diff options
Diffstat (limited to 'arch/arm/mach-s3c24xx/mach-s3c2416-dt.c')
| -rw-r--r-- | arch/arm/mach-s3c24xx/mach-s3c2416-dt.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c b/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c new file mode 100644 index 00000000000..f50454a34f7 --- /dev/null +++ b/arch/arm/mach-s3c24xx/mach-s3c2416-dt.c @@ -0,0 +1,91 @@ +/* + * Samsung's S3C2416 flattened device tree enabled machine + * + * Copyright (c) 2012 Heiko Stuebner <heiko@sntech.de> + * + * based on mach-exynos/mach-exynos4-dt.c + * + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * Copyright (c) 2010-2011 Linaro Ltd. + * www.linaro.org + * + * 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/clocksource.h> +#include <linux/irqchip.h> +#include <linux/of_platform.h> +#include <linux/serial_core.h> + +#include <asm/mach/arch.h> +#include <mach/map.h> + +#include <plat/cpu.h> +#include <plat/pm.h> +#include <plat/regs-serial.h> + +#include "common.h" + +/* + * The following lookup table is used to override device names when devices + * are registered from device tree. This is temporarily added to enable + * device tree support addition for the S3C2416 architecture. + * + * For drivers that require platform data to be provided from the machine + * file, a platform data pointer can also be supplied along with the + * devices names. Usually, the platform data elements that cannot be parsed + * from the device tree by the drivers (example: function pointers) are + * supplied. But it should be noted that this is a temporary mechanism and + * at some point, the drivers should be capable of parsing all the platform + * data from the device tree. + */ +static const struct of_dev_auxdata s3c2416_auxdata_lookup[] __initconst = { + OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART, + "s3c2440-uart.0", NULL), + OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0x4000, + "s3c2440-uart.1", NULL), + OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0x8000, + "s3c2440-uart.2", NULL), + OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0xC000, + "s3c2440-uart.3", NULL), + OF_DEV_AUXDATA("samsung,s3c6410-sdhci", S3C_PA_HSMMC0, + "s3c-sdhci.0", NULL), + OF_DEV_AUXDATA("samsung,s3c6410-sdhci", S3C_PA_HSMMC1, + "s3c-sdhci.1", NULL), + OF_DEV_AUXDATA("samsung,s3c2440-i2c", S3C_PA_IIC, + "s3c2440-i2c.0", NULL), + {}, +}; + +static void __init s3c2416_dt_map_io(void) +{ + s3c24xx_init_io(NULL, 0); + s3c24xx_init_clocks(12000000); +} + +static void __init s3c2416_dt_machine_init(void) +{ + of_platform_populate(NULL, of_default_bus_match_table, + s3c2416_auxdata_lookup, NULL); + + s3c_pm_init(); +} + +static char const *s3c2416_dt_compat[] __initdata = { + "samsung,s3c2416", + "samsung,s3c2450", + NULL +}; + +DT_MACHINE_START(S3C2416_DT, "Samsung S3C2416 (Flattened Device Tree)") + /* Maintainer: Heiko Stuebner <heiko@sntech.de> */ + .dt_compat = s3c2416_dt_compat, + .map_io = s3c2416_dt_map_io, + .init_irq = irqchip_init, + .init_machine = s3c2416_dt_machine_init, + .init_time = clocksource_of_init, + .restart = s3c2416_restart, +MACHINE_END |