arch/arm/mach-exynos/mach-exynos4-dt.c

   1 /*
   2  * Samsung's EXYNOS4 flattened device tree enabled machine
   3  *
   4  * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
   5  *              http://www.samsung.com
   6  * Copyright (c) 2010-2011 Linaro Ltd.
   7  *              www.linaro.org
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12 */
  13
  14 #include <linux/of_platform.h>
  15 #include <linux/serial_core.h>
  16
  17 #include <asm/mach/arch.h>
  18 #include <mach/map.h>
  19
  20 #include <plat/cpu.h>
  21 #include <plat/regs-serial.h>
  22
  23 #include "common.h"
  24
  25 /*
  26  * The following lookup table is used to override device names when devices
  27  * are registered from device tree. This is temporarily added to enable
  28  * device tree support addition for the Exynos4 architecture.
  29  *
  30  * For drivers that require platform data to be provided from the machine
  31  * file, a platform data pointer can also be supplied along with the
  32  * devices names. Usually, the platform data elements that cannot be parsed
  33  * from the device tree by the drivers (example: function pointers) are
  34  * supplied. But it should be noted that this is a temporary mechanism and
  35  * at some point, the drivers should be capable of parsing all the platform
  36  * data from the device tree.
  37  */
  38 static const struct of_dev_auxdata exynos4_auxdata_lookup[] __initconst = {
  39         OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART0,
  40                                 "exynos4210-uart.0", NULL),
  41         OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART1,
  42                                 "exynos4210-uart.1", NULL),
  43         OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART2,
  44                                 "exynos4210-uart.2", NULL),
  45         OF_DEV_AUXDATA("samsung,exynos4210-uart", EXYNOS4_PA_UART3,
  46                                 "exynos4210-uart.3", NULL),
  47         OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(0),
  48                                 "exynos4-sdhci.0", NULL),
  49         OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(1),
  50                                 "exynos4-sdhci.1", NULL),
  51         OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(2),
  52                                 "exynos4-sdhci.2", NULL),
  53         OF_DEV_AUXDATA("samsung,exynos4210-sdhci", EXYNOS4_PA_HSMMC(3),
  54                                 "exynos4-sdhci.3", NULL),
  55         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(0),
  56                                 "s3c2440-i2c.0", NULL),
  57         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(1),
  58                                 "s3c2440-i2c.1", NULL),
  59         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(2),
  60                                 "s3c2440-i2c.2", NULL),
  61         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(3),
  62                                 "s3c2440-i2c.3", NULL),
  63         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(4),
  64                                 "s3c2440-i2c.4", NULL),
  65         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(5),
  66                                 "s3c2440-i2c.5", NULL),
  67         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(6),
  68                                 "s3c2440-i2c.6", NULL),
  69         OF_DEV_AUXDATA("samsung,s3c2440-i2c", EXYNOS4_PA_IIC(7),
  70                                 "s3c2440-i2c.7", NULL),
  71         OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI0,
  72                                 "exynos4210-spi.0", NULL),
  73         OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI1,
  74                                 "exynos4210-spi.1", NULL),
  75         OF_DEV_AUXDATA("samsung,exynos4210-spi", EXYNOS4_PA_SPI2,
  76                                 "exynos4210-spi.2", NULL),
  77         OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA0, "dma-pl330.0", NULL),
  78         OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_PDMA1, "dma-pl330.1", NULL),
  79         OF_DEV_AUXDATA("arm,pl330", EXYNOS4_PA_MDMA1, "dma-pl330.2", NULL),
  80         OF_DEV_AUXDATA("samsung,exynos4210-tmu", EXYNOS4_PA_TMU,
  81                                 "exynos-tmu", NULL),
  82         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x13620000,
  83                         "exynos-sysmmu.0", NULL), /* MFC_L */
  84         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x13630000,
  85                         "exynos-sysmmu.1", NULL), /* MFC_R */
  86         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x13E20000,
  87                         "exynos-sysmmu.2", NULL), /* TV */
  88         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x11A60000,
  89                         "exynos-sysmmu.3", NULL), /* JPEG */
  90         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x12A30000,
  91                         "exynos-sysmmu.4", NULL), /* ROTATOR */
  92         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x11A20000,
  93                         "exynos-sysmmu.5", NULL), /* FIMC0 */
  94         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x11A30000,
  95                         "exynos-sysmmu.6", NULL), /* FIMC1 */
  96         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x11A40000,
  97                         "exynos-sysmmu.7", NULL), /* FIMC2 */
  98         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x11A50000,
  99                         "exynos-sysmmu.8", NULL), /* FIMC3 */
 100         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x12A20000,
 101                         "exynos-sysmmu.9", NULL), /* G2D(4210) */
 102         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x10A40000,
 103                         "exynos-sysmmu.9", NULL), /* G2D(4x12) */
 104         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x11E20000,
 105                         "exynos-sysmmu.10", NULL), /* FIMD0 */
 106         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x12220000,
 107                         "exynos-sysmmu.11", NULL), /* FIMD1(4210) */
 108         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x12260000,
 109                         "exynos-sysmmu.12", NULL), /* IS0(4x12) */
 110         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x122B0000,
 111                         "exynos-sysmmu.13", NULL), /* IS1(4x12) */
 112         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x123B0000,
 113                         "exynos-sysmmu.14", NULL), /* FIMC-LITE0(4x12) */
 114         OF_DEV_AUXDATA("samsung,exynos-sysmmu", 0x123C0000,
 115                         "exynos-sysmmu.15", NULL), /* FIMC-LITE1(4x12) */
 116         {},
 117 };
 118
 119 static void __init exynos4_dt_map_io(void)
 120 {
 121         exynos_init_io(NULL, 0);
 122         s3c24xx_init_clocks(24000000);
 123 }
 124
 125 static void __init exynos4_dt_machine_init(void)
 126 {
 127         of_platform_populate(NULL, of_default_bus_match_table,
 128                                 exynos4_auxdata_lookup, NULL);
 129 }
 130
 131 static char const *exynos4_dt_compat[] __initdata = {
 132         "samsung,exynos4210",
 133         "samsung,exynos4212",
 134         "samsung,exynos4412",
 135         NULL
 136 };
 137
 138 DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
 139         /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
 140         .smp            = smp_ops(exynos_smp_ops),
 141         .init_irq       = exynos4_init_irq,
 142         .map_io         = exynos4_dt_map_io,
 143         .init_machine   = exynos4_dt_machine_init,
 144         .init_late      = exynos_init_late,
 145         .init_time      = exynos4_timer_init,
 146         .dt_compat      = exynos4_dt_compat,
 147         .restart        = exynos4_restart,
 148 MACHINE_END