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109 lines
2.4 KiB
109 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (C) 2015 Freescale Semiconductor, Inc. |
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*/ |
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#include <linux/irqchip.h> |
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#include <linux/mfd/syscon.h> |
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#include <linux/mfd/syscon/imx7-iomuxc-gpr.h> |
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#include <linux/of_platform.h> |
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#include <linux/phy.h> |
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#include <linux/regmap.h> |
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#include <asm/mach/arch.h> |
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#include <asm/mach/map.h> |
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#include "common.h" |
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static int ar8031_phy_fixup(struct phy_device *dev) |
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{ |
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u16 val; |
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/* Set RGMII IO voltage to 1.8V */ |
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phy_write(dev, 0x1d, 0x1f); |
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phy_write(dev, 0x1e, 0x8); |
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/* disable phy AR8031 SmartEEE function. */ |
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phy_write(dev, 0xd, 0x3); |
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phy_write(dev, 0xe, 0x805d); |
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phy_write(dev, 0xd, 0x4003); |
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val = phy_read(dev, 0xe); |
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val &= ~(0x1 << 8); |
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phy_write(dev, 0xe, val); |
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return 0; |
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} |
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static int bcm54220_phy_fixup(struct phy_device *dev) |
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{ |
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/* enable RXC skew select RGMII copper mode */ |
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phy_write(dev, 0x1e, 0x21); |
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phy_write(dev, 0x1f, 0x7ea8); |
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phy_write(dev, 0x1e, 0x2f); |
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phy_write(dev, 0x1f, 0x71b7); |
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return 0; |
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} |
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#define PHY_ID_AR8031 0x004dd074 |
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#define PHY_ID_BCM54220 0x600d8589 |
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static void __init imx7d_enet_phy_init(void) |
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{ |
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if (IS_BUILTIN(CONFIG_PHYLIB)) { |
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phy_register_fixup_for_uid(PHY_ID_AR8031, 0xffffffff, |
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ar8031_phy_fixup); |
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phy_register_fixup_for_uid(PHY_ID_BCM54220, 0xffffffff, |
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bcm54220_phy_fixup); |
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} |
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} |
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static void __init imx7d_enet_clk_sel(void) |
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{ |
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struct regmap *gpr; |
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gpr = syscon_regmap_lookup_by_compatible("fsl,imx7d-iomuxc-gpr"); |
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if (!IS_ERR(gpr)) { |
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regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_TX_CLK_SEL_MASK, 0); |
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regmap_update_bits(gpr, IOMUXC_GPR1, IMX7D_GPR1_ENET_CLK_DIR_MASK, 0); |
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} else { |
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pr_err("failed to find fsl,imx7d-iomux-gpr regmap\n"); |
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} |
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} |
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static inline void imx7d_enet_init(void) |
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{ |
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imx7d_enet_phy_init(); |
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imx7d_enet_clk_sel(); |
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} |
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static void __init imx7d_init_machine(void) |
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{ |
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imx_anatop_init(); |
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imx7d_enet_init(); |
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} |
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static void __init imx7d_init_late(void) |
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{ |
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if (IS_ENABLED(CONFIG_ARM_IMX_CPUFREQ_DT)) |
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platform_device_register_simple("imx-cpufreq-dt", -1, NULL, 0); |
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} |
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static void __init imx7d_init_irq(void) |
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{ |
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imx_init_revision_from_anatop(); |
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imx_src_init(); |
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irqchip_init(); |
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} |
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static const char *const imx7d_dt_compat[] __initconst = { |
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"fsl,imx7d", |
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"fsl,imx7s", |
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NULL, |
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}; |
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DT_MACHINE_START(IMX7D, "Freescale i.MX7 Dual (Device Tree)") |
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.init_irq = imx7d_init_irq, |
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.init_machine = imx7d_init_machine, |
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.init_late = imx7d_init_late, |
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.dt_compat = imx7d_dt_compat, |
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MACHINE_END
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