH55_RESET_TEGRA; |
|
value |= ctrl_id << PMC_SCRATCH55_CNTRL_ID_SHIFT; |
|
value |= pinmux << PMC_SCRATCH55_PINMUX_SHIFT; |
|
value |= pmu_addr << PMC_SCRATCH55_I2CSLV1_SHIFT; |
|
|
|
/* |
|
* Calculate checksum of SCRATCH54, SCRATCH55 fields. Bits 23:16 will |
|
* contain the checksum and are currently zero, so they are not added. |
|
*/ |
|
checksum = reg_addr + reg_data + (value & 0xff) + ((value >> 8) & 0xff) |
|
+ ((value >> 24) & 0xff); |
|
checksum &= 0xff; |
|
checksum = 0x100 - checksum; |
|
|
|
value |= checksum << PMC_SCRATCH55_CHECKSUM_SHIFT; |
|
|
|
tegra_pmc_writel(pmc, value, PMC_SCRATCH55); |
|
|
|
value = tegra_pmc_readl(pmc, PMC_SENSOR_CTRL); |
|
value |= PMC_SENSOR_CTRL_ENABLE_RST; |
|
tegra_pmc_writel(pmc, value, PMC_SENSOR_CTRL); |
|
|
|
dev_info(pmc->dev, "emergency thermal reset enabled\n"); |
|
|
|
out: |
|
of_node_put(np); |
|
} |
|
|
|
static int tegra_io_pad_pinctrl_get_groups_count(struct pinctrl_dev *pctl_dev) |
|
{ |
|
struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
|
|
|
return pmc->soc->num_io_pads; |
|
} |
|
|
|
static const char *tegra_io_pad_pinctrl_get_group_name(struct pinctrl_dev *pctl, |
|
unsigned int group) |
|
{ |
|
struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl); |
|
|
|
return pmc->soc->io_pads[group].name; |
|
} |
|
|
|
static int tegra_io_pad_pinctrl_get_group_pins(struct pinctrl_dev *pctl_dev, |
|
unsigned int group, |
|
const unsigned int **pins, |
|
unsigned int *num_pins) |
|
{ |
|
struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
|
|
|
*pins = &pmc->soc->io_pads[group].id; |
|
*num_pins = 1; |
|
|
|
return 0; |
|
} |
|
|
|
static const struct pinctrl_ops tegra_io_pad_pinctrl_ops = { |
|
.get_groups_count = tegra_io_pad_pinctrl_get_groups_count, |
|
.get_group_name = tegra_io_pad_pinctrl_get_group_name, |
|
.get_group_pins = tegra_io_pad_pinctrl_get_group_pins, |
|
.dt_node_to_map = pinconf_generic_dt_node_to_map_pin, |
|
.dt_free_map = pinconf_generic_dt_free_map, |
|
}; |
|
|
|
static int tegra_io_pad_pinconf_get(struct pinctrl_dev *pctl_dev, |
|
unsigned int pin, unsigned long *config) |
|
{ |
|
enum pin_config_param param = pinconf_to_config_param(*config); |
|
struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
|
const struct tegra_io_pad_soc *pad; |
|
int ret; |
|
u32 arg; |
|
|
|
pad = tegra_io_pad_find(pmc, pin); |
|
if (!pad) |
|
return -EINVAL; |
|
|
|
switch (param) { |
|
case PIN_CONFIG_POWER_SOURCE: |
|
ret = tegra_io_pad_get_voltage(pmc, pad->id); |
|
if (ret < 0) |
|
return ret; |
|
|
|
arg = ret; |
|
break; |
|
|
|
case PIN_CONFIG_LOW_POWER_MODE: |
|
ret = tegra_io_pad_is_powered(pmc, pad->id); |
|
if (ret < 0) |
|
return ret; |
|
|
|
arg = !ret; |
|
break; |
|
|
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
*config = pinconf_to_config_packed(param, arg); |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_io_pad_pinconf_set(struct pinctrl_dev *pctl_dev, |
|
unsigned int pin, unsigned long *configs, |
|
unsigned int num_configs) |
|
{ |
|
struct tegra_pmc *pmc = pinctrl_dev_get_drvdata(pctl_dev); |
|
const struct tegra_io_pad_soc *pad; |
|
enum pin_config_param param; |
|
unsigned int i; |
|
int err; |
|
u32 arg; |
|
|
|
pad = tegra_io_pad_find(pmc, pin); |
|
if (!pad) |
|
return -EINVAL; |
|
|
|
for (i = 0; i < num_configs; ++i) { |
|
param = pinconf_to_config_param(configs[i]); |
|
arg = pinconf_to_config_argument(configs[i]); |
|
|
|
switch (param) { |
|
case PIN_CONFIG_LOW_POWER_MODE: |
|
if (arg) |
|
err = tegra_io_pad_power_disable(pad->id); |
|
else |
|
err = tegra_io_pad_power_enable(pad->id); |
|
if (err) |
|
return err; |
|
break; |
|
case PIN_CONFIG_POWER_SOURCE: |
|
if (arg != TEGRA_IO_PAD_VOLTAGE_1V8 && |
|
arg != TEGRA_IO_PAD_VOLTAGE_3V3) |
|
return -EINVAL; |
|
err = tegra_io_pad_set_voltage(pmc, pad->id, arg); |
|
if (err) |
|
return err; |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static const struct pinconf_ops tegra_io_pad_pinconf_ops = { |
|
.pin_config_get = tegra_io_pad_pinconf_get, |
|
.pin_config_set = tegra_io_pad_pinconf_set, |
|
.is_generic = true, |
|
}; |
|
|
|
static struct pinctrl_desc tegra_pmc_pctl_desc = { |
|
.pctlops = &tegra_io_pad_pinctrl_ops, |
|
.confops = &tegra_io_pad_pinconf_ops, |
|
}; |
|
|
|
static int tegra_pmc_pinctrl_init(struct tegra_pmc *pmc) |
|
{ |
|
int err; |
|
|
|
if (!pmc->soc->num_pin_descs) |
|
return 0; |
|
|
|
tegra_pmc_pctl_desc.name = dev_name(pmc->dev); |
|
tegra_pmc_pctl_desc.pins = pmc->soc->pin_descs; |
|
tegra_pmc_pctl_desc.npins = pmc->soc->num_pin_descs; |
|
|
|
pmc->pctl_dev = devm_pinctrl_register(pmc->dev, &tegra_pmc_pctl_desc, |
|
pmc); |
|
if (IS_ERR(pmc->pctl_dev)) { |
|
err = PTR_ERR(pmc->pctl_dev); |
|
dev_err(pmc->dev, "failed to register pin controller: %d\n", |
|
err); |
|
return err; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static ssize_t reset_reason_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
u32 value; |
|
|
|
value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status); |
|
value &= pmc->soc->regs->rst_source_mask; |
|
value >>= pmc->soc->regs->rst_source_shift; |
|
|
|
if (WARN_ON(value >= pmc->soc->num_reset_sources)) |
|
return sprintf(buf, "%s\n", "UNKNOWN"); |
|
|
|
return sprintf(buf, "%s\n", pmc->soc->reset_sources[value]); |
|
} |
|
|
|
static DEVICE_ATTR_RO(reset_reason); |
|
|
|
static ssize_t reset_level_show(struct device *dev, |
|
struct device_attribute *attr, char *buf) |
|
{ |
|
u32 value; |
|
|
|
value = tegra_pmc_readl(pmc, pmc->soc->regs->rst_status); |
|
value &= pmc->soc->regs->rst_level_mask; |
|
value >>= pmc->soc->regs->rst_level_shift; |
|
|
|
if (WARN_ON(value >= pmc->soc->num_reset_levels)) |
|
return sprintf(buf, "%s\n", "UNKNOWN"); |
|
|
|
return sprintf(buf, "%s\n", pmc->soc->reset_levels[value]); |
|
} |
|
|
|
static DEVICE_ATTR_RO(reset_level); |
|
|
|
static void tegra_pmc_reset_sysfs_init(struct tegra_pmc *pmc) |
|
{ |
|
struct device *dev = pmc->dev; |
|
int err = 0; |
|
|
|
if (pmc->soc->reset_sources) { |
|
err = device_create_file(dev, &dev_attr_reset_reason); |
|
if (err < 0) |
|
dev_warn(dev, |
|
"failed to create attr \"reset_reason\": %d\n", |
|
err); |
|
} |
|
|
|
if (pmc->soc->reset_levels) { |
|
err = device_create_file(dev, &dev_attr_reset_level); |
|
if (err < 0) |
|
dev_warn(dev, |
|
"failed to create attr \"reset_level\": %d\n", |
|
err); |
|
} |
|
} |
|
|
|
static int tegra_pmc_irq_translate(struct irq_domain *domain, |
|
struct irq_fwspec *fwspec, |
|
unsigned long *hwirq, |
|
unsigned int *type) |
|
{ |
|
if (WARN_ON(fwspec->param_count < 2)) |
|
return -EINVAL; |
|
|
|
*hwirq = fwspec->param[0]; |
|
*type = fwspec->param[1]; |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_pmc_irq_alloc(struct irq_domain *domain, unsigned int virq, |
|
unsigned int num_irqs, void *data) |
|
{ |
|
struct tegra_pmc *pmc = domain->host_data; |
|
const struct tegra_pmc_soc *soc = pmc->soc; |
|
struct irq_fwspec *fwspec = data; |
|
unsigned int i; |
|
int err = 0; |
|
|
|
if (WARN_ON(num_irqs > 1)) |
|
return -EINVAL; |
|
|
|
for (i = 0; i < soc->num_wake_events; i++) { |
|
const struct tegra_wake_event *event = &soc->wake_events[i]; |
|
|
|
if (fwspec->param_count == 2) { |
|
struct irq_fwspec spec; |
|
|
|
if (event->id != fwspec->param[0]) |
|
continue; |
|
|
|
err = irq_domain_set_hwirq_and_chip(domain, virq, |
|
event->id, |
|
&pmc->irq, pmc); |
|
if (err < 0) |
|
break; |
|
|
|
spec.fwnode = &pmc->dev->of_node->fwnode; |
|
spec.param_count = 3; |
|
spec.param[0] = GIC_SPI; |
|
spec.param[1] = event->irq; |
|
spec.param[2] = fwspec->param[1]; |
|
|
|
err = irq_domain_alloc_irqs_parent(domain, virq, |
|
num_irqs, &spec); |
|
|
|
break; |
|
} |
|
|
|
if (fwspec->param_count == 3) { |
|
if (event->gpio.instance != fwspec->param[0] || |
|
event->gpio.pin != fwspec->param[1]) |
|
continue; |
|
|
|
err = irq_domain_set_hwirq_and_chip(domain, virq, |
|
event->id, |
|
&pmc->irq, pmc); |
|
|
|
/* GPIO hierarchies stop at the PMC level */ |
|
if (!err && domain->parent) |
|
err = irq_domain_disconnect_hierarchy(domain->parent, |
|
virq); |
|
break; |
|
} |
|
} |
|
|
|
/* If there is no wake-up event, there is no PMC mapping */ |
|
if (i == soc->num_wake_events) |
|
err = irq_domain_disconnect_hierarchy(domain, virq); |
|
|
|
return err; |
|
} |
|
|
|
static const struct irq_domain_ops tegra_pmc_irq_domain_ops = { |
|
.translate = tegra_pmc_irq_translate, |
|
.alloc = tegra_pmc_irq_alloc, |
|
}; |
|
|
|
static int tegra210_pmc_irq_set_wake(struct irq_data *data, unsigned int on) |
|
{ |
|
struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
|
unsigned int offset, bit; |
|
u32 value; |
|
|
|
offset = data->hwirq / 32; |
|
bit = data->hwirq % 32; |
|
|
|
/* clear wake status */ |
|
tegra_pmc_writel(pmc, 0, PMC_SW_WAKE_STATUS); |
|
tegra_pmc_writel(pmc, 0, PMC_SW_WAKE2_STATUS); |
|
|
|
tegra_pmc_writel(pmc, 0, PMC_WAKE_STATUS); |
|
tegra_pmc_writel(pmc, 0, PMC_WAKE2_STATUS); |
|
|
|
/* enable PMC wake */ |
|
if (data->hwirq >= 32) |
|
offset = PMC_WAKE2_MASK; |
|
else |
|
offset = PMC_WAKE_MASK; |
|
|
|
value = tegra_pmc_readl(pmc, offset); |
|
|
|
if (on) |
|
value |= BIT(bit); |
|
else |
|
value &= ~BIT(bit); |
|
|
|
tegra_pmc_writel(pmc, value, offset); |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra210_pmc_irq_set_type(struct irq_data *data, unsigned int type) |
|
{ |
|
struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
|
unsigned int offset, bit; |
|
u32 value; |
|
|
|
offset = data->hwirq / 32; |
|
bit = data->hwirq % 32; |
|
|
|
if (data->hwirq >= 32) |
|
offset = PMC_WAKE2_LEVEL; |
|
else |
|
offset = PMC_WAKE_LEVEL; |
|
|
|
value = tegra_pmc_readl(pmc, offset); |
|
|
|
switch (type) { |
|
case IRQ_TYPE_EDGE_RISING: |
|
case IRQ_TYPE_LEVEL_HIGH: |
|
value |= BIT(bit); |
|
break; |
|
|
|
case IRQ_TYPE_EDGE_FALLING: |
|
case IRQ_TYPE_LEVEL_LOW: |
|
value &= ~BIT(bit); |
|
break; |
|
|
|
case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING: |
|
value ^= BIT(bit); |
|
break; |
|
|
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
tegra_pmc_writel(pmc, value, offset); |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra186_pmc_irq_set_wake(struct irq_data *data, unsigned int on) |
|
{ |
|
struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
|
unsigned int offset, bit; |
|
u32 value; |
|
|
|
offset = data->hwirq / 32; |
|
bit = data->hwirq % 32; |
|
|
|
/* clear wake status */ |
|
writel(0x1, pmc->wake + WAKE_AOWAKE_STATUS_W(data->hwirq)); |
|
|
|
/* route wake to tier 2 */ |
|
value = readl(pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset)); |
|
|
|
if (!on) |
|
value &= ~(1 << bit); |
|
else |
|
value |= 1 << bit; |
|
|
|
writel(value, pmc->wake + WAKE_AOWAKE_TIER2_ROUTING(offset)); |
|
|
|
/* enable wakeup event */ |
|
writel(!!on, pmc->wake + WAKE_AOWAKE_MASK_W(data->hwirq)); |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra186_pmc_irq_set_type(struct irq_data *data, unsigned int type) |
|
{ |
|
struct tegra_pmc *pmc = irq_data_get_irq_chip_data(data); |
|
u32 value; |
|
|
|
value = readl(pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq)); |
|
|
|
switch (type) { |
|
case IRQ_TYPE_EDGE_RISING: |
|
case IRQ_TYPE_LEVEL_HIGH: |
|
value |= WAKE_AOWAKE_CNTRL_LEVEL; |
|
break; |
|
|
|
case IRQ_TYPE_EDGE_FALLING: |
|
case IRQ_TYPE_LEVEL_LOW: |
|
value &= ~WAKE_AOWAKE_CNTRL_LEVEL; |
|
break; |
|
|
|
case IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING: |
|
value ^= WAKE_AOWAKE_CNTRL_LEVEL; |
|
break; |
|
|
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
writel(value, pmc->wake + WAKE_AOWAKE_CNTRL(data->hwirq)); |
|
|
|
return 0; |
|
} |
|
|
|
static void tegra_irq_mask_parent(struct irq_data *data) |
|
{ |
|
if (data->parent_data) |
|
irq_chip_mask_parent(data); |
|
} |
|
|
|
static void tegra_irq_unmask_parent(struct irq_data *data) |
|
{ |
|
if (data->parent_data) |
|
irq_chip_unmask_parent(data); |
|
} |
|
|
|
static void tegra_irq_eoi_parent(struct irq_data *data) |
|
{ |
|
if (data->parent_data) |
|
irq_chip_eoi_parent(data); |
|
} |
|
|
|
static int tegra_irq_set_affinity_parent(struct irq_data *data, |
|
const struct cpumask *dest, |
|
bool force) |
|
{ |
|
if (data->parent_data) |
|
return irq_chip_set_affinity_parent(data, dest, force); |
|
|
|
return -EINVAL; |
|
} |
|
|
|
static int tegra_pmc_irq_init(struct tegra_pmc *pmc) |
|
{ |
|
struct irq_domain *parent = NULL; |
|
struct device_node *np; |
|
|
|
np = of_irq_find_parent(pmc->dev->of_node); |
|
if (np) { |
|
parent = irq_find_host(np); |
|
of_node_put(np); |
|
} |
|
|
|
if (!parent) |
|
return 0; |
|
|
|
pmc->irq.name = dev_name(pmc->dev); |
|
pmc->irq.irq_mask = tegra_irq_mask_parent; |
|
pmc->irq.irq_unmask = tegra_irq_unmask_parent; |
|
pmc->irq.irq_eoi = tegra_irq_eoi_parent; |
|
pmc->irq.irq_set_affinity = tegra_irq_set_affinity_parent; |
|
pmc->irq.irq_set_type = pmc->soc->irq_set_type; |
|
pmc->irq.irq_set_wake = pmc->soc->irq_set_wake; |
|
|
|
pmc->domain = irq_domain_add_hierarchy(parent, 0, 96, pmc->dev->of_node, |
|
&tegra_pmc_irq_domain_ops, pmc); |
|
if (!pmc->domain) { |
|
dev_err(pmc->dev, "failed to allocate domain\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_pmc_clk_notify_cb(struct notifier_block *nb, |
|
unsigned long action, void *ptr) |
|
{ |
|
struct tegra_pmc *pmc = container_of(nb, struct tegra_pmc, clk_nb); |
|
struct clk_notifier_data *data = ptr; |
|
|
|
switch (action) { |
|
case PRE_RATE_CHANGE: |
|
mutex_lock(&pmc->powergates_lock); |
|
break; |
|
|
|
case POST_RATE_CHANGE: |
|
pmc->rate = data->new_rate; |
|
fallthrough; |
|
|
|
case ABORT_RATE_CHANGE: |
|
mutex_unlock(&pmc->powergates_lock); |
|
break; |
|
|
|
default: |
|
WARN_ON_ONCE(1); |
|
return notifier_from_errno(-EINVAL); |
|
} |
|
|
|
return NOTIFY_OK; |
|
} |
|
|
|
static void pmc_clk_fence_udelay(u32 offset) |
|
{ |
|
tegra_pmc_readl(pmc, offset); |
|
/* pmc clk propagation delay 2 us */ |
|
udelay(2); |
|
} |
|
|
|
static u8 pmc_clk_mux_get_parent(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk *clk = to_pmc_clk(hw); |
|
u32 val; |
|
|
|
val = tegra_pmc_readl(pmc, clk->offs) >> clk->mux_shift; |
|
val &= PMC_CLK_OUT_MUX_MASK; |
|
|
|
return val; |
|
} |
|
|
|
static int pmc_clk_mux_set_parent(struct clk_hw *hw, u8 index) |
|
{ |
|
struct pmc_clk *clk = to_pmc_clk(hw); |
|
u32 val; |
|
|
|
val = tegra_pmc_readl(pmc, clk->offs); |
|
val &= ~(PMC_CLK_OUT_MUX_MASK << clk->mux_shift); |
|
val |= index << clk->mux_shift; |
|
tegra_pmc_writel(pmc, val, clk->offs); |
|
pmc_clk_fence_udelay(clk->offs); |
|
|
|
return 0; |
|
} |
|
|
|
static int pmc_clk_is_enabled(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk *clk = to_pmc_clk(hw); |
|
u32 val; |
|
|
|
val = tegra_pmc_readl(pmc, clk->offs) & BIT(clk->force_en_shift); |
|
|
|
return val ? 1 : 0; |
|
} |
|
|
|
static void pmc_clk_set_state(unsigned long offs, u32 shift, int state) |
|
{ |
|
u32 val; |
|
|
|
val = tegra_pmc_readl(pmc, offs); |
|
val = state ? (val | BIT(shift)) : (val & ~BIT(shift)); |
|
tegra_pmc_writel(pmc, val, offs); |
|
pmc_clk_fence_udelay(offs); |
|
} |
|
|
|
static int pmc_clk_enable(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk *clk = to_pmc_clk(hw); |
|
|
|
pmc_clk_set_state(clk->offs, clk->force_en_shift, 1); |
|
|
|
return 0; |
|
} |
|
|
|
static void pmc_clk_disable(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk *clk = to_pmc_clk(hw); |
|
|
|
pmc_clk_set_state(clk->offs, clk->force_en_shift, 0); |
|
} |
|
|
|
static const struct clk_ops pmc_clk_ops = { |
|
.get_parent = pmc_clk_mux_get_parent, |
|
.set_parent = pmc_clk_mux_set_parent, |
|
.determine_rate = __clk_mux_determine_rate, |
|
.is_enabled = pmc_clk_is_enabled, |
|
.enable = pmc_clk_enable, |
|
.disable = pmc_clk_disable, |
|
}; |
|
|
|
static struct clk * |
|
tegra_pmc_clk_out_register(struct tegra_pmc *pmc, |
|
const struct pmc_clk_init_data *data, |
|
unsigned long offset) |
|
{ |
|
struct clk_init_data init; |
|
struct pmc_clk *pmc_clk; |
|
|
|
pmc_clk = devm_kzalloc(pmc->dev, sizeof(*pmc_clk), GFP_KERNEL); |
|
if (!pmc_clk) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
init.name = data->name; |
|
init.ops = &pmc_clk_ops; |
|
init.parent_names = data->parents; |
|
init.num_parents = data->num_parents; |
|
init.flags = CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT | |
|
CLK_SET_PARENT_GATE; |
|
|
|
pmc_clk->hw.init = &init; |
|
pmc_clk->offs = offset; |
|
pmc_clk->mux_shift = data->mux_shift; |
|
pmc_clk->force_en_shift = data->force_en_shift; |
|
|
|
return clk_register(NULL, &pmc_clk->hw); |
|
} |
|
|
|
static int pmc_clk_gate_is_enabled(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk_gate *gate = to_pmc_clk_gate(hw); |
|
|
|
return tegra_pmc_readl(pmc, gate->offs) & BIT(gate->shift) ? 1 : 0; |
|
} |
|
|
|
static int pmc_clk_gate_enable(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk_gate *gate = to_pmc_clk_gate(hw); |
|
|
|
pmc_clk_set_state(gate->offs, gate->shift, 1); |
|
|
|
return 0; |
|
} |
|
|
|
static void pmc_clk_gate_disable(struct clk_hw *hw) |
|
{ |
|
struct pmc_clk_gate *gate = to_pmc_clk_gate(hw); |
|
|
|
pmc_clk_set_state(gate->offs, gate->shift, 0); |
|
} |
|
|
|
static const struct clk_ops pmc_clk_gate_ops = { |
|
.is_enabled = pmc_clk_gate_is_enabled, |
|
.enable = pmc_clk_gate_enable, |
|
.disable = pmc_clk_gate_disable, |
|
}; |
|
|
|
static struct clk * |
|
tegra_pmc_clk_gate_register(struct tegra_pmc *pmc, const char *name, |
|
const char *parent_name, unsigned long offset, |
|
u32 shift) |
|
{ |
|
struct clk_init_data init; |
|
struct pmc_clk_gate *gate; |
|
|
|
gate = devm_kzalloc(pmc->dev, sizeof(*gate), GFP_KERNEL); |
|
if (!gate) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
init.name = name; |
|
init.ops = &pmc_clk_gate_ops; |
|
init.parent_names = &parent_name; |
|
init.num_parents = 1; |
|
init.flags = 0; |
|
|
|
gate->hw.init = &init; |
|
gate->offs = offset; |
|
gate->shift = shift; |
|
|
|
return clk_register(NULL, &gate->hw); |
|
} |
|
|
|
static void tegra_pmc_clock_register(struct tegra_pmc *pmc, |
|
struct device_node *np) |
|
{ |
|
struct clk *clk; |
|
struct clk_onecell_data *clk_data; |
|
unsigned int num_clks; |
|
int i, err; |
|
|
|
num_clks = pmc->soc->num_pmc_clks; |
|
if (pmc->soc->has_blink_output) |
|
num_clks += 1; |
|
|
|
if (!num_clks) |
|
return; |
|
|
|
clk_data = devm_kmalloc(pmc->dev, sizeof(*clk_data), GFP_KERNEL); |
|
if (!clk_data) |
|
return; |
|
|
|
clk_data->clks = devm_kcalloc(pmc->dev, TEGRA_PMC_CLK_MAX, |
|
sizeof(*clk_data->clks), GFP_KERNEL); |
|
if (!clk_data->clks) |
|
return; |
|
|
|
clk_data->clk_num = TEGRA_PMC_CLK_MAX; |
|
|
|
for (i = 0; i < TEGRA_PMC_CLK_MAX; i++) |
|
clk_data->clks[i] = ERR_PTR(-ENOENT); |
|
|
|
for (i = 0; i < pmc->soc->num_pmc_clks; i++) { |
|
const struct pmc_clk_init_data *data; |
|
|
|
data = pmc->soc->pmc_clks_data + i; |
|
|
|
clk = tegra_pmc_clk_out_register(pmc, data, PMC_CLK_OUT_CNTRL); |
|
if (IS_ERR(clk)) { |
|
dev_warn(pmc->dev, "unable to register clock %s: %d\n", |
|
data->name, PTR_ERR_OR_ZERO(clk)); |
|
return; |
|
} |
|
|
|
err = clk_register_clkdev(clk, data->name, NULL); |
|
if (err) { |
|
dev_warn(pmc->dev, |
|
"unable to register %s clock lookup: %d\n", |
|
data->name, err); |
|
return; |
|
} |
|
|
|
clk_data->clks[data->clk_id] = clk; |
|
} |
|
|
|
if (pmc->soc->has_blink_output) { |
|
tegra_pmc_writel(pmc, 0x0, PMC_BLINK_TIMER); |
|
clk = tegra_pmc_clk_gate_register(pmc, |
|
"pmc_blink_override", |
|
"clk_32k", |
|
PMC_DPD_PADS_ORIDE, |
|
PMC_DPD_PADS_ORIDE_BLINK); |
|
if (IS_ERR(clk)) { |
|
dev_warn(pmc->dev, |
|
"unable to register pmc_blink_override: %d\n", |
|
PTR_ERR_OR_ZERO(clk)); |
|
return; |
|
} |
|
|
|
clk = tegra_pmc_clk_gate_register(pmc, "pmc_blink", |
|
"pmc_blink_override", |
|
PMC_CNTRL, |
|
PMC_CNTRL_BLINK_EN); |
|
if (IS_ERR(clk)) { |
|
dev_warn(pmc->dev, |
|
"unable to register pmc_blink: %d\n", |
|
PTR_ERR_OR_ZERO(clk)); |
|
return; |
|
} |
|
|
|
err = clk_register_clkdev(clk, "pmc_blink", NULL); |
|
if (err) { |
|
dev_warn(pmc->dev, |
|
"unable to register pmc_blink lookup: %d\n", |
|
err); |
|
return; |
|
} |
|
|
|
clk_data->clks[TEGRA_PMC_CLK_BLINK] = clk; |
|
} |
|
|
|
err = of_clk_add_provider(np, of_clk_src_onecell_get, clk_data); |
|
if (err) |
|
dev_warn(pmc->dev, "failed to add pmc clock provider: %d\n", |
|
err); |
|
} |
|
|
|
static int tegra_pmc_probe(struct platform_device *pdev) |
|
{ |
|
void __iomem *base; |
|
struct resource *res; |
|
int err; |
|
|
|
/* |
|
* Early initialisation should have configured an initial |
|
* register mapping and setup the soc data pointer. If these |
|
* are not valid then something went badly wrong! |
|
*/ |
|
if (WARN_ON(!pmc->base || !pmc->soc)) |
|
return -ENODEV; |
|
|
|
err = tegra_pmc_parse_dt(pmc, pdev->dev.of_node); |
|
if (err < 0) |
|
return err; |
|
|
|
/* take over the memory region from the early initialization */ |
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
|
base = devm_ioremap_resource(&pdev->dev, res); |
|
if (IS_ERR(base)) |
|
return PTR_ERR(base); |
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "wake"); |
|
if (res) { |
|
pmc->wake = devm_ioremap_resource(&pdev->dev, res); |
|
if (IS_ERR(pmc->wake)) |
|
return PTR_ERR(pmc->wake); |
|
} else { |
|
pmc->wake = base; |
|
} |
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "aotag"); |
|
if (res) { |
|
pmc->aotag = devm_ioremap_resource(&pdev->dev, res); |
|
if (IS_ERR(pmc->aotag)) |
|
return PTR_ERR(pmc->aotag); |
|
} else { |
|
pmc->aotag = base; |
|
} |
|
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "scratch"); |
|
if (res) { |
|
pmc->scratch = devm_ioremap_resource(&pdev->dev, res); |
|
if (IS_ERR(pmc->scratch)) |
|
return PTR_ERR(pmc->scratch); |
|
} else { |
|
pmc->scratch = base; |
|
} |
|
|
|
pmc->clk = devm_clk_get(&pdev->dev, "pclk"); |
|
if (IS_ERR(pmc->clk)) { |
|
err = PTR_ERR(pmc->clk); |
|
|
|
if (err != -ENOENT) { |
|
dev_err(&pdev->dev, "failed to get pclk: %d\n", err); |
|
return err; |
|
} |
|
|
|
pmc->clk = NULL; |
|
} |
|
|
|
/* |
|
* PCLK clock rate can't be retrieved using CLK API because it |
|
* causes lockup if CPU enters LP2 idle state from some other |
|
* CLK notifier, hence we're caching the rate's value locally. |
|
*/ |
|
if (pmc->clk) { |
|
pmc->clk_nb.notifier_call = tegra_pmc_clk_notify_cb; |
|
err = clk_notifier_register(pmc->clk, &pmc->clk_nb); |
|
if (err) { |
|
dev_err(&pdev->dev, |
|
"failed to register clk notifier\n"); |
|
return err; |
|
} |
|
|
|
pmc->rate = clk_get_rate(pmc->clk); |
|
} |
|
|
|
pmc->dev = &pdev->dev; |
|
|
|
tegra_pmc_init(pmc); |
|
|
|
tegra_pmc_init_tsense_reset(pmc); |
|
|
|
tegra_pmc_reset_sysfs_init(pmc); |
|
|
|
if (IS_ENABLED(CONFIG_DEBUG_FS)) { |
|
err = tegra_powergate_debugfs_init(); |
|
if (err < 0) |
|
goto cleanup_sysfs; |
|
} |
|
|
|
err = register_restart_handler(&tegra_pmc_restart_handler); |
|
if (err) { |
|
dev_err(&pdev->dev, "unable to register restart handler, %d\n", |
|
err); |
|
goto cleanup_debugfs; |
|
} |
|
|
|
err = tegra_pmc_pinctrl_init(pmc); |
|
if (err) |
|
goto cleanup_restart_handler; |
|
|
|
err = tegra_powergate_init(pmc, pdev->dev.of_node); |
|
if (err < 0) |
|
goto cleanup_powergates; |
|
|
|
err = tegra_pmc_irq_init(pmc); |
|
if (err < 0) |
|
goto cleanup_powergates; |
|
|
|
mutex_lock(&pmc->powergates_lock); |
|
iounmap(pmc->base); |
|
pmc->base = base; |
|
mutex_unlock(&pmc->powergates_lock); |
|
|
|
tegra_pmc_clock_register(pmc, pdev->dev.of_node); |
|
platform_set_drvdata(pdev, pmc); |
|
|
|
return 0; |
|
|
|
cleanup_powergates: |
|
tegra_powergate_remove_all(pdev->dev.of_node); |
|
cleanup_restart_handler: |
|
unregister_restart_handler(&tegra_pmc_restart_handler); |
|
cleanup_debugfs: |
|
debugfs_remove(pmc->debugfs); |
|
cleanup_sysfs: |
|
device_remove_file(&pdev->dev, &dev_attr_reset_reason); |
|
device_remove_file(&pdev->dev, &dev_attr_reset_level); |
|
clk_notifier_unregister(pmc->clk, &pmc->clk_nb); |
|
|
|
return err; |
|
} |
|
|
|
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) |
|
static int tegra_pmc_suspend(struct device *dev) |
|
{ |
|
struct tegra_pmc *pmc = dev_get_drvdata(dev); |
|
|
|
tegra_pmc_writel(pmc, virt_to_phys(tegra_resume), PMC_SCRATCH41); |
|
|
|
return 0; |
|
} |
|
|
|
static int tegra_pmc_resume(struct device *dev) |
|
{ |
|
struct tegra_pmc *pmc = dev_get_drvdata(dev); |
|
|
|
tegra_pmc_writel(pmc, 0x0, PMC_SCRATCH41); |
|
|
|
return 0; |
|
} |
|
|
|
static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume); |
|
|
|
#endif |
|
|
|
static const char * const tegra20_powergates[] = { |
|
[TEGRA_POWERGATE_CPU] = "cpu", |
|
[TEGRA_POWERGATE_3D] = "3d", |
|
[TEGRA_POWERGATE_VENC] = "venc", |
|
[TEGRA_POWERGATE_VDEC] = "vdec", |
|
[TEGRA_POWERGATE_PCIE] = "pcie", |
|
[TEGRA_POWERGATE_L2] = "l2", |
|
[TEGRA_POWERGATE_MPE] = "mpe", |
|
}; |
|
|
|
static const struct tegra_pmc_regs tegra20_pmc_regs = { |
|
.scratch0 = 0x50, |
|
.dpd_req = 0x1b8, |
|
.dpd_status = 0x1bc, |
|
.dpd2_req = 0x1c0, |
|
.dpd2_status = 0x1c4, |
|
.rst_status = 0x1b4, |
|
.rst_source_shift = 0x0, |
|
.rst_source_mask = 0x7, |
|
.rst_level_shift = 0x0, |
|
.rst_level_mask = 0x0, |
|
}; |
|
|
|
static void tegra20_pmc_init(struct tegra_pmc *pmc) |
|
{ |
|
u32 value, osc, pmu, off; |
|
|
|
/* Always enable CPU power request */ |
|
value = tegra_pmc_readl(pmc, PMC_CNTRL); |
|
value |= PMC_CNTRL_CPU_PWRREQ_OE; |
|
tegra_pmc_writel(pmc, value, PMC_CNTRL); |
|
|
|
value = tegra_pmc_readl(pmc, PMC_CNTRL); |
|
|
|
if (pmc->sysclkreq_high) |
|
value &= ~PMC_CNTRL_SYSCLK_POLARITY; |
|
else |
|
value |= PMC_CNTRL_SYSCLK_POLARITY; |
|
|
|
if (pmc->corereq_high) |
|
value &= ~PMC_CNTRL_PWRREQ_POLARITY; |
|
else |
|
value |= PMC_CNTRL_PWRREQ_POLARITY; |
|
|
|
/* configure the output polarity while the request is tristated */ |
|
tegra_pmc_writel(pmc, value, PMC_CNTRL); |
|
|
|
/* now enable the request */ |
|
value = tegra_pmc_readl(pmc, PMC_CNTRL); |
|
value |= PMC_CNTRL_SYSCLK_OE; |
|
tegra_pmc_writel(pmc, value, PMC_CNTRL); |
|
|
|
/* program core timings which are applicable only for suspend state */ |
|
if (pmc->suspend_mode != TEGRA_SUSPEND_NONE) { |
|
osc = DIV_ROUND_UP(pmc->core_osc_time * 8192, 1000000); |
|
pmu = DIV_ROUND_UP(pmc->core_pmu_time * 32768, 1000000); |
|
off = DIV_ROUND_UP(pmc->core_off_time * 32768, 1000000); |
|
tegra_pmc_writel(pmc, ((osc << 8) & 0xff00) | (pmu & 0xff), |
|
PMC_COREPWRGOOD_TIMER); |
|
tegra_pmc_writel(pmc, off, PMC_COREPWROFF_TIMER); |
|
} |
|
} |
|
|
|
static void tegra20_pmc_setup_irq_polarity(struct tegra_pmc *pmc, |
|
struct device_node *np, |
|
bool invert) |
|
{ |
|
u32 value; |
|
|
|
value = tegra_pmc_readl(pmc, PMC_CNTRL); |
|
|
|
if (invert) |
|
value |= PMC_CNTRL_INTR_POLARITY; |
|
else |
|
value &= ~PMC_CNTRL_INTR_POLARITY; |
|
|
|
tegra_pmc_writel(pmc, value, PMC_CNTRL); |
|
} |
|
|
|
static const struct tegra_pmc_soc tegra20_pmc_soc = { |
|
.num_powergates = ARRAY_SIZE(tegra20_powergates), |
|
.powergates = tegra20_powergates, |
|
.num_cpu_powergates = 0, |
|
.cpu_powergates = NULL, |
|
.has_tsense_reset = false, |
|
.has_gpu_clamps = false, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = false, |
|
.maybe_tz_only = false, |
|
.num_io_pads = 0, |
|
.io_pads = NULL, |
|
.num_pin_descs = 0, |
|
.pin_descs = NULL, |
|
.regs = &tegra20_pmc_regs, |
|
.init = tegra20_pmc_init, |
|
.setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
|
.powergate_set = tegra20_powergate_set, |
|
.reset_sources = NULL, |
|
.num_reset_sources = 0, |
|
.reset_levels = NULL, |
|
.num_reset_levels = 0, |
|
.pmc_clks_data = NULL, |
|
.num_pmc_clks = 0, |
|
.has_blink_output = true, |
|
}; |
|
|
|
static const char * const tegra30_powergates[] = { |
|
[TEGRA_POWERGATE_CPU] = "cpu0", |
|
[TEGRA_POWERGATE_3D] = "3d0", |
|
[TEGRA_POWERGATE_VENC] = "venc", |
|
[TEGRA_POWERGATE_VDEC] = "vdec", |
|
[TEGRA_POWERGATE_PCIE] = "pcie", |
|
[TEGRA_POWERGATE_L2] = "l2", |
|
[TEGRA_POWERGATE_MPE] = "mpe", |
|
[TEGRA_POWERGATE_HEG] = "heg", |
|
[TEGRA_POWERGATE_SATA] = "sata", |
|
[TEGRA_POWERGATE_CPU1] = "cpu1", |
|
[TEGRA_POWERGATE_CPU2] = "cpu2", |
|
[TEGRA_POWERGATE_CPU3] = "cpu3", |
|
[TEGRA_POWERGATE_CELP] = "celp", |
|
[TEGRA_POWERGATE_3D1] = "3d1", |
|
}; |
|
|
|
static const u8 tegra30_cpu_powergates[] = { |
|
TEGRA_POWERGATE_CPU, |
|
TEGRA_POWERGATE_CPU1, |
|
TEGRA_POWERGATE_CPU2, |
|
TEGRA_POWERGATE_CPU3, |
|
}; |
|
|
|
static const char * const tegra30_reset_sources[] = { |
|
"POWER_ON_RESET", |
|
"WATCHDOG", |
|
"SENSOR", |
|
"SW_MAIN", |
|
"LP0" |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra30_pmc_soc = { |
|
.num_powergates = ARRAY_SIZE(tegra30_powergates), |
|
.powergates = tegra30_powergates, |
|
.num_cpu_powergates = ARRAY_SIZE(tegra30_cpu_powergates), |
|
.cpu_powergates = tegra30_cpu_powergates, |
|
.has_tsense_reset = true, |
|
.has_gpu_clamps = false, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = false, |
|
.maybe_tz_only = false, |
|
.num_io_pads = 0, |
|
.io_pads = NULL, |
|
.num_pin_descs = 0, |
|
.pin_descs = NULL, |
|
.regs = &tegra20_pmc_regs, |
|
.init = tegra20_pmc_init, |
|
.setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
|
.powergate_set = tegra20_powergate_set, |
|
.reset_sources = tegra30_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra30_reset_sources), |
|
.reset_levels = NULL, |
|
.num_reset_levels = 0, |
|
.pmc_clks_data = tegra_pmc_clks_data, |
|
.num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
|
.has_blink_output = true, |
|
}; |
|
|
|
static const char * const tegra114_powergates[] = { |
|
[TEGRA_POWERGATE_CPU] = "crail", |
|
[TEGRA_POWERGATE_3D] = "3d", |
|
[TEGRA_POWERGATE_VENC] = "venc", |
|
[TEGRA_POWERGATE_VDEC] = "vdec", |
|
[TEGRA_POWERGATE_MPE] = "mpe", |
|
[TEGRA_POWERGATE_HEG] = "heg", |
|
[TEGRA_POWERGATE_CPU1] = "cpu1", |
|
[TEGRA_POWERGATE_CPU2] = "cpu2", |
|
[TEGRA_POWERGATE_CPU3] = "cpu3", |
|
[TEGRA_POWERGATE_CELP] = "celp", |
|
[TEGRA_POWERGATE_CPU0] = "cpu0", |
|
[TEGRA_POWERGATE_C0NC] = "c0nc", |
|
[TEGRA_POWERGATE_C1NC] = "c1nc", |
|
[TEGRA_POWERGATE_DIS] = "dis", |
|
[TEGRA_POWERGATE_DISB] = "disb", |
|
[TEGRA_POWERGATE_XUSBA] = "xusba", |
|
[TEGRA_POWERGATE_XUSBB] = "xusbb", |
|
[TEGRA_POWERGATE_XUSBC] = "xusbc", |
|
}; |
|
|
|
static const u8 tegra114_cpu_powergates[] = { |
|
TEGRA_POWERGATE_CPU0, |
|
TEGRA_POWERGATE_CPU1, |
|
TEGRA_POWERGATE_CPU2, |
|
TEGRA_POWERGATE_CPU3, |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra114_pmc_soc = { |
|
.num_powergates = ARRAY_SIZE(tegra114_powergates), |
|
.powergates = tegra114_powergates, |
|
.num_cpu_powergates = ARRAY_SIZE(tegra114_cpu_powergates), |
|
.cpu_powergates = tegra114_cpu_powergates, |
|
.has_tsense_reset = true, |
|
.has_gpu_clamps = false, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = false, |
|
.maybe_tz_only = false, |
|
.num_io_pads = 0, |
|
.io_pads = NULL, |
|
.num_pin_descs = 0, |
|
.pin_descs = NULL, |
|
.regs = &tegra20_pmc_regs, |
|
.init = tegra20_pmc_init, |
|
.setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
|
.powergate_set = tegra114_powergate_set, |
|
.reset_sources = tegra30_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra30_reset_sources), |
|
.reset_levels = NULL, |
|
.num_reset_levels = 0, |
|
.pmc_clks_data = tegra_pmc_clks_data, |
|
.num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
|
.has_blink_output = true, |
|
}; |
|
|
|
static const char * const tegra124_powergates[] = { |
|
[TEGRA_POWERGATE_CPU] = "crail", |
|
[TEGRA_POWERGATE_3D] = "3d", |
|
[TEGRA_POWERGATE_VENC] = "venc", |
|
[TEGRA_POWERGATE_PCIE] = "pcie", |
|
[TEGRA_POWERGATE_VDEC] = "vdec", |
|
[TEGRA_POWERGATE_MPE] = "mpe", |
|
[TEGRA_POWERGATE_HEG] = "heg", |
|
[TEGRA_POWERGATE_SATA] = "sata", |
|
[TEGRA_POWERGATE_CPU1] = "cpu1", |
|
[TEGRA_POWERGATE_CPU2] = "cpu2", |
|
[TEGRA_POWERGATE_CPU3] = "cpu3", |
|
[TEGRA_POWERGATE_CELP] = "celp", |
|
[TEGRA_POWERGATE_CPU0] = "cpu0", |
|
[TEGRA_POWERGATE_C0NC] = "c0nc", |
|
[TEGRA_POWERGATE_C1NC] = "c1nc", |
|
[TEGRA_POWERGATE_SOR] = "sor", |
|
[TEGRA_POWERGATE_DIS] = "dis", |
|
[TEGRA_POWERGATE_DISB] = "disb", |
|
[TEGRA_POWERGATE_XUSBA] = "xusba", |
|
[TEGRA_POWERGATE_XUSBB] = "xusbb", |
|
[TEGRA_POWERGATE_XUSBC] = "xusbc", |
|
[TEGRA_POWERGATE_VIC] = "vic", |
|
[TEGRA_POWERGATE_IRAM] = "iram", |
|
}; |
|
|
|
static const u8 tegra124_cpu_powergates[] = { |
|
TEGRA_POWERGATE_CPU0, |
|
TEGRA_POWERGATE_CPU1, |
|
TEGRA_POWERGATE_CPU2, |
|
TEGRA_POWERGATE_CPU3, |
|
}; |
|
|
|
#define TEGRA_IO_PAD(_id, _dpd, _voltage, _name) \ |
|
((struct tegra_io_pad_soc) { \ |
|
.id = (_id), \ |
|
.dpd = (_dpd), \ |
|
.voltage = (_voltage), \ |
|
.name = (_name), \ |
|
}) |
|
|
|
#define TEGRA_IO_PIN_DESC(_id, _dpd, _voltage, _name) \ |
|
((struct pinctrl_pin_desc) { \ |
|
.number = (_id), \ |
|
.name = (_name) \ |
|
}) |
|
|
|
#define TEGRA124_IO_PAD_TABLE(_pad) \ |
|
/* .id .dpd .voltage .name */ \ |
|
_pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \ |
|
_pad(TEGRA_IO_PAD_BB, 15, UINT_MAX, "bb"), \ |
|
_pad(TEGRA_IO_PAD_CAM, 36, UINT_MAX, "cam"), \ |
|
_pad(TEGRA_IO_PAD_COMP, 22, UINT_MAX, "comp"), \ |
|
_pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
|
_pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csb"), \ |
|
_pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "cse"), \ |
|
_pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \ |
|
_pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \ |
|
_pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \ |
|
_pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \ |
|
_pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \ |
|
_pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \ |
|
_pad(TEGRA_IO_PAD_HV, 38, UINT_MAX, "hv"), \ |
|
_pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \ |
|
_pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
|
_pad(TEGRA_IO_PAD_NAND, 13, UINT_MAX, "nand"), \ |
|
_pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC1, 33, UINT_MAX, "sdmmc1"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC3, 34, UINT_MAX, "sdmmc3"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC4, 35, UINT_MAX, "sdmmc4"), \ |
|
_pad(TEGRA_IO_PAD_SYS_DDC, 58, UINT_MAX, "sys_ddc"), \ |
|
_pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \ |
|
_pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \ |
|
_pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \ |
|
_pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \ |
|
_pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb_bias") |
|
|
|
static const struct tegra_io_pad_soc tegra124_io_pads[] = { |
|
TEGRA124_IO_PAD_TABLE(TEGRA_IO_PAD) |
|
}; |
|
|
|
static const struct pinctrl_pin_desc tegra124_pin_descs[] = { |
|
TEGRA124_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra124_pmc_soc = { |
|
.num_powergates = ARRAY_SIZE(tegra124_powergates), |
|
.powergates = tegra124_powergates, |
|
.num_cpu_powergates = ARRAY_SIZE(tegra124_cpu_powergates), |
|
.cpu_powergates = tegra124_cpu_powergates, |
|
.has_tsense_reset = true, |
|
.has_gpu_clamps = true, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = false, |
|
.maybe_tz_only = false, |
|
.num_io_pads = ARRAY_SIZE(tegra124_io_pads), |
|
.io_pads = tegra124_io_pads, |
|
.num_pin_descs = ARRAY_SIZE(tegra124_pin_descs), |
|
.pin_descs = tegra124_pin_descs, |
|
.regs = &tegra20_pmc_regs, |
|
.init = tegra20_pmc_init, |
|
.setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
|
.powergate_set = tegra114_powergate_set, |
|
.reset_sources = tegra30_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra30_reset_sources), |
|
.reset_levels = NULL, |
|
.num_reset_levels = 0, |
|
.pmc_clks_data = tegra_pmc_clks_data, |
|
.num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
|
.has_blink_output = true, |
|
}; |
|
|
|
static const char * const tegra210_powergates[] = { |
|
[TEGRA_POWERGATE_CPU] = "crail", |
|
[TEGRA_POWERGATE_3D] = "3d", |
|
[TEGRA_POWERGATE_VENC] = "venc", |
|
[TEGRA_POWERGATE_PCIE] = "pcie", |
|
[TEGRA_POWERGATE_MPE] = "mpe", |
|
[TEGRA_POWERGATE_SATA] = "sata", |
|
[TEGRA_POWERGATE_CPU1] = "cpu1", |
|
[TEGRA_POWERGATE_CPU2] = "cpu2", |
|
[TEGRA_POWERGATE_CPU3] = "cpu3", |
|
[TEGRA_POWERGATE_CPU0] = "cpu0", |
|
[TEGRA_POWERGATE_C0NC] = "c0nc", |
|
[TEGRA_POWERGATE_SOR] = "sor", |
|
[TEGRA_POWERGATE_DIS] = "dis", |
|
[TEGRA_POWERGATE_DISB] = "disb", |
|
[TEGRA_POWERGATE_XUSBA] = "xusba", |
|
[TEGRA_POWERGATE_XUSBB] = "xusbb", |
|
[TEGRA_POWERGATE_XUSBC] = "xusbc", |
|
[TEGRA_POWERGATE_VIC] = "vic", |
|
[TEGRA_POWERGATE_IRAM] = "iram", |
|
[TEGRA_POWERGATE_NVDEC] = "nvdec", |
|
[TEGRA_POWERGATE_NVJPG] = "nvjpg", |
|
[TEGRA_POWERGATE_AUD] = "aud", |
|
[TEGRA_POWERGATE_DFD] = "dfd", |
|
[TEGRA_POWERGATE_VE2] = "ve2", |
|
}; |
|
|
|
static const u8 tegra210_cpu_powergates[] = { |
|
TEGRA_POWERGATE_CPU0, |
|
TEGRA_POWERGATE_CPU1, |
|
TEGRA_POWERGATE_CPU2, |
|
TEGRA_POWERGATE_CPU3, |
|
}; |
|
|
|
#define TEGRA210_IO_PAD_TABLE(_pad) \ |
|
/* .id .dpd .voltage .name */ \ |
|
_pad(TEGRA_IO_PAD_AUDIO, 17, 5, "audio"), \ |
|
_pad(TEGRA_IO_PAD_AUDIO_HV, 61, 18, "audio-hv"), \ |
|
_pad(TEGRA_IO_PAD_CAM, 36, 10, "cam"), \ |
|
_pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
|
_pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \ |
|
_pad(TEGRA_IO_PAD_CSIC, 42, UINT_MAX, "csic"), \ |
|
_pad(TEGRA_IO_PAD_CSID, 43, UINT_MAX, "csid"), \ |
|
_pad(TEGRA_IO_PAD_CSIE, 44, UINT_MAX, "csie"), \ |
|
_pad(TEGRA_IO_PAD_CSIF, 45, UINT_MAX, "csif"), \ |
|
_pad(TEGRA_IO_PAD_DBG, 25, 19, "dbg"), \ |
|
_pad(TEGRA_IO_PAD_DEBUG_NONAO, 26, UINT_MAX, "debug-nonao"), \ |
|
_pad(TEGRA_IO_PAD_DMIC, 50, 20, "dmic"), \ |
|
_pad(TEGRA_IO_PAD_DP, 51, UINT_MAX, "dp"), \ |
|
_pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \ |
|
_pad(TEGRA_IO_PAD_DSIB, 39, UINT_MAX, "dsib"), \ |
|
_pad(TEGRA_IO_PAD_DSIC, 40, UINT_MAX, "dsic"), \ |
|
_pad(TEGRA_IO_PAD_DSID, 41, UINT_MAX, "dsid"), \ |
|
_pad(TEGRA_IO_PAD_EMMC, 35, UINT_MAX, "emmc"), \ |
|
_pad(TEGRA_IO_PAD_EMMC2, 37, UINT_MAX, "emmc2"), \ |
|
_pad(TEGRA_IO_PAD_GPIO, 27, 21, "gpio"), \ |
|
_pad(TEGRA_IO_PAD_HDMI, 28, UINT_MAX, "hdmi"), \ |
|
_pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \ |
|
_pad(TEGRA_IO_PAD_LVDS, 57, UINT_MAX, "lvds"), \ |
|
_pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_BIAS, 4, UINT_MAX, "pex-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK1, 5, UINT_MAX, "pex-clk1"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CNTRL, UINT_MAX, 11, "pex-cntrl"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC1, 33, 12, "sdmmc1"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC3, 34, 13, "sdmmc3"), \ |
|
_pad(TEGRA_IO_PAD_SPI, 46, 22, "spi"), \ |
|
_pad(TEGRA_IO_PAD_SPI_HV, 47, 23, "spi-hv"), \ |
|
_pad(TEGRA_IO_PAD_UART, 14, 2, "uart"), \ |
|
_pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \ |
|
_pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \ |
|
_pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \ |
|
_pad(TEGRA_IO_PAD_USB3, 18, UINT_MAX, "usb3"), \ |
|
_pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias") |
|
|
|
static const struct tegra_io_pad_soc tegra210_io_pads[] = { |
|
TEGRA210_IO_PAD_TABLE(TEGRA_IO_PAD) |
|
}; |
|
|
|
static const struct pinctrl_pin_desc tegra210_pin_descs[] = { |
|
TEGRA210_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
|
}; |
|
|
|
static const char * const tegra210_reset_sources[] = { |
|
"POWER_ON_RESET", |
|
"WATCHDOG", |
|
"SENSOR", |
|
"SW_MAIN", |
|
"LP0", |
|
"AOTAG" |
|
}; |
|
|
|
static const struct tegra_wake_event tegra210_wake_events[] = { |
|
TEGRA_WAKE_IRQ("rtc", 16, 2), |
|
TEGRA_WAKE_IRQ("pmu", 51, 86), |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra210_pmc_soc = { |
|
.num_powergates = ARRAY_SIZE(tegra210_powergates), |
|
.powergates = tegra210_powergates, |
|
.num_cpu_powergates = ARRAY_SIZE(tegra210_cpu_powergates), |
|
.cpu_powergates = tegra210_cpu_powergates, |
|
.has_tsense_reset = true, |
|
.has_gpu_clamps = true, |
|
.needs_mbist_war = true, |
|
.has_impl_33v_pwr = false, |
|
.maybe_tz_only = true, |
|
.num_io_pads = ARRAY_SIZE(tegra210_io_pads), |
|
.io_pads = tegra210_io_pads, |
|
.num_pin_descs = ARRAY_SIZE(tegra210_pin_descs), |
|
.pin_descs = tegra210_pin_descs, |
|
.regs = &tegra20_pmc_regs, |
|
.init = tegra20_pmc_init, |
|
.setup_irq_polarity = tegra20_pmc_setup_irq_polarity, |
|
.powergate_set = tegra114_powergate_set, |
|
.irq_set_wake = tegra210_pmc_irq_set_wake, |
|
.irq_set_type = tegra210_pmc_irq_set_type, |
|
.reset_sources = tegra210_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra210_reset_sources), |
|
.reset_levels = NULL, |
|
.num_reset_levels = 0, |
|
.num_wake_events = ARRAY_SIZE(tegra210_wake_events), |
|
.wake_events = tegra210_wake_events, |
|
.pmc_clks_data = tegra_pmc_clks_data, |
|
.num_pmc_clks = ARRAY_SIZE(tegra_pmc_clks_data), |
|
.has_blink_output = true, |
|
}; |
|
|
|
#define TEGRA186_IO_PAD_TABLE(_pad) \ |
|
/* .id .dpd .voltage .name */ \ |
|
_pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
|
_pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \ |
|
_pad(TEGRA_IO_PAD_DSI, 2, UINT_MAX, "dsi"), \ |
|
_pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \ |
|
_pad(TEGRA_IO_PAD_USB0, 9, UINT_MAX, "usb0"), \ |
|
_pad(TEGRA_IO_PAD_USB1, 10, UINT_MAX, "usb1"), \ |
|
_pad(TEGRA_IO_PAD_USB2, 11, UINT_MAX, "usb2"), \ |
|
_pad(TEGRA_IO_PAD_USB_BIAS, 12, UINT_MAX, "usb-bias"), \ |
|
_pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \ |
|
_pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \ |
|
_pad(TEGRA_IO_PAD_HSIC, 19, UINT_MAX, "hsic"), \ |
|
_pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \ |
|
_pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \ |
|
_pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC2_HV, 34, 5, "sdmmc2-hv"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \ |
|
_pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \ |
|
_pad(TEGRA_IO_PAD_DSIB, 40, UINT_MAX, "dsib"), \ |
|
_pad(TEGRA_IO_PAD_DSIC, 41, UINT_MAX, "dsic"), \ |
|
_pad(TEGRA_IO_PAD_DSID, 42, UINT_MAX, "dsid"), \ |
|
_pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \ |
|
_pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \ |
|
_pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \ |
|
_pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \ |
|
_pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \ |
|
_pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \ |
|
_pad(TEGRA_IO_PAD_DMIC_HV, 52, 2, "dmic-hv"), \ |
|
_pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \ |
|
_pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \ |
|
_pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \ |
|
_pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv") |
|
|
|
static const struct tegra_io_pad_soc tegra186_io_pads[] = { |
|
TEGRA186_IO_PAD_TABLE(TEGRA_IO_PAD) |
|
}; |
|
|
|
static const struct pinctrl_pin_desc tegra186_pin_descs[] = { |
|
TEGRA186_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
|
}; |
|
|
|
static const struct tegra_pmc_regs tegra186_pmc_regs = { |
|
.scratch0 = 0x2000, |
|
.dpd_req = 0x74, |
|
.dpd_status = 0x78, |
|
.dpd2_req = 0x7c, |
|
.dpd2_status = 0x80, |
|
.rst_status = 0x70, |
|
.rst_source_shift = 0x2, |
|
.rst_source_mask = 0x3c, |
|
.rst_level_shift = 0x0, |
|
.rst_level_mask = 0x3, |
|
}; |
|
|
|
static void tegra186_pmc_setup_irq_polarity(struct tegra_pmc *pmc, |
|
struct device_node *np, |
|
bool invert) |
|
{ |
|
struct resource regs; |
|
void __iomem *wake; |
|
u32 value; |
|
int index; |
|
|
|
index = of_property_match_string(np, "reg-names", "wake"); |
|
if (index < 0) { |
|
dev_err(pmc->dev, "failed to find PMC wake registers\n"); |
|
return; |
|
} |
|
|
|
of_address_to_resource(np, index, ®s); |
|
|
|
wake = ioremap(regs.start, resource_size(®s)); |
|
if (!wake) { |
|
dev_err(pmc->dev, "failed to map PMC wake registers\n"); |
|
return; |
|
} |
|
|
|
value = readl(wake + WAKE_AOWAKE_CTRL); |
|
|
|
if (invert) |
|
value |= WAKE_AOWAKE_CTRL_INTR_POLARITY; |
|
else |
|
value &= ~WAKE_AOWAKE_CTRL_INTR_POLARITY; |
|
|
|
writel(value, wake + WAKE_AOWAKE_CTRL); |
|
|
|
iounmap(wake); |
|
} |
|
|
|
static const char * const tegra186_reset_sources[] = { |
|
"SYS_RESET", |
|
"AOWDT", |
|
"MCCPLEXWDT", |
|
"BPMPWDT", |
|
"SCEWDT", |
|
"SPEWDT", |
|
"APEWDT", |
|
"BCCPLEXWDT", |
|
"SENSOR", |
|
"AOTAG", |
|
"VFSENSOR", |
|
"SWREST", |
|
"SC7", |
|
"HSM", |
|
"CORESIGHT" |
|
}; |
|
|
|
static const char * const tegra186_reset_levels[] = { |
|
"L0", "L1", "L2", "WARM" |
|
}; |
|
|
|
static const struct tegra_wake_event tegra186_wake_events[] = { |
|
TEGRA_WAKE_IRQ("pmu", 24, 209), |
|
TEGRA_WAKE_GPIO("power", 29, 1, TEGRA186_AON_GPIO(FF, 0)), |
|
TEGRA_WAKE_IRQ("rtc", 73, 10), |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra186_pmc_soc = { |
|
.num_powergates = 0, |
|
.powergates = NULL, |
|
.num_cpu_powergates = 0, |
|
.cpu_powergates = NULL, |
|
.has_tsense_reset = false, |
|
.has_gpu_clamps = false, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = true, |
|
.maybe_tz_only = false, |
|
.num_io_pads = ARRAY_SIZE(tegra186_io_pads), |
|
.io_pads = tegra186_io_pads, |
|
.num_pin_descs = ARRAY_SIZE(tegra186_pin_descs), |
|
.pin_descs = tegra186_pin_descs, |
|
.regs = &tegra186_pmc_regs, |
|
.init = NULL, |
|
.setup_irq_polarity = tegra186_pmc_setup_irq_polarity, |
|
.irq_set_wake = tegra186_pmc_irq_set_wake, |
|
.irq_set_type = tegra186_pmc_irq_set_type, |
|
.reset_sources = tegra186_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra186_reset_sources), |
|
.reset_levels = tegra186_reset_levels, |
|
.num_reset_levels = ARRAY_SIZE(tegra186_reset_levels), |
|
.num_wake_events = ARRAY_SIZE(tegra186_wake_events), |
|
.wake_events = tegra186_wake_events, |
|
.pmc_clks_data = NULL, |
|
.num_pmc_clks = 0, |
|
.has_blink_output = false, |
|
}; |
|
|
|
#define TEGRA194_IO_PAD_TABLE(_pad) \ |
|
/* .id .dpd .voltage .name */ \ |
|
_pad(TEGRA_IO_PAD_CSIA, 0, UINT_MAX, "csia"), \ |
|
_pad(TEGRA_IO_PAD_CSIB, 1, UINT_MAX, "csib"), \ |
|
_pad(TEGRA_IO_PAD_MIPI_BIAS, 3, UINT_MAX, "mipi-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK_BIAS, 4, UINT_MAX, "pex-clk-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK3, 5, UINT_MAX, "pex-clk3"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK2, 6, UINT_MAX, "pex-clk2"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK1, 7, UINT_MAX, "pex-clk1"), \ |
|
_pad(TEGRA_IO_PAD_EQOS, 8, UINT_MAX, "eqos"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK_2_BIAS, 9, UINT_MAX, "pex-clk-2-bias"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CLK_2, 10, UINT_MAX, "pex-clk-2"), \ |
|
_pad(TEGRA_IO_PAD_DAP3, 11, UINT_MAX, "dap3"), \ |
|
_pad(TEGRA_IO_PAD_DAP5, 12, UINT_MAX, "dap5"), \ |
|
_pad(TEGRA_IO_PAD_UART, 14, UINT_MAX, "uart"), \ |
|
_pad(TEGRA_IO_PAD_PWR_CTL, 15, UINT_MAX, "pwr-ctl"), \ |
|
_pad(TEGRA_IO_PAD_SOC_GPIO53, 16, UINT_MAX, "soc-gpio53"), \ |
|
_pad(TEGRA_IO_PAD_AUDIO, 17, UINT_MAX, "audio"), \ |
|
_pad(TEGRA_IO_PAD_GP_PWM2, 18, UINT_MAX, "gp-pwm2"), \ |
|
_pad(TEGRA_IO_PAD_GP_PWM3, 19, UINT_MAX, "gp-pwm3"), \ |
|
_pad(TEGRA_IO_PAD_SOC_GPIO12, 20, UINT_MAX, "soc-gpio12"), \ |
|
_pad(TEGRA_IO_PAD_SOC_GPIO13, 21, UINT_MAX, "soc-gpio13"), \ |
|
_pad(TEGRA_IO_PAD_SOC_GPIO10, 22, UINT_MAX, "soc-gpio10"), \ |
|
_pad(TEGRA_IO_PAD_UART4, 23, UINT_MAX, "uart4"), \ |
|
_pad(TEGRA_IO_PAD_UART5, 24, UINT_MAX, "uart5"), \ |
|
_pad(TEGRA_IO_PAD_DBG, 25, UINT_MAX, "dbg"), \ |
|
_pad(TEGRA_IO_PAD_HDMI_DP3, 26, UINT_MAX, "hdmi-dp3"), \ |
|
_pad(TEGRA_IO_PAD_HDMI_DP2, 27, UINT_MAX, "hdmi-dp2"), \ |
|
_pad(TEGRA_IO_PAD_HDMI_DP0, 28, UINT_MAX, "hdmi-dp0"), \ |
|
_pad(TEGRA_IO_PAD_HDMI_DP1, 29, UINT_MAX, "hdmi-dp1"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CNTRL, 32, UINT_MAX, "pex-cntrl"), \ |
|
_pad(TEGRA_IO_PAD_PEX_CTL2, 33, UINT_MAX, "pex-ctl2"), \ |
|
_pad(TEGRA_IO_PAD_PEX_L0_RST_N, 34, UINT_MAX, "pex-l0-rst"), \ |
|
_pad(TEGRA_IO_PAD_PEX_L1_RST_N, 35, UINT_MAX, "pex-l1-rst"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC4, 36, UINT_MAX, "sdmmc4"), \ |
|
_pad(TEGRA_IO_PAD_PEX_L5_RST_N, 37, UINT_MAX, "pex-l5-rst"), \ |
|
_pad(TEGRA_IO_PAD_CAM, 38, UINT_MAX, "cam"), \ |
|
_pad(TEGRA_IO_PAD_CSIC, 43, UINT_MAX, "csic"), \ |
|
_pad(TEGRA_IO_PAD_CSID, 44, UINT_MAX, "csid"), \ |
|
_pad(TEGRA_IO_PAD_CSIE, 45, UINT_MAX, "csie"), \ |
|
_pad(TEGRA_IO_PAD_CSIF, 46, UINT_MAX, "csif"), \ |
|
_pad(TEGRA_IO_PAD_SPI, 47, UINT_MAX, "spi"), \ |
|
_pad(TEGRA_IO_PAD_UFS, 49, UINT_MAX, "ufs"), \ |
|
_pad(TEGRA_IO_PAD_CSIG, 50, UINT_MAX, "csig"), \ |
|
_pad(TEGRA_IO_PAD_CSIH, 51, UINT_MAX, "csih"), \ |
|
_pad(TEGRA_IO_PAD_EDP, 53, UINT_MAX, "edp"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC1_HV, 55, 4, "sdmmc1-hv"), \ |
|
_pad(TEGRA_IO_PAD_SDMMC3_HV, 56, 6, "sdmmc3-hv"), \ |
|
_pad(TEGRA_IO_PAD_CONN, 60, UINT_MAX, "conn"), \ |
|
_pad(TEGRA_IO_PAD_AUDIO_HV, 61, 1, "audio-hv"), \ |
|
_pad(TEGRA_IO_PAD_AO_HV, UINT_MAX, 0, "ao-hv") |
|
|
|
static const struct tegra_io_pad_soc tegra194_io_pads[] = { |
|
TEGRA194_IO_PAD_TABLE(TEGRA_IO_PAD) |
|
}; |
|
|
|
static const struct pinctrl_pin_desc tegra194_pin_descs[] = { |
|
TEGRA194_IO_PAD_TABLE(TEGRA_IO_PIN_DESC) |
|
}; |
|
|
|
static const struct tegra_pmc_regs tegra194_pmc_regs = { |
|
.scratch0 = 0x2000, |
|
.dpd_req = 0x74, |
|
.dpd_status = 0x78, |
|
.dpd2_req = 0x7c, |
|
.dpd2_status = 0x80, |
|
.rst_status = 0x70, |
|
.rst_source_shift = 0x2, |
|
.rst_source_mask = 0x7c, |
|
.rst_level_shift = 0x0, |
|
.rst_level_mask = 0x3, |
|
}; |
|
|
|
static const char * const tegra194_reset_sources[] = { |
|
"SYS_RESET_N", |
|
"AOWDT", |
|
"BCCPLEXWDT", |
|
"BPMPWDT", |
|
"SCEWDT", |
|
"SPEWDT", |
|
"APEWDT", |
|
"LCCPLEXWDT", |
|
"SENSOR", |
|
"AOTAG", |
|
"VFSENSOR", |
|
"MAINSWRST", |
|
"SC7", |
|
"HSM", |
|
"CSITE", |
|
"RCEWDT", |
|
"PVA0WDT", |
|
"PVA1WDT", |
|
"L1A_ASYNC", |
|
"BPMPBOOT", |
|
"FUSECRC", |
|
}; |
|
|
|
static const struct tegra_wake_event tegra194_wake_events[] = { |
|
TEGRA_WAKE_IRQ("pmu", 24, 209), |
|
TEGRA_WAKE_GPIO("power", 29, 1, TEGRA194_AON_GPIO(EE, 4)), |
|
TEGRA_WAKE_IRQ("rtc", 73, 10), |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra194_pmc_soc = { |
|
.num_powergates = 0, |
|
.powergates = NULL, |
|
.num_cpu_powergates = 0, |
|
.cpu_powergates = NULL, |
|
.has_tsense_reset = false, |
|
.has_gpu_clamps = false, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = true, |
|
.maybe_tz_only = false, |
|
.num_io_pads = ARRAY_SIZE(tegra194_io_pads), |
|
.io_pads = tegra194_io_pads, |
|
.num_pin_descs = ARRAY_SIZE(tegra194_pin_descs), |
|
.pin_descs = tegra194_pin_descs, |
|
.regs = &tegra194_pmc_regs, |
|
.init = NULL, |
|
.setup_irq_polarity = tegra186_pmc_setup_irq_polarity, |
|
.irq_set_wake = tegra186_pmc_irq_set_wake, |
|
.irq_set_type = tegra186_pmc_irq_set_type, |
|
.reset_sources = tegra194_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra194_reset_sources), |
|
.reset_levels = tegra186_reset_levels, |
|
.num_reset_levels = ARRAY_SIZE(tegra186_reset_levels), |
|
.num_wake_events = ARRAY_SIZE(tegra194_wake_events), |
|
.wake_events = tegra194_wake_events, |
|
.pmc_clks_data = NULL, |
|
.num_pmc_clks = 0, |
|
.has_blink_output = false, |
|
}; |
|
|
|
static const struct tegra_pmc_regs tegra234_pmc_regs = { |
|
.scratch0 = 0x2000, |
|
.dpd_req = 0, |
|
.dpd_status = 0, |
|
.dpd2_req = 0, |
|
.dpd2_status = 0, |
|
.rst_status = 0x70, |
|
.rst_source_shift = 0x2, |
|
.rst_source_mask = 0xfc, |
|
.rst_level_shift = 0x0, |
|
.rst_level_mask = 0x3, |
|
}; |
|
|
|
static const char * const tegra234_reset_sources[] = { |
|
"SYS_RESET_N", |
|
"AOWDT", |
|
"BCCPLEXWDT", |
|
"BPMPWDT", |
|
"SCEWDT", |
|
"SPEWDT", |
|
"APEWDT", |
|
"LCCPLEXWDT", |
|
"SENSOR", |
|
"AOTAG", |
|
"VFSENSOR", |
|
"MAINSWRST", |
|
"SC7", |
|
"HSM", |
|
"CSITE", |
|
"RCEWDT", |
|
"PVA0WDT", |
|
"PVA1WDT", |
|
"L1A_ASYNC", |
|
"BPMPBOOT", |
|
"FUSECRC", |
|
}; |
|
|
|
static const struct tegra_pmc_soc tegra234_pmc_soc = { |
|
.num_powergates = 0, |
|
.powergates = NULL, |
|
.num_cpu_powergates = 0, |
|
.cpu_powergates = NULL, |
|
.has_tsense_reset = false, |
|
.has_gpu_clamps = false, |
|
.needs_mbist_war = false, |
|
.has_impl_33v_pwr = true, |
|
.maybe_tz_only = false, |
|
.num_io_pads = 0, |
|
.io_pads = NULL, |
|
.num_pin_descs = 0, |
|
.pin_descs = NULL, |
|
.regs = &tegra234_pmc_regs, |
|
.init = NULL, |
|
.setup_irq_polarity = tegra186_pmc_setup_irq_polarity, |
|
.irq_set_wake = tegra186_pmc_irq_set_wake, |
|
.irq_set_type = tegra186_pmc_irq_set_type, |
|
.reset_sources = tegra234_reset_sources, |
|
.num_reset_sources = ARRAY_SIZE(tegra234_reset_sources), |
|
.reset_levels = tegra186_reset_levels, |
|
.num_reset_levels = ARRAY_SIZE(tegra186_reset_levels), |
|
.num_wake_events = 0, |
|
.wake_events = NULL, |
|
.pmc_clks_data = NULL, |
|
.num_pmc_clks = 0, |
|
.has_blink_output = false, |
|
}; |
|
|
|
static const struct of_device_id tegra_pmc_match[] = { |
|
{ .compatible = "nvidia,tegra234-pmc", .data = &tegra234_pmc_soc }, |
|
{ .compatible = "nvidia,tegra194-pmc", .data = &tegra194_pmc_soc }, |
|
{ .compatible = "nvidia,tegra186-pmc", .data = &tegra186_pmc_soc }, |
|
{ .compatible = "nvidia,tegra210-pmc", .data = &tegra210_pmc_soc }, |
|
{ .compatible = "nvidia,tegra132-pmc", .data = &tegra124_pmc_soc }, |
|
{ .compatible = "nvidia,tegra124-pmc", .data = &tegra124_pmc_soc }, |
|
{ .compatible = "nvidia,tegra114-pmc", .data = &tegra114_pmc_soc }, |
|
{ .compatible = "nvidia,tegra30-pmc", .data = &tegra30_pmc_soc }, |
|
{ .compatible = "nvidia,tegra20-pmc", .data = &tegra20_pmc_soc }, |
|
{ } |
|
}; |
|
|
|
static struct platform_driver tegra_pmc_driver = { |
|
.driver = { |
|
.name = "tegra-pmc", |
|
.suppress_bind_attrs = true, |
|
.of_match_table = tegra_pmc_match, |
|
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM) |
|
.pm = &tegra_pmc_pm_ops, |
|
#endif |
|
}, |
|
.probe = tegra_pmc_probe, |
|
}; |
|
builtin_platform_driver(tegra_pmc_driver); |
|
|
|
static bool __init tegra_pmc_detect_tz_only(struct tegra_pmc *pmc) |
|
{ |
|
u32 value, saved; |
|
|
|
saved = readl(pmc->base + pmc->soc->regs->scratch0); |
|
value = saved ^ 0xffffffff; |
|
|
|
if (value == 0xffffffff) |
|
value = 0xdeadbeef; |
|
|
|
/* write pattern and read it back */ |
|
writel(value, pmc->base + pmc->soc->regs->scratch0); |
|
value = readl(pmc->base + pmc->soc->regs->scratch0); |
|
|
|
/* if we read all-zeroes, access is restricted to TZ only */ |
|
if (value == 0) { |
|
pr_info("access to PMC is restricted to TZ\n"); |
|
return true; |
|
} |
|
|
|
/* restore original value */ |
|
writel(saved, pmc->base + pmc->soc->regs->scratch0); |
|
|
|
return false; |
|
} |
|
|
|
/* |
|
* Early initialization to allow access to registers in the very early boot |
|
* process. |
|
*/ |
|
static int __init tegra_pmc_early_init(void) |
|
{ |
|
const struct of_device_id *match; |
|
struct device_node *np; |
|
struct resource regs; |
|
unsigned int i; |
|
bool invert; |
|
|
|
mutex_init(&pmc->powergates_lock); |
|
|
|
np = of_find_matching_node_and_match(NULL, tegra_pmc_match, &match); |
|
if (!np) { |
|
/* |
|
* Fall back to legacy initialization for 32-bit ARM only. All |
|
* 64-bit ARM device tree files for Tegra are required to have |
|
* a PMC node. |
|
* |
|
* This is for backwards-compatibility with old device trees |
|
* that didn't contain a PMC node. Note that in this case the |
|
* SoC data can't be matched and therefore powergating is |
|
* disabled. |
|
*/ |
|
if (IS_ENABLED(CONFIG_ARM) && soc_is_tegra()) { |
|
pr_warn("DT node not found, powergating disabled\n"); |
|
|
|
regs.start = 0x7000e400; |
|
regs.end = 0x7000e7ff; |
|
regs.flags = IORESOURCE_MEM; |
|
|
|
pr_warn("Using memory region %pR\n", ®s); |
|
} else { |
|
/* |
|
* At this point we're not running on Tegra, so play |
|
* nice with multi-platform kernels. |
|
*/ |
|
return 0; |
|
} |
|
} else { |
|
/* |
|
* Extract information from the device tree if we've found a |
|
* matching node. |
|
*/ |
|
if (of_address_to_resource(np, 0, ®s) < 0) { |
|
pr_err("failed to get PMC registers\n"); |
|
of_node_put(np); |
|
return -ENXIO; |
|
} |
|
} |
|
|
|
pmc->base = ioremap(regs.start, resource_size(®s)); |
|
if (!pmc->base) { |
|
pr_err("failed to map PMC registers\n"); |
|
of_node_put(np); |
|
return -ENXIO; |
|
} |
|
|
|
if (np) { |
|
pmc->soc = match->data; |
|
|
|
if (pmc->soc->maybe_tz_only) |
|
pmc->tz_only = tegra_pmc_detect_tz_only(pmc); |
|
|
|
/* Create a bitmap of the available and valid partitions */ |
|
for (i = 0; i < pmc->soc->num_powergates; i++) |
|
if (pmc->soc->powergates[i]) |
|
set_bit(i, pmc->powergates_available); |
|
|
|
/* |
|
* Invert the interrupt polarity if a PMC device tree node |
|
* exists and contains the nvidia,invert-interrupt property. |
|
*/ |
|
invert = of_property_read_bool(np, "nvidia,invert-interrupt"); |
|
|
|
pmc->soc->setup_irq_polarity(pmc, np, invert); |
|
|
|
of_node_put(np); |
|
} |
|
|
|
return 0; |
|
} |
|
early_initcall(tegra_pmc_early_init);
|
|
|