arch/arm/mach-mxs/mach-mx28evk.c

   1 /*
   2  * Copyright 2010 Freescale Semiconductor, Inc. All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <linux/delay.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/gpio.h>
  18 #include <linux/leds.h>
  19 #include <linux/clk.h>
  20 #include <linux/i2c.h>
  21 #include <linux/regulator/machine.h>
  22 #include <linux/regulator/fixed.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/time.h>
  27
  28 #include <mach/common.h>
  29 #include <mach/iomux-mx28.h>
  30
  31 #include "devices-mx28.h"
  32
  33 #define MX28EVK_FLEXCAN_SWITCH  MXS_GPIO_NR(2, 13)
  34 #define MX28EVK_FEC_PHY_POWER   MXS_GPIO_NR(2, 15)
  35 #define MX28EVK_GPIO_LED        MXS_GPIO_NR(3, 5)
  36 #define MX28EVK_BL_ENABLE       MXS_GPIO_NR(3, 18)
  37 #define MX28EVK_LCD_ENABLE      MXS_GPIO_NR(3, 30)
  38 #define MX28EVK_FEC_PHY_RESET   MXS_GPIO_NR(4, 13)
  39
  40 #define MX28EVK_MMC0_WRITE_PROTECT      MXS_GPIO_NR(2, 12)
  41 #define MX28EVK_MMC1_WRITE_PROTECT      MXS_GPIO_NR(0, 28)
  42 #define MX28EVK_MMC0_SLOT_POWER         MXS_GPIO_NR(3, 28)
  43 #define MX28EVK_MMC1_SLOT_POWER         MXS_GPIO_NR(3, 29)
  44
  45 static const iomux_cfg_t mx28evk_pads[] __initconst = {
  46         /* duart */
  47         MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
  48         MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
  49
  50         /* auart0 */
  51         MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
  52         MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
  53         MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
  54         MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
  55         /* auart3 */
  56         MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL,
  57         MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL,
  58         MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL,
  59         MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL,
  60
  61 #define MXS_PAD_FEC     (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
  62         /* fec0 */
  63         MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
  64         MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
  65         MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
  66         MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
  67         MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
  68         MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
  69         MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
  70         MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
  71         MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
  72         /* fec1 */
  73         MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC,
  74         MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC,
  75         MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC,
  76         MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC,
  77         MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC,
  78         MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC,
  79         /* phy power line */
  80         MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL,
  81         /* phy reset line */
  82         MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL,
  83
  84         /* flexcan0 */
  85         MX28_PAD_GPMI_RDY2__CAN0_TX,
  86         MX28_PAD_GPMI_RDY3__CAN0_RX,
  87         /* flexcan1 */
  88         MX28_PAD_GPMI_CE2N__CAN1_TX,
  89         MX28_PAD_GPMI_CE3N__CAN1_RX,
  90         /* transceiver power control */
  91         MX28_PAD_SSP1_CMD__GPIO_2_13,
  92
  93         /* mxsfb (lcdif) */
  94         MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
  95         MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
  96         MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
  97         MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
  98         MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
  99         MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
 100         MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
 101         MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
 102         MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
 103         MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
 104         MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
 105         MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
 106         MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
 107         MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
 108         MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
 109         MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
 110         MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
 111         MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
 112         MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
 113         MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
 114         MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
 115         MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
 116         MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
 117         MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
 118         MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
 119         MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
 120         MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
 121         MX28_PAD_LCD_CS__LCD_ENABLE | MXS_PAD_CTRL,
 122         /* LCD panel enable */
 123         MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
 124         /* backlight control */
 125         MX28_PAD_PWM2__GPIO_3_18 | MXS_PAD_CTRL,
 126         /* mmc0 */
 127         MX28_PAD_SSP0_DATA0__SSP0_D0 |
 128                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 129         MX28_PAD_SSP0_DATA1__SSP0_D1 |
 130                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 131         MX28_PAD_SSP0_DATA2__SSP0_D2 |
 132                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 133         MX28_PAD_SSP0_DATA3__SSP0_D3 |
 134                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 135         MX28_PAD_SSP0_DATA4__SSP0_D4 |
 136                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 137         MX28_PAD_SSP0_DATA5__SSP0_D5 |
 138                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 139         MX28_PAD_SSP0_DATA6__SSP0_D6 |
 140                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 141         MX28_PAD_SSP0_DATA7__SSP0_D7 |
 142                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 143         MX28_PAD_SSP0_CMD__SSP0_CMD |
 144                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 145         MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
 146                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 147         MX28_PAD_SSP0_SCK__SSP0_SCK |
 148                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 149         /* write protect */
 150         MX28_PAD_SSP1_SCK__GPIO_2_12 |
 151                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 152         /* slot power enable */
 153         MX28_PAD_PWM3__GPIO_3_28 |
 154                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 155
 156         /* mmc1 */
 157         MX28_PAD_GPMI_D00__SSP1_D0 |
 158                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 159         MX28_PAD_GPMI_D01__SSP1_D1 |
 160                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 161         MX28_PAD_GPMI_D02__SSP1_D2 |
 162                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 163         MX28_PAD_GPMI_D03__SSP1_D3 |
 164                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 165         MX28_PAD_GPMI_D04__SSP1_D4 |
 166                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 167         MX28_PAD_GPMI_D05__SSP1_D5 |
 168                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 169         MX28_PAD_GPMI_D06__SSP1_D6 |
 170                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 171         MX28_PAD_GPMI_D07__SSP1_D7 |
 172                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 173         MX28_PAD_GPMI_RDY1__SSP1_CMD |
 174                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 175         MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT |
 176                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 177         MX28_PAD_GPMI_WRN__SSP1_SCK |
 178                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 179         /* write protect */
 180         MX28_PAD_GPMI_RESETN__GPIO_0_28 |
 181                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 182         /* slot power enable */
 183         MX28_PAD_PWM4__GPIO_3_29 |
 184                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 185
 186         /* led */
 187         MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL,
 188
 189         /* I2C */
 190         MX28_PAD_I2C0_SCL__I2C0_SCL |
 191                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 192         MX28_PAD_I2C0_SDA__I2C0_SDA |
 193                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 194
 195         /* saif0 & saif1 */
 196         MX28_PAD_SAIF0_MCLK__SAIF0_MCLK |
 197                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 198         MX28_PAD_SAIF0_LRCLK__SAIF0_LRCLK |
 199                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 200         MX28_PAD_SAIF0_BITCLK__SAIF0_BITCLK |
 201                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 202         MX28_PAD_SAIF0_SDATA0__SAIF0_SDATA0 |
 203                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 204         MX28_PAD_SAIF1_SDATA0__SAIF1_SDATA0 |
 205                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 206 };
 207
 208 /* led */
 209 static const struct gpio_led mx28evk_leds[] __initconst = {
 210         {
 211                 .name = "GPIO-LED",
 212                 .default_trigger = "heartbeat",
 213                 .gpio = MX28EVK_GPIO_LED,
 214         },
 215 };
 216
 217 static const struct gpio_led_platform_data mx28evk_led_data __initconst = {
 218         .leds = mx28evk_leds,
 219         .num_leds = ARRAY_SIZE(mx28evk_leds),
 220 };
 221
 222 /* fec */
 223 static void __init mx28evk_fec_reset(void)
 224 {
 225         int ret;
 226         struct clk *clk;
 227
 228         /* Enable fec phy clock */
 229         clk = clk_get_sys("pll2", NULL);
 230         if (!IS_ERR(clk))
 231                 clk_enable(clk);
 232
 233         /* Power up fec phy */
 234         ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
 235         if (ret) {
 236                 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
 237                 return;
 238         }
 239
 240         ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
 241         if (ret) {
 242                 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
 243                 return;
 244         }
 245
 246         /* Reset fec phy */
 247         ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
 248         if (ret) {
 249                 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
 250                 return;
 251         }
 252
 253         gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
 254         if (ret) {
 255                 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
 256                 return;
 257         }
 258
 259         mdelay(1);
 260         gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
 261 }
 262
 263 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
 264         {
 265                 /* fec0 */
 266                 .phy = PHY_INTERFACE_MODE_RMII,
 267         }, {
 268                 /* fec1 */
 269                 .phy = PHY_INTERFACE_MODE_RMII,
 270         },
 271 };
 272
 273 static int __init mx28evk_fec_get_mac(void)
 274 {
 275         int i;
 276         u32 val;
 277         const u32 *ocotp = mxs_get_ocotp();
 278
 279         if (!ocotp)
 280                 goto error;
 281
 282         /*
 283          * OCOTP only stores the last 4 octets for each mac address,
 284          * so hard-code Freescale OUI (00:04:9f) here.
 285          */
 286         for (i = 0; i < 2; i++) {
 287                 val = ocotp[i * 4];
 288                 mx28_fec_pdata[i].mac[0] = 0x00;
 289                 mx28_fec_pdata[i].mac[1] = 0x04;
 290                 mx28_fec_pdata[i].mac[2] = 0x9f;
 291                 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
 292                 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
 293                 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
 294         }
 295
 296         return 0;
 297
 298 error:
 299         pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
 300         return -ETIMEDOUT;
 301 }
 302
 303 /*
 304  * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
 305  */
 306 static int flexcan0_en, flexcan1_en;
 307
 308 static void mx28evk_flexcan_switch(void)
 309 {
 310         if (flexcan0_en || flexcan1_en)
 311                 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
 312         else
 313                 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
 314 }
 315
 316 static void mx28evk_flexcan0_switch(int enable)
 317 {
 318         flexcan0_en = enable;
 319         mx28evk_flexcan_switch();
 320 }
 321
 322 static void mx28evk_flexcan1_switch(int enable)
 323 {
 324         flexcan1_en = enable;
 325         mx28evk_flexcan_switch();
 326 }
 327
 328 static const struct flexcan_platform_data
 329                 mx28evk_flexcan_pdata[] __initconst = {
 330         {
 331                 .transceiver_switch = mx28evk_flexcan0_switch,
 332         }, {
 333                 .transceiver_switch = mx28evk_flexcan1_switch,
 334         }
 335 };
 336
 337 /* mxsfb (lcdif) */
 338 static struct fb_videomode mx28evk_video_modes[] = {
 339         {
 340                 .name           = "Seiko-43WVF1G",
 341                 .refresh        = 60,
 342                 .xres           = 800,
 343                 .yres           = 480,
 344                 .pixclock       = 29851, /* picosecond (33.5 MHz) */
 345                 .left_margin    = 89,
 346                 .right_margin   = 164,
 347                 .upper_margin   = 23,
 348                 .lower_margin   = 10,
 349                 .hsync_len      = 10,
 350                 .vsync_len      = 10,
 351                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
 352                                   FB_SYNC_DOTCLK_FAILING_ACT,
 353         },
 354 };
 355
 356 static const struct mxsfb_platform_data mx28evk_mxsfb_pdata __initconst = {
 357         .mode_list      = mx28evk_video_modes,
 358         .mode_count     = ARRAY_SIZE(mx28evk_video_modes),
 359         .default_bpp    = 32,
 360         .ld_intf_width  = STMLCDIF_24BIT,
 361 };
 362
 363 static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = {
 364         {
 365                 /* mmc0 */
 366                 .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT,
 367                 .flags = SLOTF_8_BIT_CAPABLE,
 368         }, {
 369                 /* mmc1 */
 370                 .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT,
 371                 .flags = SLOTF_8_BIT_CAPABLE,
 372         },
 373 };
 374
 375 static struct i2c_board_info mxs_i2c0_board_info[] __initdata = {
 376         {
 377                 I2C_BOARD_INFO("sgtl5000", 0x0a),
 378         },
 379 };
 380
 381 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 382 static struct regulator_consumer_supply mx28evk_audio_consumer_supplies[] = {
 383         REGULATOR_SUPPLY("VDDA", "0-000a"),
 384         REGULATOR_SUPPLY("VDDIO", "0-000a"),
 385 };
 386
 387 static struct regulator_init_data mx28evk_vdd_reg_init_data = {
 388         .constraints    = {
 389                 .name   = "3V3",
 390                 .always_on = 1,
 391         },
 392         .consumer_supplies = mx28evk_audio_consumer_supplies,
 393         .num_consumer_supplies = ARRAY_SIZE(mx28evk_audio_consumer_supplies),
 394 };
 395
 396 static struct fixed_voltage_config mx28evk_vdd_pdata = {
 397         .supply_name    = "board-3V3",
 398         .microvolts     = 3300000,
 399         .gpio           = -EINVAL,
 400         .enabled_at_boot = 1,
 401         .init_data      = &mx28evk_vdd_reg_init_data,
 402 };
 403 static struct platform_device mx28evk_voltage_regulator = {
 404         .name           = "reg-fixed-voltage",
 405         .id             = -1,
 406         .num_resources  = 0,
 407         .dev            = {
 408                 .platform_data  = &mx28evk_vdd_pdata,
 409         },
 410 };
 411 static void __init mx28evk_add_regulators(void)
 412 {
 413         platform_device_register(&mx28evk_voltage_regulator);
 414 }
 415 #else
 416 static void __init mx28evk_add_regulators(void) {}
 417 #endif
 418
 419 static struct gpio mx28evk_lcd_gpios[] = {
 420         { MX28EVK_LCD_ENABLE, GPIOF_OUT_INIT_HIGH, "lcd-enable" },
 421         { MX28EVK_BL_ENABLE, GPIOF_OUT_INIT_HIGH, "bl-enable" },
 422 };
 423
 424 static void __init mx28evk_init(void)
 425 {
 426         int ret;
 427
 428         mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
 429
 430         mx28_add_duart();
 431         mx28_add_auart0();
 432         mx28_add_auart3();
 433
 434         if (mx28evk_fec_get_mac())
 435                 pr_warn("%s: failed on fec mac setup\n", __func__);
 436
 437         mx28evk_fec_reset();
 438         mx28_add_fec(0, &mx28_fec_pdata[0]);
 439         mx28_add_fec(1, &mx28_fec_pdata[1]);
 440
 441         ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
 442                                 "flexcan-switch");
 443         if (ret) {
 444                 pr_err("failed to request gpio flexcan-switch: %d\n", ret);
 445         } else {
 446                 mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]);
 447                 mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]);
 448         }
 449
 450         ret = gpio_request_array(mx28evk_lcd_gpios,
 451                                  ARRAY_SIZE(mx28evk_lcd_gpios));
 452         if (ret)
 453                 pr_warn("failed to request gpio pins for lcd: %d\n", ret);
 454         else
 455                 mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
 456
 457         mx28_add_saif(0);
 458         mx28_add_saif(1);
 459
 460         mx28_add_mxs_i2c(0);
 461         i2c_register_board_info(0, mxs_i2c0_board_info,
 462                                 ARRAY_SIZE(mxs_i2c0_board_info));
 463
 464         mx28evk_add_regulators();
 465
 466         mxs_add_platform_device("mxs-sgtl5000", 0, NULL, 0,
 467                         NULL, 0);
 468
 469         /* power on mmc slot by writing 0 to the gpio */
 470         ret = gpio_request_one(MX28EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 471                                "mmc0-slot-power");
 472         if (ret)
 473                 pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
 474         mx28_add_mxs_mmc(0, &mx28evk_mmc_pdata[0]);
 475
 476         ret = gpio_request_one(MX28EVK_MMC1_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 477                                "mmc1-slot-power");
 478         if (ret)
 479                 pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
 480         else
 481                 mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
 482
 483         mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
 484         mx28_add_rtc_stmp3xxx();
 485
 486         gpio_led_register_device(0, &mx28evk_led_data);
 487 }
 488
 489 static void __init mx28evk_timer_init(void)
 490 {
 491         mx28_clocks_init();
 492 }
 493
 494 static struct sys_timer mx28evk_timer = {
 495         .init   = mx28evk_timer_init,
 496 };
 497
 498 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
 499         /* Maintainer: Freescale Semiconductor, Inc. */
 500         .map_io         = mx28_map_io,
 501         .init_irq       = mx28_init_irq,
 502         .timer          = &mx28evk_timer,
 503         .init_machine   = mx28evk_init,
 504 MACHINE_END