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/*
* 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 <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,
.init_machine = exynos5_dt_machine_init,
.init_late = exynos_init_late,
.init_time = exynos4_timer_init,
.dt_compat = exynos5_dt_compat,
.restart = exynos5_restart,
.reserve = exynos5_reserve,
MACHINE_END
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