arch/arm/mach-omap2/board-apollon.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-apollon.c
   3  *
   4  * Copyright (C) 2005,2006 Samsung Electronics
   5  * Author: Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * Modified from mach-omap2/board-h4.c
   8  *
   9  * Code for apollon OMAP2 board. Should work on many OMAP2 systems where
  10  * the bootloader passes the board-specific data to the kernel.
  11  * Do not put any board specific code to this file; create a new machine
  12  * type if you need custom low-level initializations.
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/kernel.h>
  20 #include <linux/init.h>
  21 #include <linux/platform_device.h>
  22 #include <linux/mtd/mtd.h>
  23 #include <linux/mtd/partitions.h>
  24 #include <linux/mtd/onenand.h>
  25 #include <linux/delay.h>
  26 #include <linux/leds.h>
  27 #include <linux/err.h>
  28 #include <linux/clk.h>
  29
  30 #include <asm/hardware.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/flash.h>
  34
  35 #include <asm/arch/gpio.h>
  36 #include <asm/arch/led.h>
  37 #include <asm/arch/mux.h>
  38 #include <asm/arch/usb.h>
  39 #include <asm/arch/board.h>
  40 #include <asm/arch/common.h>
  41 #include <asm/arch/gpmc.h>
  42 #include "prcm-regs.h"
  43
  44 /* LED & Switch macros */
  45 #define LED0_GPIO13             13
  46 #define LED1_GPIO14             14
  47 #define LED2_GPIO15             15
  48
  49 #define APOLLON_FLASH_CS        0
  50 #define APOLLON_ETH_CS          1
  51
  52 static struct mtd_partition apollon_partitions[] = {
  53         {
  54                 .name           = "X-Loader + U-Boot",
  55                 .offset         = 0,
  56                 .size           = SZ_128K,
  57                 .mask_flags     = MTD_WRITEABLE,
  58         },
  59         {
  60                 .name           = "params",
  61                 .offset         = MTDPART_OFS_APPEND,
  62                 .size           = SZ_128K,
  63         },
  64         {
  65                 .name           = "kernel",
  66                 .offset         = MTDPART_OFS_APPEND,
  67                 .size           = SZ_2M,
  68         },
  69         {
  70                 .name           = "rootfs",
  71                 .offset         = MTDPART_OFS_APPEND,
  72                 .size           = SZ_16M,
  73         },
  74         {
  75                 .name           = "filesystem00",
  76                 .offset         = MTDPART_OFS_APPEND,
  77                 .size           = SZ_32M,
  78         },
  79         {
  80                 .name           = "filesystem01",
  81                 .offset         = MTDPART_OFS_APPEND,
  82                 .size           = MTDPART_SIZ_FULL,
  83         },
  84 };
  85
  86 static struct flash_platform_data apollon_flash_data = {
  87         .parts          = apollon_partitions,
  88         .nr_parts       = ARRAY_SIZE(apollon_partitions),
  89 };
  90
  91 static struct resource apollon_flash_resource[] = {
  92         [0] = {
  93                 .flags          = IORESOURCE_MEM,
  94         },
  95 };
  96
  97 static struct platform_device apollon_onenand_device = {
  98         .name           = "onenand",
  99         .id             = -1,
 100         .dev            = {
 101                 .platform_data  = &apollon_flash_data,
 102         },
 103         .num_resources  = ARRAY_SIZE(apollon_flash_resource),
 104         .resource       = apollon_flash_resource,
 105 };
 106
 107 static void __init apollon_flash_init(void)
 108 {
 109         unsigned long base;
 110
 111         if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
 112                 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
 113                 return;
 114         }
 115         apollon_flash_resource[0].start = base;
 116         apollon_flash_resource[0].end   = base + SZ_128K - 1;
 117 }
 118
 119 static struct resource apollon_smc91x_resources[] = {
 120         [0] = {
 121                 .flags  = IORESOURCE_MEM,
 122         },
 123         [1] = {
 124                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 125                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
 126                 .flags  = IORESOURCE_IRQ,
 127         },
 128 };
 129
 130 static struct platform_device apollon_smc91x_device = {
 131         .name           = "smc91x",
 132         .id             = -1,
 133         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
 134         .resource       = apollon_smc91x_resources,
 135 };
 136
 137 static struct platform_device apollon_lcd_device = {
 138         .name           = "apollon_lcd",
 139         .id             = -1,
 140 };
 141
 142 static struct omap_led_config apollon_led_config[] = {
 143         {
 144                 .cdev   = {
 145                         .name   = "apollon:led0",
 146                 },
 147                 .gpio   = LED0_GPIO13,
 148         },
 149         {
 150                 .cdev   = {
 151                         .name   = "apollon:led1",
 152                 },
 153                 .gpio   = LED1_GPIO14,
 154         },
 155         {
 156                 .cdev   = {
 157                         .name   = "apollon:led2",
 158                 },
 159                 .gpio   = LED2_GPIO15,
 160         },
 161 };
 162
 163 static struct omap_led_platform_data apollon_led_data = {
 164         .nr_leds        = ARRAY_SIZE(apollon_led_config),
 165         .leds           = apollon_led_config,
 166 };
 167
 168 static struct platform_device apollon_led_device = {
 169         .name           = "omap-led",
 170         .id             = -1,
 171         .dev            = {
 172                 .platform_data  = &apollon_led_data,
 173         },
 174 };
 175
 176 static struct platform_device *apollon_devices[] __initdata = {
 177         &apollon_onenand_device,
 178         &apollon_smc91x_device,
 179         &apollon_lcd_device,
 180         &apollon_led_device,
 181 };
 182
 183 static inline void __init apollon_init_smc91x(void)
 184 {
 185         unsigned long base;
 186         unsigned int rate;
 187         struct clk *l3ck;
 188         int eth_cs;
 189
 190         l3ck = clk_get(NULL, "core_l3_ck");
 191         if (IS_ERR(l3ck))
 192                 rate = 100000000;
 193         else
 194                 rate = clk_get_rate(l3ck);
 195
 196         eth_cs = APOLLON_ETH_CS;
 197
 198         /* Make sure CS1 timings are correct */
 199         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 200
 201         if (rate >= 160000000) {
 202                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 203                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 204                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 205                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 206                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 207         } else if (rate >= 130000000) {
 208                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 209                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 210                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 211                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 212                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 213         } else {/* rate = 100000000 */
 214                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 216                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 219         }
 220
 221         if (gpmc_cs_request(eth_cs, SZ_16M, &base) < 0) {
 222                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
 223                 return;
 224         }
 225         apollon_smc91x_resources[0].start = base + 0x300;
 226         apollon_smc91x_resources[0].end   = base + 0x30f;
 227         udelay(100);
 228
 229         omap_cfg_reg(W4__24XX_GPIO74);
 230         if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
 231                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 232                         APOLLON_ETHR_GPIO_IRQ);
 233                 gpmc_cs_free(eth_cs);
 234                 return;
 235         }
 236         omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
 237 }
 238
 239 static void __init omap_apollon_init_irq(void)
 240 {
 241         omap2_init_common_hw();
 242         omap_init_irq();
 243         omap_gpio_init();
 244         apollon_init_smc91x();
 245 }
 246
 247 static struct omap_uart_config apollon_uart_config __initdata = {
 248         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
 249 };
 250
 251 static struct omap_mmc_config apollon_mmc_config __initdata = {
 252         .mmc [0] = {
 253                 .enabled        = 1,
 254                 .wire4          = 1,
 255                 .wp_pin         = -1,
 256                 .power_pin      = -1,
 257         /* Note: If you want to detect card feature, please assign 37 */
 258                 .switch_pin     = -1,
 259         },
 260 };
 261
 262 static struct omap_usb_config apollon_usb_config __initdata = {
 263         .register_dev   = 1,
 264         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
 265
 266         .pins[0]        = 6,
 267 };
 268
 269 static struct omap_lcd_config apollon_lcd_config __initdata = {
 270         .ctrl_name      = "internal",
 271 };
 272
 273 static struct omap_board_config_kernel apollon_config[] = {
 274         { OMAP_TAG_UART,        &apollon_uart_config },
 275         { OMAP_TAG_MMC,         &apollon_mmc_config },
 276         { OMAP_TAG_USB,         &apollon_usb_config },
 277         { OMAP_TAG_LCD,         &apollon_lcd_config },
 278 };
 279
 280 static void __init apollon_led_init(void)
 281 {
 282         /* LED0 - AA10 */
 283         omap_cfg_reg(AA10_242X_GPIO13);
 284         omap_request_gpio(LED0_GPIO13);
 285         omap_set_gpio_direction(LED0_GPIO13, 0);
 286         omap_set_gpio_dataout(LED0_GPIO13, 0);
 287         /* LED1  - AA6 */
 288         omap_cfg_reg(AA6_242X_GPIO14);
 289         omap_request_gpio(LED1_GPIO14);
 290         omap_set_gpio_direction(LED1_GPIO14, 0);
 291         omap_set_gpio_dataout(LED1_GPIO14, 0);
 292         /* LED2  - AA4 */
 293         omap_cfg_reg(AA4_242X_GPIO15);
 294         omap_request_gpio(LED2_GPIO15);
 295         omap_set_gpio_direction(LED2_GPIO15, 0);
 296         omap_set_gpio_dataout(LED2_GPIO15, 0);
 297 }
 298
 299 static void __init apollon_usb_init(void)
 300 {
 301         /* USB device */
 302         /* DEVICE_SUSPEND */
 303         omap_cfg_reg(P21_242X_GPIO12);
 304         omap_request_gpio(12);
 305         omap_set_gpio_direction(12, 0);         /* OUT */
 306         omap_set_gpio_dataout(12, 0);
 307 }
 308
 309 static void __init omap_apollon_init(void)
 310 {
 311         apollon_led_init();
 312         apollon_flash_init();
 313         apollon_usb_init();
 314
 315         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
 316         CONTROL_DEVCONF |= (1 << 24);
 317
 318         /*
 319          * Make sure the serial ports are muxed on at this point.
 320          * You have to mux them off in device drivers later on
 321          * if not needed.
 322          */
 323         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
 324         omap_board_config = apollon_config;
 325         omap_board_config_size = ARRAY_SIZE(apollon_config);
 326         omap_serial_init();
 327 }
 328
 329 static void __init omap_apollon_map_io(void)
 330 {
 331         omap2_map_common_io();
 332 }
 333
 334 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
 335         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
 336         .phys_io        = 0x48000000,
 337         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 338         .boot_params    = 0x80000100,
 339         .map_io         = omap_apollon_map_io,
 340         .init_irq       = omap_apollon_init_irq,
 341         .init_machine   = omap_apollon_init,
 342         .timer          = &omap_timer,
 343 MACHINE_END