arch/arm/mach-exynos/mach-exynos5-dt.c - kernel/msm-4.9 - Gitiles

 /*
  * SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine
  *
  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
  * 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/of_platform.h>
 #include <linux/of_fdt.h>
 #include <linux/serial_core.h>
 #include <linux/memblock.h>
 #include <linux/io.h>

 #include <asm/mach/arch.h>
 #include <asm/hardware/gic.h>
 #include <mach/map.h>
 #include <mach/regs-pmu.h>

 #include <plat/cpu.h>
 #include <plat/regs-serial.h>
 #include <plat/mfc.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 EXYNOS5 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 exynos5250_auxdata_lookup[] __initconst = {
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART0,
 				"exynos4210-uart.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART1,
 				"exynos4210-uart.1", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART2,
 				"exynos4210-uart.2", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART3,
 				"exynos4210-uart.3", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(0),
 				"s3c2440-i2c.0", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
 				"s3c2440-i2c.1", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(2),
 				"s3c2440-i2c.2", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(3),
 				"s3c2440-i2c.3", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(4),
 				"s3c2440-i2c.4", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(5),
 				"s3c2440-i2c.5", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(6),
 				"s3c2440-i2c.6", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(7),
 				"s3c2440-i2c.7", NULL),
 	OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
 				"s3c2440-hdmiphy-i2c", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,
 				"dw_mmc.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI1,
 				"dw_mmc.1", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI2,
 				"dw_mmc.2", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI3,
 				"dw_mmc.3", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI0,
 				"exynos4210-spi.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI1,
 				"exynos4210-spi.1", NULL),
 	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI2,
 				"exynos4210-spi.2", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-sata-ahci", 0x122F0000,
 				"exynos5-sata", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-sata-phy", 0x12170000,
 				"exynos5-sata-phy", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-sata-phy-i2c", 0x121D0000,
 				"exynos5-sata-phy-i2c", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL),
 	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_MDMA1, "dma-pl330.2", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC0,
 				"exynos-gsc.0", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC1,
 				"exynos-gsc.1", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC2,
 				"exynos-gsc.2", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3,
 				"exynos-gsc.3", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-hdmi", 0x14530000,
 				"exynos5-hdmi", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5-mixer", 0x14450000,
 				"exynos5-mixer", NULL),
 	OF_DEV_AUXDATA("samsung,mfc-v6", 0x11000000, "s5p-mfc-v6", NULL),
 	OF_DEV_AUXDATA("samsung,exynos5250-tmu", 0x10060000,
 				"exynos-tmu", NULL),
 	{},
 };

 static const struct of_dev_auxdata exynos5440_auxdata_lookup[] __initconst = {
 	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5440_PA_UART0,
 				"exynos4210-uart.0", NULL),
 	{},
 };

 static void __init exynos5_dt_map_io(void)
 {
 	unsigned long root = of_get_flat_dt_root();

 	exynos_init_io(NULL, 0);

 	if (of_flat_dt_is_compatible(root, "samsung,exynos5250"))
 		s3c24xx_init_clocks(24000000);
 }

 static void __init exynos5_dt_machine_init(void)
 {
 	struct device_node *i2c_np;
 	const char *i2c_compat = "samsung,s3c2440-i2c";
 	unsigned int tmp;

 	/*
 	 * Exynos5's legacy i2c controller and new high speed i2c
 	 * controller have muxed interrupt sources. By default the
 	 * interrupts for 4-channel HS-I2C controller are enabled.
 	 * If node for first four channels of legacy i2c controller
 	 * are available then re-configure the interrupts via the
 	 * system register.
 	 */
 	for_each_compatible_node(i2c_np, NULL, i2c_compat) {
 		if (of_device_is_available(i2c_np)) {
 			if (of_alias_get_id(i2c_np, "i2c") < 4) {
 				tmp = readl(EXYNOS5_SYS_I2C_CFG);
 				writel(tmp & ~(0x1 << of_alias_get_id(i2c_np, "i2c")),
 						EXYNOS5_SYS_I2C_CFG);
 			}
 		}
 	}

 	if (of_machine_is_compatible("samsung,exynos5250"))
 		of_platform_populate(NULL, of_default_bus_match_table,
 				     exynos5250_auxdata_lookup, NULL);
 	else if (of_machine_is_compatible("samsung,exynos5440"))
 		of_platform_populate(NULL, of_default_bus_match_table,
 				     exynos5440_auxdata_lookup, NULL);
 }

 static char const *exynos5_dt_compat[] __initdata = {
 	"samsung,exynos5250",
 	"samsung,exynos5440",
 	NULL
 };

 static void __init exynos5_reserve(void)
 {
 #ifdef CONFIG_S5P_DEV_MFC
 	struct s5p_mfc_dt_meminfo mfc_mem;

 	/* Reserve memory for MFC only if it's available */
 	mfc_mem.compatible = "samsung,mfc-v6";
 	if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
 		s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
 				mfc_mem.lsize);
 #endif
 }

 DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
 	/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
 	.init_irq	= exynos5_init_irq,
 	.smp		= smp_ops(exynos_smp_ops),
 	.map_io		= exynos5_dt_map_io,
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= exynos5_dt_machine_init,
 	.init_late	= exynos_init_late,
 	.timer		= &exynos4_timer,
 	.dt_compat	= exynos5_dt_compat,
 	.restart        = exynos5_restart,
 	.reserve	= exynos5_reserve,
 MACHINE_END
	/*
	* SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine
	*
	* Copyright (c) 2012 Samsung Electronics Co., Ltd.
	* http://www.samsung.com
	*
	* 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/of_platform.h>
	#include <linux/of_fdt.h>
	#include <linux/serial_core.h>
	#include <linux/memblock.h>
	#include <linux/io.h>

	#include <asm/mach/arch.h>
	#include <asm/hardware/gic.h>
	#include <mach/map.h>
	#include <mach/regs-pmu.h>

	#include <plat/cpu.h>
	#include <plat/regs-serial.h>
	#include <plat/mfc.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 EXYNOS5 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 exynos5250_auxdata_lookup[] __initconst = {
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART0,
	"exynos4210-uart.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART1,
	"exynos4210-uart.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART2,
	"exynos4210-uart.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5_PA_UART3,
	"exynos4210-uart.3", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(0),
	"s3c2440-i2c.0", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(1),
	"s3c2440-i2c.1", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(2),
	"s3c2440-i2c.2", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(3),
	"s3c2440-i2c.3", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(4),
	"s3c2440-i2c.4", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(5),
	"s3c2440-i2c.5", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(6),
	"s3c2440-i2c.6", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS5_PA_IIC(7),
	"s3c2440-i2c.7", NULL),
	OF_DEV_AUXDATA("samsung,s3c2440-hdmiphy-i2c", EXYNOS5_PA_IIC(8),
	"s3c2440-hdmiphy-i2c", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI0,
	"dw_mmc.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI1,
	"dw_mmc.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI2,
	"dw_mmc.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-dw-mshc", EXYNOS5_PA_DWMCI3,
	"dw_mmc.3", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI0,
	"exynos4210-spi.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI1,
	"exynos4210-spi.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS5_PA_SPI2,
	"exynos4210-spi.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-sata-ahci", 0x122F0000,
	"exynos5-sata", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-sata-phy", 0x12170000,
	"exynos5-sata-phy", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-sata-phy-i2c", 0x121D0000,
	"exynos5-sata-phy-i2c", NULL),
	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA0, "dma-pl330.0", NULL),
	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_PDMA1, "dma-pl330.1", NULL),
	OF_DEV_AUXDATA("arm,pl330", EXYNOS5_PA_MDMA1, "dma-pl330.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC0,
	"exynos-gsc.0", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC1,
	"exynos-gsc.1", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC2,
	"exynos-gsc.2", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3,
	"exynos-gsc.3", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-hdmi", 0x14530000,
	"exynos5-hdmi", NULL),
	OF_DEV_AUXDATA("samsung,exynos5-mixer", 0x14450000,
	"exynos5-mixer", NULL),
	OF_DEV_AUXDATA("samsung,mfc-v6", 0x11000000, "s5p-mfc-v6", NULL),
	OF_DEV_AUXDATA("samsung,exynos5250-tmu", 0x10060000,
	"exynos-tmu", NULL),
	{},
	};

	static const struct of_dev_auxdata exynos5440_auxdata_lookup[] __initconst = {
	OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS5440_PA_UART0,
	"exynos4210-uart.0", NULL),
	{},
	};

	static void __init exynos5_dt_map_io(void)
	{
	unsigned long root = of_get_flat_dt_root();

	exynos_init_io(NULL, 0);

	if (of_flat_dt_is_compatible(root, "samsung,exynos5250"))
	s3c24xx_init_clocks(24000000);
	}

	static void __init exynos5_dt_machine_init(void)
	{
	struct device_node *i2c_np;
	const char *i2c_compat = "samsung,s3c2440-i2c";
	unsigned int tmp;

	/*
	* Exynos5's legacy i2c controller and new high speed i2c
	* controller have muxed interrupt sources. By default the
	* interrupts for 4-channel HS-I2C controller are enabled.
	* If node for first four channels of legacy i2c controller
	* are available then re-configure the interrupts via the
	* system register.
	*/
	for_each_compatible_node(i2c_np, NULL, i2c_compat) {
	if (of_device_is_available(i2c_np)) {
	if (of_alias_get_id(i2c_np, "i2c") < 4) {
	tmp = readl(EXYNOS5_SYS_I2C_CFG);
	writel(tmp & ~(0x1 << of_alias_get_id(i2c_np, "i2c")),
	EXYNOS5_SYS_I2C_CFG);
	}
	}
	}

	if (of_machine_is_compatible("samsung,exynos5250"))
	of_platform_populate(NULL, of_default_bus_match_table,
	exynos5250_auxdata_lookup, NULL);
	else if (of_machine_is_compatible("samsung,exynos5440"))
	of_platform_populate(NULL, of_default_bus_match_table,
	exynos5440_auxdata_lookup, NULL);
	}

	static char const *exynos5_dt_compat[] __initdata = {
	"samsung,exynos5250",
	"samsung,exynos5440",
	NULL
	};

	static void __init exynos5_reserve(void)
	{
	#ifdef CONFIG_S5P_DEV_MFC
	struct s5p_mfc_dt_meminfo mfc_mem;

	/* Reserve memory for MFC only if it's available */
	mfc_mem.compatible = "samsung,mfc-v6";
	if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
	s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
	mfc_mem.lsize);
	#endif
	}

	DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
	/* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
	.init_irq = exynos5_init_irq,
	.smp = smp_ops(exynos_smp_ops),
	.map_io = exynos5_dt_map_io,
	.handle_irq = gic_handle_irq,
	.init_machine = exynos5_dt_machine_init,
	.init_late = exynos_init_late,
	.timer = &exynos4_timer,
	.dt_compat = exynos5_dt_compat,
	.restart = exynos5_restart,
	.reserve = exynos5_reserve,
	MACHINE_END