mach-s3c2416-dt.c
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/*
* 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