arch/arm/mach-omap2/board-omap3beagle.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3beagle.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/io.h>
  22 #include <linux/leds.h>
  23 #include <linux/gpio.h>
  24 #include <linux/input.h>
  25 #include <linux/gpio_keys.h>
  26
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/mtd/nand.h>
  30
  31 #include <linux/regulator/machine.h>
  32 #include <linux/i2c/twl4030.h>
  33
  34 #include <mach/hardware.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/flash.h>
  39
  40 #include <mach/board.h>
  41 #include <mach/usb-musb.h>
  42 #include <mach/usb-ehci.h>
  43 #include <mach/common.h>
  44 #include <mach/gpmc.h>
  45 #include <mach/nand.h>
  46 #include <mach/mux.h>
  47
  48 #include "twl4030-generic-scripts.h"
  49 #include "mmc-twl4030.h"
  50
  51
  52 #define GPMC_CS0_BASE  0x60
  53 #define GPMC_CS_SIZE   0x30
  54
  55 #define NAND_BLOCK_SIZE         SZ_128K
  56
  57 static struct mtd_partition omap3beagle_nand_partitions[] = {
  58         /* All the partition sizes are listed in terms of NAND block size */
  59         {
  60                 .name           = "X-Loader",
  61                 .offset         = 0,
  62                 .size           = 4 * NAND_BLOCK_SIZE,
  63                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  64         },
  65         {
  66                 .name           = "U-Boot",
  67                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  68                 .size           = 15 * NAND_BLOCK_SIZE,
  69                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  70         },
  71         {
  72                 .name           = "U-Boot Env",
  73                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  74                 .size           = 1 * NAND_BLOCK_SIZE,
  75         },
  76         {
  77                 .name           = "Kernel",
  78                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  79                 .size           = 32 * NAND_BLOCK_SIZE,
  80         },
  81         {
  82                 .name           = "File System",
  83                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  84                 .size           = MTDPART_SIZ_FULL,
  85         },
  86 };
  87
  88 static struct omap_nand_platform_data omap3beagle_nand_data = {
  89         .options        = NAND_BUSWIDTH_16,
  90         .parts          = omap3beagle_nand_partitions,
  91         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  92         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  93         .nand_setup     = NULL,
  94         .dev_ready      = NULL,
  95 };
  96
  97 static struct resource omap3beagle_nand_resource = {
  98         .flags          = IORESOURCE_MEM,
  99 };
 100
 101 static struct platform_device omap3beagle_nand_device = {
 102         .name           = "omap2-nand",
 103         .id             = -1,
 104         .dev            = {
 105                 .platform_data  = &omap3beagle_nand_data,
 106         },
 107         .num_resources  = 1,
 108         .resource       = &omap3beagle_nand_resource,
 109 };
 110
 111 #include "sdram-micron-mt46h32m32lf-6.h"
 112
 113 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 114         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 115 };
 116
 117 static struct twl4030_usb_data beagle_usb_data = {
 118         .usb_mode       = T2_USB_MODE_ULPI,
 119 };
 120
 121 static struct twl4030_hsmmc_info mmc[] = {
 122         {
 123                 .mmc            = 1,
 124                 .wires          = 8,
 125                 .gpio_wp        = 29,
 126         },
 127         {}      /* Terminator */
 128 };
 129
 130 static struct gpio_led gpio_leds[];
 131
 132 static int beagle_twl_gpio_setup(struct device *dev,
 133                 unsigned gpio, unsigned ngpio)
 134 {
 135         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 136         omap_cfg_reg(AH8_34XX_GPIO29);
 137         mmc[0].gpio_cd = gpio + 0;
 138         twl4030_mmc_init(mmc);
 139
 140         /* REVISIT: need ehci-omap hooks for external VBUS
 141          * power switch and overcurrent detect
 142          */
 143
 144         gpio_request(gpio + 1, "EHCI_nOC");
 145         gpio_direction_input(gpio + 1);
 146
 147         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 148         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 149         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 150
 151         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 152         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 153
 154         return 0;
 155 }
 156
 157 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 158         .gpio_base      = OMAP_MAX_GPIO_LINES,
 159         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 160         .irq_end        = TWL4030_GPIO_IRQ_END,
 161         .use_leds       = true,
 162         .pullups        = BIT(1),
 163         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 164                                 | BIT(15) | BIT(16) | BIT(17),
 165         .setup          = beagle_twl_gpio_setup,
 166 };
 167
 168 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 169 static struct regulator_init_data beagle_vmmc1 = {
 170         .constraints = {
 171                 .valid_modes_mask = REGULATOR_MODE_NORMAL
 172                                 | REGULATOR_MODE_STANDBY,
 173                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
 174                                 | REGULATOR_CHANGE_MODE
 175                                 | REGULATOR_CHANGE_STATUS,
 176         },
 177 };
 178
 179 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 180 static struct regulator_init_data beagle_vsim = {
 181         .constraints = {
 182                 .valid_modes_mask = REGULATOR_MODE_NORMAL
 183                                 | REGULATOR_MODE_STANDBY,
 184                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
 185                                 | REGULATOR_CHANGE_MODE
 186                                 | REGULATOR_CHANGE_STATUS,
 187         },
 188 };
 189
 190 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 191 static struct regulator_init_data beagle_vdac = {
 192         .constraints = {
 193                 .min_uV                 = 1800000,
 194                 .max_uV                 = 1800000,
 195                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 196                                         | REGULATOR_MODE_STANDBY,
 197                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 198                                         | REGULATOR_CHANGE_STATUS,
 199         },
 200 };
 201
 202 static struct twl4030_platform_data beagle_twldata = {
 203         .irq_base       = TWL4030_IRQ_BASE,
 204         .irq_end        = TWL4030_IRQ_END,
 205
 206         /* platform_data for children goes here */
 207         .usb            = &beagle_usb_data,
 208         .gpio           = &beagle_gpio_data,
 209         .power          = GENERIC3430_T2SCRIPTS_DATA,
 210         .vmmc1          = &beagle_vmmc1,
 211         .vsim           = &beagle_vsim,
 212         .vdac           = &beagle_vdac,
 213 };
 214
 215 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 216         {
 217                 I2C_BOARD_INFO("twl4030", 0x48),
 218                 .flags = I2C_CLIENT_WAKE,
 219                 .irq = INT_34XX_SYS_NIRQ,
 220                 .platform_data = &beagle_twldata,
 221         },
 222 };
 223
 224 static int __init omap3_beagle_i2c_init(void)
 225 {
 226         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 227                         ARRAY_SIZE(beagle_i2c_boardinfo));
 228 #ifdef CONFIG_I2C2_OMAP_BEAGLE
 229         omap_register_i2c_bus(2, 400, NULL, 0);
 230 #endif
 231         omap_register_i2c_bus(3, 400, NULL, 0);
 232         return 0;
 233 }
 234
 235 static void __init omap3_beagle_init_irq(void)
 236 {
 237         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 238         omap_init_irq();
 239         omap_gpio_init();
 240 }
 241
 242 static struct platform_device omap3_beagle_lcd_device = {
 243         .name           = "omap3beagle_lcd",
 244         .id             = -1,
 245 };
 246
 247 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 248         .ctrl_name      = "internal",
 249 };
 250
 251 static struct gpio_led gpio_leds[] = {
 252         {
 253                 .name                   = "beagleboard::usr0",
 254                 .default_trigger        = "heartbeat",
 255                 .gpio                   = 150,
 256         },
 257         {
 258                 .name                   = "beagleboard::usr1",
 259                 .default_trigger        = "mmc0",
 260                 .gpio                   = 149,
 261         },
 262         {
 263                 .name                   = "beagleboard::pmu_stat",
 264                 .gpio                   = -EINVAL,      /* gets replaced */
 265                 .active_low             = true,
 266         },
 267 };
 268
 269 static struct gpio_led_platform_data gpio_led_info = {
 270         .leds           = gpio_leds,
 271         .num_leds       = ARRAY_SIZE(gpio_leds),
 272 };
 273
 274 static struct platform_device leds_gpio = {
 275         .name   = "leds-gpio",
 276         .id     = -1,
 277         .dev    = {
 278                 .platform_data  = &gpio_led_info,
 279         },
 280 };
 281
 282 static struct gpio_keys_button gpio_buttons[] = {
 283         {
 284                 .code                   = BTN_EXTRA,
 285                 .gpio                   = 7,
 286                 .desc                   = "user",
 287                 .wakeup                 = 1,
 288         },
 289 };
 290
 291 static struct gpio_keys_platform_data gpio_key_info = {
 292         .buttons        = gpio_buttons,
 293         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 294 };
 295
 296 static struct platform_device keys_gpio = {
 297         .name   = "gpio-keys",
 298         .id     = -1,
 299         .dev    = {
 300                 .platform_data  = &gpio_key_info,
 301         },
 302 };
 303
 304 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 305         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 306         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 307 };
 308
 309 static struct platform_device *omap3_beagle_devices[] __initdata = {
 310         &omap3_beagle_lcd_device,
 311         &leds_gpio,
 312         &keys_gpio,
 313 };
 314
 315 static void __init omap3beagle_flash_init(void)
 316 {
 317         u8 cs = 0;
 318         u8 nandcs = GPMC_CS_NUM + 1;
 319
 320         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 321
 322         /* find out the chip-select on which NAND exists */
 323         while (cs < GPMC_CS_NUM) {
 324                 u32 ret = 0;
 325                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 326
 327                 if ((ret & 0xC00) == 0x800) {
 328                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 329                         if (nandcs > GPMC_CS_NUM)
 330                                 nandcs = cs;
 331                 }
 332                 cs++;
 333         }
 334
 335         if (nandcs > GPMC_CS_NUM) {
 336                 printk(KERN_INFO "NAND: Unable to find configuration "
 337                                  "in GPMC\n ");
 338                 return;
 339         }
 340
 341         if (nandcs < GPMC_CS_NUM) {
 342                 omap3beagle_nand_data.cs = nandcs;
 343                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 344                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 345                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 346
 347                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 348                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 349                         printk(KERN_ERR "Unable to register NAND device\n");
 350         }
 351 }
 352
 353 static void __init omap3_beagle_init(void)
 354 {
 355         omap3_beagle_i2c_init();
 356         platform_add_devices(omap3_beagle_devices,
 357                         ARRAY_SIZE(omap3_beagle_devices));
 358         omap_board_config = omap3_beagle_config;
 359         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 360         omap_serial_init();
 361
 362         omap_cfg_reg(J25_34XX_GPIO170);
 363         gpio_request(170, "DVI_nPD");
 364         /* REVISIT leave DVI powered down until it's needed ... */
 365         gpio_direction_output(170, true);
 366
 367         usb_musb_init();
 368         usb_ehci_init();
 369         omap3beagle_flash_init();
 370 }
 371
 372 static void __init omap3_beagle_map_io(void)
 373 {
 374         omap2_set_globals_343x();
 375         omap2_map_common_io();
 376 }
 377
 378 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 379         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 380         .phys_io        = 0x48000000,
 381         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 382         .boot_params    = 0x80000100,
 383         .map_io         = omap3_beagle_map_io,
 384         .init_irq       = omap3_beagle_init_irq,
 385         .init_machine   = omap3_beagle_init,
 386         .timer          = &omap_timer,
 387 MACHINE_END