mirror of https://gitee.com/openkylin/linux.git
111 lines
3.9 KiB
C
111 lines
3.9 KiB
C
/*
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* Samsung's EXYNOS4 flattened device tree enabled machine
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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/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 <asm/hardware/gic.h>
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#include <mach/map.h>
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#include <plat/cpu.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 Exynos4 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 exynos4_auxdata_lookup[] __initconst = {
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OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART0,
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"exynos4210-uart.0", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART1,
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"exynos4210-uart.1", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART2,
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"exynos4210-uart.2", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART3,
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"exynos4210-uart.3", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),
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"exynos4-sdhci.0", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),
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"exynos4-sdhci.1", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),
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"exynos4-sdhci.2", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),
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"exynos4-sdhci.3", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
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"s3c2440-i2c.0", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
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"s3c2440-i2c.1", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(2),
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"s3c2440-i2c.2", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(3),
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"s3c2440-i2c.3", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(4),
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"s3c2440-i2c.4", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(5),
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"s3c2440-i2c.5", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(6),
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"s3c2440-i2c.6", NULL),
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OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(7),
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"s3c2440-i2c.7", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI0,
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"exynos4210-spi.0", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI1,
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"exynos4210-spi.1", NULL),
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OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI2,
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"exynos4210-spi.2", NULL),
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OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
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OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
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{},
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};
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static void __init exynos4_dt_map_io(void)
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{
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exynos_init_io(NULL, 0);
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s3c24xx_init_clocks(24000000);
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}
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static void __init exynos4_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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exynos4_auxdata_lookup, NULL);
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}
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static char const *exynos4_dt_compat[] __initdata = {
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"samsung,exynos4210",
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NULL
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};
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DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
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/* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
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.init_irq = exynos4_init_irq,
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.map_io = exynos4_dt_map_io,
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.handle_irq = gic_handle_irq,
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.init_machine = exynos4_dt_machine_init,
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.init_late = exynos_init_late,
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.timer = &exynos4_timer,
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.dt_compat = exynos4_dt_compat,
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.restart = exynos4_restart,
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MACHINE_END
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