diff options
| author | Lars Persson <lars.persson@axis.com> | 2016-02-11 19:06:19 +0300 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2016-02-25 00:55:47 +0300 |
| commit | 590b460c3e1399ca50c8f1b23f041e88cf9644d5 (patch) | |
| tree | e2b58dd8b1b83e634481525583aafc3a21f51aa6 /arch/arm/mach-artpec | |
| parent | 6ba1c64cd2de65add25eeb168ac6c497967da9a3 (diff) | |
| download | linux-590b460c3e1399ca50c8f1b23f041e88cf9644d5.tar.xz | |
arm: initial machine port for artpec-6 SoC
Basic machine port for the Artpec-6 SoC from Axis
Communications.
Signed-off-by: Lars Persson <larper@axis.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/arm/mach-artpec')
| -rw-r--r-- | arch/arm/mach-artpec/Kconfig | 20 | ||||
| -rw-r--r-- | arch/arm/mach-artpec/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-artpec/board-artpec6.c | 72 |
3 files changed, 93 insertions, 0 deletions
diff --git a/arch/arm/mach-artpec/Kconfig b/arch/arm/mach-artpec/Kconfig new file mode 100644 index 000000000000..6cbe5a2eabab --- /dev/null +++ b/arch/arm/mach-artpec/Kconfig @@ -0,0 +1,20 @@ +menuconfig ARCH_ARTPEC + bool "Axis Communications ARM based ARTPEC SoCs" + depends on ARCH_MULTI_V7 + +if ARCH_ARTPEC + +config MACH_ARTPEC6 + bool "Axis ARTPEC-6 ARM Cortex A9 Platform" + depends on ARCH_MULTI_V7 + select ARM_AMBA + select ARM_GIC + select ARM_GLOBAL_TIMER + select ARM_PSCI + select HAVE_ARM_ARCH_TIMER + select HAVE_ARM_SCU + select HAVE_ARM_TWD if SMP + help + Support for Axis ARTPEC-6 ARM Cortex A9 Platform + +endif diff --git a/arch/arm/mach-artpec/Makefile b/arch/arm/mach-artpec/Makefile new file mode 100644 index 000000000000..78325f0c859c --- /dev/null +++ b/arch/arm/mach-artpec/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_MACH_ARTPEC6) := board-artpec6.o diff --git a/arch/arm/mach-artpec/board-artpec6.c b/arch/arm/mach-artpec/board-artpec6.c new file mode 100644 index 000000000000..71513df3374e --- /dev/null +++ b/arch/arm/mach-artpec/board-artpec6.c @@ -0,0 +1,72 @@ +/* + * ARTPEC-6 device support. + * + * 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. + */ + +#include <linux/amba/bus.h> +#include <linux/clocksource.h> +#include <linux/dma-mapping.h> +#include <linux/io.h> +#include <linux/irqchip.h> +#include <linux/irqchip/arm-gic.h> +#include <linux/mfd/syscon.h> +#include <linux/of_platform.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/clk-provider.h> +#include <linux/regmap.h> +#include <linux/smp.h> +#include <asm/smp_scu.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/psci.h> +#include <linux/arm-smccc.h> + + +#define ARTPEC6_DMACFG_REGNUM 0x10 +#define ARTPEC6_DMACFG_UARTS_BURST 0xff + +#define SECURE_OP_L2C_WRITEREG 0xb4000001 + +static void __init artpec6_init_machine(void) +{ + struct regmap *regmap; + + regmap = syscon_regmap_lookup_by_compatible("axis,artpec6-syscon"); + + if (!IS_ERR(regmap)) { + /* Use PL011 DMA Burst Request signal instead of DMA + * Single Request + */ + regmap_write(regmap, ARTPEC6_DMACFG_REGNUM, + ARTPEC6_DMACFG_UARTS_BURST); + }; + + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static void artpec6_l2c310_write_sec(unsigned long val, unsigned reg) +{ + struct arm_smccc_res res; + + arm_smccc_smc(SECURE_OP_L2C_WRITEREG, reg, val, 0, + 0, 0, 0, 0, &res); + + WARN_ON(res.a0); +} + +static const char * const artpec6_dt_match[] = { + "axis,artpec6", + NULL +}; + +DT_MACHINE_START(ARTPEC6, "Axis ARTPEC-6 Platform") + .l2c_aux_val = 0x0C000000, + .l2c_aux_mask = 0xF3FFFFFF, + .l2c_write_sec = artpec6_l2c310_write_sec, + .init_machine = artpec6_init_machine, + .dt_compat = artpec6_dt_match, +MACHINE_END |