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d2912cb15b
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
// 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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