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