92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*
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* Samsung's S3C2416 flattened device tree enabled machine
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*
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* Copyright (c) 2012 Heiko Stuebner <heiko@sntech.de>
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*
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* based on mach-exynos/mach-exynos4-dt.c
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*
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* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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* Copyright (c) 2010-2011 Linaro Ltd.
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* www.linaro.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/clocksource.h>
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#include <linux/irqchip.h>
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#include <linux/of_platform.h>
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#include <linux/serial_core.h>
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#include <asm/mach/arch.h>
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#include <mach/map.h>
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#include <plat/cpu.h>
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#include <plat/pm.h>
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#include <plat/regs-serial.h>
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#include "common.h"
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/*
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* The following lookup table is used to override device names when devices
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* are registered from device tree. This is temporarily added to enable
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* device tree support addition for the S3C2416 architecture.
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*
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* For drivers that require platform data to be provided from the machine
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* file, a platform data pointer can also be supplied along with the
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* devices names. Usually, the platform data elements that cannot be parsed
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* from the device tree by the drivers (example: function pointers) are
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* supplied. But it should be noted that this is a temporary mechanism and
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* at some point, the drivers should be capable of parsing all the platform
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* data from the device tree.
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*/
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static const struct of_dev_auxdata s3c2416_auxdata_lookup[] __initconst = {
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OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART,
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"s3c2440-uart.0", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0x4000,
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"s3c2440-uart.1", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0x8000,
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"s3c2440-uart.2", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-uart", S3C24XX_PA_UART + 0xC000,
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"s3c2440-uart.3", NULL),
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OF_DEV_AUXDATA("samsung,s3c6410-sdhci", S3C_PA_HSMMC0,
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"s3c-sdhci.0", NULL),
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OF_DEV_AUXDATA("samsung,s3c6410-sdhci", S3C_PA_HSMMC1,
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"s3c-sdhci.1", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", S3C_PA_IIC,
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"s3c2440-i2c.0", NULL),
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{},
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};
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static void __init s3c2416_dt_map_io(void)
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{
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s3c24xx_init_io(NULL, 0);
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s3c24xx_init_clocks(12000000);
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}
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static void __init s3c2416_dt_machine_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table,
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s3c2416_auxdata_lookup, NULL);
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s3c_pm_init();
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}
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static char const *s3c2416_dt_compat[] __initdata = {
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"samsung,s3c2416",
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"samsung,s3c2450",
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NULL
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};
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DT_MACHINE_START(S3C2416_DT, "Samsung S3C2416 (Flattened Device Tree)")
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/* Maintainer: Heiko Stuebner <heiko@sntech.de> */
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.dt_compat = s3c2416_dt_compat,
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.map_io = s3c2416_dt_map_io,
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.init_irq = irqchip_init,
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.init_machine = s3c2416_dt_machine_init,
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.init_time = clocksource_of_init,
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.restart = s3c2416_restart,
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MACHINE_END
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