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

   1 /*
   2  * board-overo.c (Gumstix Overo)
   3  *
   4  * Initial code: Steve Sakoman <steve@sakoman.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21
  22 #include <linux/clk.h>
  23 #include <linux/delay.h>
  24 #include <linux/err.h>
  25 #include <linux/init.h>
  26 #include <linux/io.h>
  27 #include <linux/kernel.h>
  28 #include <linux/platform_device.h>
  29 #include <linux/i2c/twl.h>
  30 #include <linux/regulator/machine.h>
  31 #include <linux/regulator/fixed.h>
  32 #include <linux/spi/spi.h>
  33
  34 #include <linux/mtd/mtd.h>
  35 #include <linux/mtd/nand.h>
  36 #include <linux/mtd/partitions.h>
  37 #include <linux/mmc/host.h>
  38
  39 #include <asm/mach-types.h>
  40 #include <asm/mach/arch.h>
  41 #include <asm/mach/flash.h>
  42 #include <asm/mach/map.h>
  43
  44 #include <plat/board.h>
  45 #include <plat/common.h>
  46 #include <video/omapdss.h>
  47 #include <video/omap-panel-generic-dpi.h>
  48 #include <mach/gpio.h>
  49 #include <plat/gpmc.h>
  50 #include <mach/hardware.h>
  51 #include <plat/nand.h>
  52 #include <plat/mcspi.h>
  53 #include <plat/mux.h>
  54 #include <plat/usb.h>
  55
  56 #include "mux.h"
  57 #include "sdram-micron-mt46h32m32lf-6.h"
  58 #include "hsmmc.h"
  59 #include "common-board-devices.h"
  60
  61 #define OVERO_GPIO_BT_XGATE     15
  62 #define OVERO_GPIO_W2W_NRESET   16
  63 #define OVERO_GPIO_PENDOWN      114
  64 #define OVERO_GPIO_BT_NRESET    164
  65 #define OVERO_GPIO_USBH_CPEN    168
  66 #define OVERO_GPIO_USBH_NRESET  183
  67
  68 #define NAND_BLOCK_SIZE SZ_128K
  69
  70 #define OVERO_SMSC911X_CS      5
  71 #define OVERO_SMSC911X_GPIO    176
  72 #define OVERO_SMSC911X2_CS     4
  73 #define OVERO_SMSC911X2_GPIO   65
  74
  75 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
  76         defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
  77
  78 /* fixed regulator for ads7846 */
  79 static struct regulator_consumer_supply ads7846_supply =
  80         REGULATOR_SUPPLY("vcc", "spi1.0");
  81
  82 static struct regulator_init_data vads7846_regulator = {
  83         .constraints = {
  84                 .valid_ops_mask         = REGULATOR_CHANGE_STATUS,
  85         },
  86         .num_consumer_supplies  = 1,
  87         .consumer_supplies      = &ads7846_supply,
  88 };
  89
  90 static struct fixed_voltage_config vads7846 = {
  91         .supply_name            = "vads7846",
  92         .microvolts             = 3300000, /* 3.3V */
  93         .gpio                   = -EINVAL,
  94         .startup_delay          = 0,
  95         .init_data              = &vads7846_regulator,
  96 };
  97
  98 static struct platform_device vads7846_device = {
  99         .name           = "reg-fixed-voltage",
 100         .id             = 1,
 101         .dev = {
 102                 .platform_data = &vads7846,
 103         },
 104 };
 105
 106 static void __init overo_ads7846_init(void)
 107 {
 108         omap_ads7846_init(1, OVERO_GPIO_PENDOWN, 0, NULL);
 109         platform_device_register(&vads7846_device);
 110 }
 111
 112 #else
 113 static inline void __init overo_ads7846_init(void) { return; }
 114 #endif
 115
 116 #if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
 117
 118 #include <linux/smsc911x.h>
 119 #include <plat/gpmc-smsc911x.h>
 120
 121 static struct omap_smsc911x_platform_data smsc911x_cfg = {
 122         .id             = 0,
 123         .cs             = OVERO_SMSC911X_CS,
 124         .gpio_irq       = OVERO_SMSC911X_GPIO,
 125         .gpio_reset     = -EINVAL,
 126         .flags          = SMSC911X_USE_32BIT,
 127 };
 128
 129 static struct omap_smsc911x_platform_data smsc911x2_cfg = {
 130         .id             = 1,
 131         .cs             = OVERO_SMSC911X2_CS,
 132         .gpio_irq       = OVERO_SMSC911X2_GPIO,
 133         .gpio_reset     = -EINVAL,
 134         .flags          = SMSC911X_USE_32BIT,
 135 };
 136
 137 static void __init overo_init_smsc911x(void)
 138 {
 139         gpmc_smsc911x_init(&smsc911x_cfg);
 140         gpmc_smsc911x_init(&smsc911x2_cfg);
 141 }
 142
 143 #else
 144 static inline void __init overo_init_smsc911x(void) { return; }
 145 #endif
 146
 147 /* DSS */
 148 static int lcd_enabled;
 149 static int dvi_enabled;
 150
 151 #define OVERO_GPIO_LCD_EN 144
 152 #define OVERO_GPIO_LCD_BL 145
 153
 154 static struct gpio overo_dss_gpios[] __initdata = {
 155         { OVERO_GPIO_LCD_EN, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_EN" },
 156         { OVERO_GPIO_LCD_BL, GPIOF_OUT_INIT_HIGH, "OVERO_GPIO_LCD_BL" },
 157 };
 158
 159 static void __init overo_display_init(void)
 160 {
 161         if (gpio_request_array(overo_dss_gpios, ARRAY_SIZE(overo_dss_gpios))) {
 162                 printk(KERN_ERR "could not obtain DSS control GPIOs\n");
 163                 return;
 164         }
 165
 166         gpio_export(OVERO_GPIO_LCD_EN, 0);
 167         gpio_export(OVERO_GPIO_LCD_BL, 0);
 168 }
 169
 170 static int overo_panel_enable_dvi(struct omap_dss_device *dssdev)
 171 {
 172         if (lcd_enabled) {
 173                 printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
 174                 return -EINVAL;
 175         }
 176         dvi_enabled = 1;
 177
 178         return 0;
 179 }
 180
 181 static void overo_panel_disable_dvi(struct omap_dss_device *dssdev)
 182 {
 183         dvi_enabled = 0;
 184 }
 185
 186 static struct panel_generic_dpi_data dvi_panel = {
 187         .name                   = "generic",
 188         .platform_enable        = overo_panel_enable_dvi,
 189         .platform_disable       = overo_panel_disable_dvi,
 190 };
 191
 192 static struct omap_dss_device overo_dvi_device = {
 193         .name                   = "dvi",
 194         .type                   = OMAP_DISPLAY_TYPE_DPI,
 195         .driver_name            = "generic_dpi_panel",
 196         .data                   = &dvi_panel,
 197         .phy.dpi.data_lines     = 24,
 198 };
 199
 200 static struct omap_dss_device overo_tv_device = {
 201         .name = "tv",
 202         .driver_name = "venc",
 203         .type = OMAP_DISPLAY_TYPE_VENC,
 204         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 205 };
 206
 207 static int overo_panel_enable_lcd(struct omap_dss_device *dssdev)
 208 {
 209         if (dvi_enabled) {
 210                 printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
 211                 return -EINVAL;
 212         }
 213
 214         gpio_set_value(OVERO_GPIO_LCD_EN, 1);
 215         gpio_set_value(OVERO_GPIO_LCD_BL, 1);
 216         lcd_enabled = 1;
 217         return 0;
 218 }
 219
 220 static void overo_panel_disable_lcd(struct omap_dss_device *dssdev)
 221 {
 222         gpio_set_value(OVERO_GPIO_LCD_EN, 0);
 223         gpio_set_value(OVERO_GPIO_LCD_BL, 0);
 224         lcd_enabled = 0;
 225 }
 226
 227 static struct panel_generic_dpi_data lcd43_panel = {
 228         .name                   = "samsung_lte430wq_f0c",
 229         .platform_enable        = overo_panel_enable_lcd,
 230         .platform_disable       = overo_panel_disable_lcd,
 231 };
 232
 233 static struct omap_dss_device overo_lcd43_device = {
 234         .name                   = "lcd43",
 235         .type                   = OMAP_DISPLAY_TYPE_DPI,
 236         .driver_name            = "generic_dpi_panel",
 237         .data                   = &lcd43_panel,
 238         .phy.dpi.data_lines     = 24,
 239 };
 240
 241 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
 242         defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
 243 static struct omap_dss_device overo_lcd35_device = {
 244         .type                   = OMAP_DISPLAY_TYPE_DPI,
 245         .name                   = "lcd35",
 246         .driver_name            = "lgphilips_lb035q02_panel",
 247         .phy.dpi.data_lines     = 24,
 248         .platform_enable        = overo_panel_enable_lcd,
 249         .platform_disable       = overo_panel_disable_lcd,
 250 };
 251 #endif
 252
 253 static struct omap_dss_device *overo_dss_devices[] = {
 254         &overo_dvi_device,
 255         &overo_tv_device,
 256 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
 257         defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
 258         &overo_lcd35_device,
 259 #endif
 260         &overo_lcd43_device,
 261 };
 262
 263 static struct omap_dss_board_info overo_dss_data = {
 264         .num_devices    = ARRAY_SIZE(overo_dss_devices),
 265         .devices        = overo_dss_devices,
 266         .default_device = &overo_dvi_device,
 267 };
 268
 269 static struct regulator_consumer_supply overo_vdda_dac_supply =
 270         REGULATOR_SUPPLY("vdda_dac", "omapdss_venc");
 271
 272 static struct regulator_consumer_supply overo_vdds_dsi_supply[] = {
 273         REGULATOR_SUPPLY("vdds_dsi", "omapdss"),
 274         REGULATOR_SUPPLY("vdds_dsi", "omapdss_dsi1"),
 275 };
 276
 277 static struct mtd_partition overo_nand_partitions[] = {
 278         {
 279                 .name           = "xloader",
 280                 .offset         = 0,                    /* Offset = 0x00000 */
 281                 .size           = 4 * NAND_BLOCK_SIZE,
 282                 .mask_flags     = MTD_WRITEABLE
 283         },
 284         {
 285                 .name           = "uboot",
 286                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 287                 .size           = 14 * NAND_BLOCK_SIZE,
 288         },
 289         {
 290                 .name           = "uboot environment",
 291                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x240000 */
 292                 .size           = 2 * NAND_BLOCK_SIZE,
 293         },
 294         {
 295                 .name           = "linux",
 296                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 297                 .size           = 32 * NAND_BLOCK_SIZE,
 298         },
 299         {
 300                 .name           = "rootfs",
 301                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 302                 .size           = MTDPART_SIZ_FULL,
 303         },
 304 };
 305
 306 static struct omap2_hsmmc_info mmc[] = {
 307         {
 308                 .mmc            = 1,
 309                 .caps           = MMC_CAP_4_BIT_DATA,
 310                 .gpio_cd        = -EINVAL,
 311                 .gpio_wp        = -EINVAL,
 312         },
 313         {
 314                 .mmc            = 2,
 315                 .caps           = MMC_CAP_4_BIT_DATA,
 316                 .gpio_cd        = -EINVAL,
 317                 .gpio_wp        = -EINVAL,
 318                 .transceiver    = true,
 319                 .ocr_mask       = 0x00100000,   /* 3.3V */
 320         },
 321         {}      /* Terminator */
 322 };
 323
 324 static struct regulator_consumer_supply overo_vmmc1_supply = {
 325         .supply                 = "vmmc",
 326 };
 327
 328 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 329 #include <linux/leds.h>
 330
 331 static struct gpio_led gpio_leds[] = {
 332         {
 333                 .name                   = "overo:red:gpio21",
 334                 .default_trigger        = "heartbeat",
 335                 .gpio                   = 21,
 336                 .active_low             = true,
 337         },
 338         {
 339                 .name                   = "overo:blue:gpio22",
 340                 .default_trigger        = "none",
 341                 .gpio                   = 22,
 342                 .active_low             = true,
 343         },
 344         {
 345                 .name                   = "overo:blue:COM",
 346                 .default_trigger        = "mmc0",
 347                 .gpio                   = -EINVAL,      /* gets replaced */
 348                 .active_low             = true,
 349         },
 350 };
 351
 352 static struct gpio_led_platform_data gpio_leds_pdata = {
 353         .leds           = gpio_leds,
 354         .num_leds       = ARRAY_SIZE(gpio_leds),
 355 };
 356
 357 static struct platform_device gpio_leds_device = {
 358         .name   = "leds-gpio",
 359         .id     = -1,
 360         .dev    = {
 361                 .platform_data  = &gpio_leds_pdata,
 362         },
 363 };
 364
 365 static void __init overo_init_led(void)
 366 {
 367         platform_device_register(&gpio_leds_device);
 368 }
 369
 370 #else
 371 static inline void __init overo_init_led(void) { return; }
 372 #endif
 373
 374 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 375 #include <linux/input.h>
 376 #include <linux/gpio_keys.h>
 377
 378 static struct gpio_keys_button gpio_buttons[] = {
 379         {
 380                 .code                   = BTN_0,
 381                 .gpio                   = 23,
 382                 .desc                   = "button0",
 383                 .wakeup                 = 1,
 384         },
 385         {
 386                 .code                   = BTN_1,
 387                 .gpio                   = 14,
 388                 .desc                   = "button1",
 389                 .wakeup                 = 1,
 390         },
 391 };
 392
 393 static struct gpio_keys_platform_data gpio_keys_pdata = {
 394         .buttons        = gpio_buttons,
 395         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 396 };
 397
 398 static struct platform_device gpio_keys_device = {
 399         .name   = "gpio-keys",
 400         .id     = -1,
 401         .dev    = {
 402                 .platform_data  = &gpio_keys_pdata,
 403         },
 404 };
 405
 406 static void __init overo_init_keys(void)
 407 {
 408         platform_device_register(&gpio_keys_device);
 409 }
 410
 411 #else
 412 static inline void __init overo_init_keys(void) { return; }
 413 #endif
 414
 415 static int overo_twl_gpio_setup(struct device *dev,
 416                 unsigned gpio, unsigned ngpio)
 417 {
 418         omap2_hsmmc_init(mmc);
 419
 420         overo_vmmc1_supply.dev = mmc[0].dev;
 421
 422 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 423         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 424         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 425 #endif
 426
 427         return 0;
 428 }
 429
 430 static struct twl4030_gpio_platform_data overo_gpio_data = {
 431         .gpio_base      = OMAP_MAX_GPIO_LINES,
 432         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 433         .irq_end        = TWL4030_GPIO_IRQ_END,
 434         .use_leds       = true,
 435         .setup          = overo_twl_gpio_setup,
 436 };
 437
 438 static struct twl4030_usb_data overo_usb_data = {
 439         .usb_mode       = T2_USB_MODE_ULPI,
 440 };
 441
 442 static struct regulator_init_data overo_vmmc1 = {
 443         .constraints = {
 444                 .min_uV                 = 1850000,
 445                 .max_uV                 = 3150000,
 446                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 447                                         | REGULATOR_MODE_STANDBY,
 448                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 449                                         | REGULATOR_CHANGE_MODE
 450                                         | REGULATOR_CHANGE_STATUS,
 451         },
 452         .num_consumer_supplies  = 1,
 453         .consumer_supplies      = &overo_vmmc1_supply,
 454 };
 455
 456 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 457 static struct regulator_init_data overo_vdac = {
 458         .constraints = {
 459                 .min_uV                 = 1800000,
 460                 .max_uV                 = 1800000,
 461                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 462                                         | REGULATOR_MODE_STANDBY,
 463                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 464                                         | REGULATOR_CHANGE_STATUS,
 465         },
 466         .num_consumer_supplies  = 1,
 467         .consumer_supplies      = &overo_vdda_dac_supply,
 468 };
 469
 470 /* VPLL2 for digital video outputs */
 471 static struct regulator_init_data overo_vpll2 = {
 472         .constraints = {
 473                 .name                   = "VDVI",
 474                 .min_uV                 = 1800000,
 475                 .max_uV                 = 1800000,
 476                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 477                                         | REGULATOR_MODE_STANDBY,
 478                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 479                                         | REGULATOR_CHANGE_STATUS,
 480         },
 481         .num_consumer_supplies  = ARRAY_SIZE(overo_vdds_dsi_supply),
 482         .consumer_supplies      = overo_vdds_dsi_supply,
 483 };
 484
 485 static struct twl4030_codec_audio_data overo_audio_data;
 486
 487 static struct twl4030_codec_data overo_codec_data = {
 488         .audio_mclk = 26000000,
 489         .audio = &overo_audio_data,
 490 };
 491
 492 static struct twl4030_platform_data overo_twldata = {
 493         .irq_base       = TWL4030_IRQ_BASE,
 494         .irq_end        = TWL4030_IRQ_END,
 495         .gpio           = &overo_gpio_data,
 496         .usb            = &overo_usb_data,
 497         .codec          = &overo_codec_data,
 498         .vmmc1          = &overo_vmmc1,
 499         .vdac           = &overo_vdac,
 500         .vpll2          = &overo_vpll2,
 501 };
 502
 503 static int __init overo_i2c_init(void)
 504 {
 505         omap3_pmic_init("tps65950", &overo_twldata);
 506         /* i2c2 pins are used for gpio */
 507         omap_register_i2c_bus(3, 400, NULL, 0);
 508         return 0;
 509 }
 510
 511 static struct spi_board_info overo_spi_board_info[] __initdata = {
 512 #if defined(CONFIG_PANEL_LGPHILIPS_LB035Q02) || \
 513         defined(CONFIG_PANEL_LGPHILIPS_LB035Q02_MODULE)
 514         {
 515                 .modalias               = "lgphilips_lb035q02_panel-spi",
 516                 .bus_num                = 1,
 517                 .chip_select            = 1,
 518                 .max_speed_hz           = 500000,
 519                 .mode                   = SPI_MODE_3,
 520         },
 521 #endif
 522 };
 523
 524 static int __init overo_spi_init(void)
 525 {
 526         overo_ads7846_init();
 527         spi_register_board_info(overo_spi_board_info,
 528                         ARRAY_SIZE(overo_spi_board_info));
 529         return 0;
 530 }
 531
 532 static void __init overo_init_early(void)
 533 {
 534         omap2_init_common_infrastructure();
 535         omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
 536                                   mt46h32m32lf6_sdrc_params);
 537 }
 538
 539 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 540         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 541         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 542         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 543         .phy_reset  = true,
 544         .reset_gpio_port[0]  = -EINVAL,
 545         .reset_gpio_port[1]  = OVERO_GPIO_USBH_NRESET,
 546         .reset_gpio_port[2]  = -EINVAL
 547 };
 548
 549 #ifdef CONFIG_OMAP_MUX
 550 static struct omap_board_mux board_mux[] __initdata = {
 551         { .reg_offset = OMAP_MUX_TERMINATOR },
 552 };
 553 #endif
 554
 555 static struct gpio overo_bt_gpios[] __initdata = {
 556         { OVERO_GPIO_BT_XGATE,  GPIOF_OUT_INIT_LOW,     "lcd enable"    },
 557         { OVERO_GPIO_BT_NRESET, GPIOF_OUT_INIT_HIGH,    "lcd bl enable" },
 558 };
 559
 560 static void __init overo_init(void)
 561 {
 562         int ret;
 563
 564         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 565         overo_i2c_init();
 566         omap_display_init(&overo_dss_data);
 567         omap_serial_init();
 568         omap_nand_flash_init(0, overo_nand_partitions,
 569                              ARRAY_SIZE(overo_nand_partitions));
 570         usb_musb_init(NULL);
 571         usbhs_init(&usbhs_bdata);
 572         overo_spi_init();
 573         overo_ads7846_init();
 574         overo_init_smsc911x();
 575         overo_display_init();
 576         overo_init_led();
 577         overo_init_keys();
 578
 579         /* Ensure SDRC pins are mux'd for self-refresh */
 580         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 581         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 582
 583         ret = gpio_request_one(OVERO_GPIO_W2W_NRESET, GPIOF_OUT_INIT_HIGH,
 584                                "OVERO_GPIO_W2W_NRESET");
 585         if (ret == 0) {
 586                 gpio_export(OVERO_GPIO_W2W_NRESET, 0);
 587                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 0);
 588                 udelay(10);
 589                 gpio_set_value(OVERO_GPIO_W2W_NRESET, 1);
 590         } else {
 591                 printk(KERN_ERR "could not obtain gpio for "
 592                                         "OVERO_GPIO_W2W_NRESET\n");
 593         }
 594
 595         ret = gpio_request_array(overo_bt_gpios, ARRAY_SIZE(overo_bt_gpios));
 596         if (ret) {
 597                 pr_err("%s: could not obtain BT gpios\n", __func__);
 598         } else {
 599                 gpio_export(OVERO_GPIO_BT_XGATE, 0);
 600                 gpio_export(OVERO_GPIO_BT_NRESET, 0);
 601                 gpio_set_value(OVERO_GPIO_BT_NRESET, 0);
 602                 mdelay(6);
 603                 gpio_set_value(OVERO_GPIO_BT_NRESET, 1);
 604         }
 605
 606         ret = gpio_request_one(OVERO_GPIO_USBH_CPEN, GPIOF_OUT_INIT_HIGH,
 607                                "OVERO_GPIO_USBH_CPEN");
 608         if (ret == 0)
 609                 gpio_export(OVERO_GPIO_USBH_CPEN, 0);
 610         else
 611                 printk(KERN_ERR "could not obtain gpio for "
 612                                         "OVERO_GPIO_USBH_CPEN\n");
 613 }
 614
 615 MACHINE_START(OVERO, "Gumstix Overo")
 616         .boot_params    = 0x80000100,
 617         .reserve        = omap_reserve,
 618         .map_io         = omap3_map_io,
 619         .init_early     = overo_init_early,
 620         .init_irq       = omap_init_irq,
 621         .init_machine   = overo_init,
 622         .timer          = &omap_timer,
 623 MACHINE_END