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66 lines
1.5 KiB
66 lines
1.5 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* ARTPEC-6 device support. |
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*/ |
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#include <linux/amba/bus.h> |
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#include <linux/clocksource.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/io.h> |
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#include <linux/irqchip.h> |
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#include <linux/irqchip/arm-gic.h> |
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#include <linux/mfd/syscon.h> |
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#include <linux/of.h> |
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#include <linux/of_address.h> |
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#include <linux/clk-provider.h> |
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#include <linux/regmap.h> |
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#include <linux/smp.h> |
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#include <asm/smp_scu.h> |
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#include <asm/mach/arch.h> |
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#include <asm/mach/map.h> |
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#include <asm/psci.h> |
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#include <linux/arm-smccc.h> |
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#define ARTPEC6_DMACFG_REGNUM 0x10 |
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#define ARTPEC6_DMACFG_UARTS_BURST 0xff |
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#define SECURE_OP_L2C_WRITEREG 0xb4000001 |
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static void __init artpec6_init_machine(void) |
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{ |
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struct regmap *regmap; |
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regmap = syscon_regmap_lookup_by_compatible("axis,artpec6-syscon"); |
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if (!IS_ERR(regmap)) { |
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/* Use PL011 DMA Burst Request signal instead of DMA |
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* Single Request |
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*/ |
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regmap_write(regmap, ARTPEC6_DMACFG_REGNUM, |
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ARTPEC6_DMACFG_UARTS_BURST); |
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}; |
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} |
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static void artpec6_l2c310_write_sec(unsigned long val, unsigned reg) |
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{ |
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struct arm_smccc_res res; |
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arm_smccc_smc(SECURE_OP_L2C_WRITEREG, reg, val, 0, |
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0, 0, 0, 0, &res); |
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WARN_ON(res.a0); |
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} |
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static const char * const artpec6_dt_match[] = { |
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"axis,artpec6", |
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NULL |
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}; |
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DT_MACHINE_START(ARTPEC6, "Axis ARTPEC-6 Platform") |
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.l2c_aux_val = 0x0C000000, |
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.l2c_aux_mask = 0xF3FFFFFF, |
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.l2c_write_sec = artpec6_l2c310_write_sec, |
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.init_machine = artpec6_init_machine, |
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.dt_compat = artpec6_dt_match, |
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MACHINE_END
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