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.h>
  42 #include <mach/common.h>
  43 #include <mach/gpmc.h>
  44 #include <mach/nand.h>
  45 #include <mach/mux.h>
  46
  47 #include "twl4030-generic-scripts.h"
  48 #include "mmc-twl4030.h"
  49
  50
  51 #define GPMC_CS0_BASE  0x60
  52 #define GPMC_CS_SIZE   0x30
  53
  54 #define NAND_BLOCK_SIZE         SZ_128K
  55
  56 static struct mtd_partition omap3beagle_nand_partitions[] = {
  57         /* All the partition sizes are listed in terms of NAND block size */
  58         {
  59                 .name           = "X-Loader",
  60                 .offset         = 0,
  61                 .size           = 4 * NAND_BLOCK_SIZE,
  62                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  63         },
  64         {
  65                 .name           = "U-Boot",
  66                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  67                 .size           = 15 * NAND_BLOCK_SIZE,
  68                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  69         },
  70         {
  71                 .name           = "U-Boot Env",
  72                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  73                 .size           = 1 * NAND_BLOCK_SIZE,
  74         },
  75         {
  76                 .name           = "Kernel",
  77                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  78                 .size           = 32 * NAND_BLOCK_SIZE,
  79         },
  80         {
  81                 .name           = "File System",
  82                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  83                 .size           = MTDPART_SIZ_FULL,
  84         },
  85 };
  86
  87 static struct omap_nand_platform_data omap3beagle_nand_data = {
  88         .options        = NAND_BUSWIDTH_16,
  89         .parts          = omap3beagle_nand_partitions,
  90         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  91         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  92         .nand_setup     = NULL,
  93         .dev_ready      = NULL,
  94 };
  95
  96 static struct resource omap3beagle_nand_resource = {
  97         .flags          = IORESOURCE_MEM,
  98 };
  99
 100 static struct platform_device omap3beagle_nand_device = {
 101         .name           = "omap2-nand",
 102         .id             = -1,
 103         .dev            = {
 104                 .platform_data  = &omap3beagle_nand_data,
 105         },
 106         .num_resources  = 1,
 107         .resource       = &omap3beagle_nand_resource,
 108 };
 109
 110 #include "sdram-micron-mt46h32m32lf-6.h"
 111
 112 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
 113         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
 114 };
 115
 116 static struct twl4030_usb_data beagle_usb_data = {
 117         .usb_mode       = T2_USB_MODE_ULPI,
 118 };
 119
 120 static struct twl4030_hsmmc_info mmc[] = {
 121         {
 122                 .mmc            = 1,
 123                 .wires          = 8,
 124                 .gpio_wp        = 29,
 125         },
 126         {}      /* Terminator */
 127 };
 128
 129 static struct regulator_consumer_supply beagle_vmmc1_supply = {
 130         .supply                 = "vmmc",
 131 };
 132
 133 static struct regulator_consumer_supply beagle_vsim_supply = {
 134         .supply                 = "vmmc_dat4..7",
 135 };
 136
 137 static struct gpio_led gpio_leds[];
 138
 139 static int beagle_twl_gpio_setup(struct device *dev,
 140                 unsigned gpio, unsigned ngpio)
 141 {
 142         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 143         omap_cfg_reg(AH8_34XX_GPIO29);
 144         mmc[0].gpio_cd = gpio + 0;
 145         twl4030_mmc_init(mmc);
 146
 147         /* link regulators to MMC adapters */
 148         beagle_vmmc1_supply.dev = mmc[0].dev;
 149         beagle_vsim_supply.dev = mmc[0].dev;
 150
 151         /* REVISIT: need ehci-omap hooks for external VBUS
 152          * power switch and overcurrent detect
 153          */
 154
 155         gpio_request(gpio + 1, "EHCI_nOC");
 156         gpio_direction_input(gpio + 1);
 157
 158         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 159         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 160         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 161
 162         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 163         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 164
 165         return 0;
 166 }
 167
 168 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 169         .gpio_base      = OMAP_MAX_GPIO_LINES,
 170         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 171         .irq_end        = TWL4030_GPIO_IRQ_END,
 172         .use_leds       = true,
 173         .pullups        = BIT(1),
 174         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 175                                 | BIT(15) | BIT(16) | BIT(17),
 176         .setup          = beagle_twl_gpio_setup,
 177 };
 178
 179 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 180 static struct regulator_init_data beagle_vmmc1 = {
 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         .num_consumer_supplies  = 1,
 189         .consumer_supplies      = &beagle_vmmc1_supply,
 190 };
 191
 192 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 193 static struct regulator_init_data beagle_vsim = {
 194         .constraints = {
 195                 .valid_modes_mask = REGULATOR_MODE_NORMAL
 196                                 | REGULATOR_MODE_STANDBY,
 197                 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
 198                                 | REGULATOR_CHANGE_MODE
 199                                 | REGULATOR_CHANGE_STATUS,
 200         },
 201         .num_consumer_supplies  = 1,
 202         .consumer_supplies      = &beagle_vsim_supply,
 203 };
 204
 205 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 206 static struct regulator_init_data beagle_vdac = {
 207         .constraints = {
 208                 .min_uV                 = 1800000,
 209                 .max_uV                 = 1800000,
 210                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 211                                         | REGULATOR_MODE_STANDBY,
 212                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 213                                         | REGULATOR_CHANGE_STATUS,
 214         },
 215 };
 216
 217 static struct twl4030_platform_data beagle_twldata = {
 218         .irq_base       = TWL4030_IRQ_BASE,
 219         .irq_end        = TWL4030_IRQ_END,
 220
 221         /* platform_data for children goes here */
 222         .usb            = &beagle_usb_data,
 223         .gpio           = &beagle_gpio_data,
 224         .power          = GENERIC3430_T2SCRIPTS_DATA,
 225         .vmmc1          = &beagle_vmmc1,
 226         .vsim           = &beagle_vsim,
 227         .vdac           = &beagle_vdac,
 228 };
 229
 230 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 231         {
 232                 I2C_BOARD_INFO("twl4030", 0x48),
 233                 .flags = I2C_CLIENT_WAKE,
 234                 .irq = INT_34XX_SYS_NIRQ,
 235                 .platform_data = &beagle_twldata,
 236         },
 237 };
 238
 239 static int __init omap3_beagle_i2c_init(void)
 240 {
 241         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 242                         ARRAY_SIZE(beagle_i2c_boardinfo));
 243 #ifdef CONFIG_I2C2_OMAP_BEAGLE
 244         omap_register_i2c_bus(2, 400, NULL, 0);
 245 #endif
 246         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 247          * projector don't work reliably with 400kHz */
 248         omap_register_i2c_bus(3, 100, NULL, 0);
 249         return 0;
 250 }
 251
 252 static void __init omap3_beagle_init_irq(void)
 253 {
 254         omap2_init_common_hw(mt46h32m32lf6_sdrc_params);
 255         omap_init_irq();
 256         omap_gpio_init();
 257 }
 258
 259 static struct platform_device omap3_beagle_lcd_device = {
 260         .name           = "omap3beagle_lcd",
 261         .id             = -1,
 262 };
 263
 264 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 265         .ctrl_name      = "internal",
 266 };
 267
 268 static struct gpio_led gpio_leds[] = {
 269         {
 270                 .name                   = "beagleboard::usr0",
 271                 .default_trigger        = "heartbeat",
 272                 .gpio                   = 150,
 273         },
 274         {
 275                 .name                   = "beagleboard::usr1",
 276                 .default_trigger        = "mmc0",
 277                 .gpio                   = 149,
 278         },
 279         {
 280                 .name                   = "beagleboard::pmu_stat",
 281                 .gpio                   = -EINVAL,      /* gets replaced */
 282                 .active_low             = true,
 283         },
 284 };
 285
 286 static struct gpio_led_platform_data gpio_led_info = {
 287         .leds           = gpio_leds,
 288         .num_leds       = ARRAY_SIZE(gpio_leds),
 289 };
 290
 291 static struct platform_device leds_gpio = {
 292         .name   = "leds-gpio",
 293         .id     = -1,
 294         .dev    = {
 295                 .platform_data  = &gpio_led_info,
 296         },
 297 };
 298
 299 static struct gpio_keys_button gpio_buttons[] = {
 300         {
 301                 .code                   = BTN_EXTRA,
 302                 .gpio                   = 7,
 303                 .desc                   = "user",
 304                 .wakeup                 = 1,
 305         },
 306 };
 307
 308 static struct gpio_keys_platform_data gpio_key_info = {
 309         .buttons        = gpio_buttons,
 310         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 311 };
 312
 313 static struct platform_device keys_gpio = {
 314         .name   = "gpio-keys",
 315         .id     = -1,
 316         .dev    = {
 317                 .platform_data  = &gpio_key_info,
 318         },
 319 };
 320
 321 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 322         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
 323         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 324 };
 325
 326 static struct platform_device *omap3_beagle_devices[] __initdata = {
 327         &omap3_beagle_lcd_device,
 328         &leds_gpio,
 329         &keys_gpio,
 330 };
 331
 332 static void __init omap3beagle_flash_init(void)
 333 {
 334         u8 cs = 0;
 335         u8 nandcs = GPMC_CS_NUM + 1;
 336
 337         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 338
 339         /* find out the chip-select on which NAND exists */
 340         while (cs < GPMC_CS_NUM) {
 341                 u32 ret = 0;
 342                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 343
 344                 if ((ret & 0xC00) == 0x800) {
 345                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 346                         if (nandcs > GPMC_CS_NUM)
 347                                 nandcs = cs;
 348                 }
 349                 cs++;
 350         }
 351
 352         if (nandcs > GPMC_CS_NUM) {
 353                 printk(KERN_INFO "NAND: Unable to find configuration "
 354                                  "in GPMC\n ");
 355                 return;
 356         }
 357
 358         if (nandcs < GPMC_CS_NUM) {
 359                 omap3beagle_nand_data.cs = nandcs;
 360                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 361                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 362                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 363
 364                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 365                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 366                         printk(KERN_ERR "Unable to register NAND device\n");
 367         }
 368 }
 369
 370 static void __init omap3_beagle_init(void)
 371 {
 372         omap3_beagle_i2c_init();
 373         platform_add_devices(omap3_beagle_devices,
 374                         ARRAY_SIZE(omap3_beagle_devices));
 375         omap_board_config = omap3_beagle_config;
 376         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 377         omap_serial_init();
 378
 379         omap_cfg_reg(J25_34XX_GPIO170);
 380         gpio_request(170, "DVI_nPD");
 381         /* REVISIT leave DVI powered down until it's needed ... */
 382         gpio_direction_output(170, true);
 383
 384         usb_musb_init();
 385         usb_ehci_init();
 386         omap3beagle_flash_init();
 387 }
 388
 389 static void __init omap3_beagle_map_io(void)
 390 {
 391         omap2_set_globals_343x();
 392         omap2_map_common_io();
 393 }
 394
 395 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 396         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 397         .phys_io        = 0x48000000,
 398         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 399         .boot_params    = 0x80000100,
 400         .map_io         = omap3_beagle_map_io,
 401         .init_irq       = omap3_beagle_init_irq,
 402         .init_machine   = omap3_beagle_init,
 403         .timer          = &omap_timer,
 404 MACHINE_END