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 #include <mach/digctl.h>
  31
  32 #include "devices-mx28.h"
  33
  34 #define MX28EVK_FLEXCAN_SWITCH  MXS_GPIO_NR(2, 13)
  35 #define MX28EVK_FEC_PHY_POWER   MXS_GPIO_NR(2, 15)
  36 #define MX28EVK_GPIO_LED        MXS_GPIO_NR(3, 5)
  37 #define MX28EVK_BL_ENABLE       MXS_GPIO_NR(3, 18)
  38 #define MX28EVK_LCD_ENABLE      MXS_GPIO_NR(3, 30)
  39 #define MX28EVK_FEC_PHY_RESET   MXS_GPIO_NR(4, 13)
  40
  41 #define MX28EVK_MMC0_WRITE_PROTECT      MXS_GPIO_NR(2, 12)
  42 #define MX28EVK_MMC1_WRITE_PROTECT      MXS_GPIO_NR(0, 28)
  43 #define MX28EVK_MMC0_SLOT_POWER         MXS_GPIO_NR(3, 28)
  44 #define MX28EVK_MMC1_SLOT_POWER         MXS_GPIO_NR(3, 29)
  45
  46 static const iomux_cfg_t mx28evk_pads[] __initconst = {
  47         /* duart */
  48         MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
  49         MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
  50
  51         /* auart0 */
  52         MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
  53         MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
  54         MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
  55         MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
  56         /* auart3 */
  57         MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL,
  58         MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL,
  59         MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL,
  60         MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL,
  61
  62 #define MXS_PAD_FEC     (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
  63         /* fec0 */
  64         MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
  65         MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
  66         MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
  67         MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
  68         MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
  69         MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
  70         MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
  71         MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
  72         MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
  73         /* fec1 */
  74         MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC,
  75         MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC,
  76         MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC,
  77         MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC,
  78         MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC,
  79         MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC,
  80         /* phy power line */
  81         MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL,
  82         /* phy reset line */
  83         MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL,
  84
  85         /* flexcan0 */
  86         MX28_PAD_GPMI_RDY2__CAN0_TX,
  87         MX28_PAD_GPMI_RDY3__CAN0_RX,
  88         /* flexcan1 */
  89         MX28_PAD_GPMI_CE2N__CAN1_TX,
  90         MX28_PAD_GPMI_CE3N__CAN1_RX,
  91         /* transceiver power control */
  92         MX28_PAD_SSP1_CMD__GPIO_2_13,
  93
  94         /* mxsfb (lcdif) */
  95         MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
  96         MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
  97         MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
  98         MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
  99         MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
 100         MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
 101         MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
 102         MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
 103         MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
 104         MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
 105         MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
 106         MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
 107         MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
 108         MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
 109         MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
 110         MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
 111         MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
 112         MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
 113         MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
 114         MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
 115         MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
 116         MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
 117         MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
 118         MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
 119         MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
 120         MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
 121         MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
 122         MX28_PAD_LCD_CS__LCD_ENABLE | MXS_PAD_CTRL,
 123         /* LCD panel enable */
 124         MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
 125         /* backlight control */
 126         MX28_PAD_PWM2__GPIO_3_18 | MXS_PAD_CTRL,
 127         /* mmc0 */
 128         MX28_PAD_SSP0_DATA0__SSP0_D0 |
 129                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 130         MX28_PAD_SSP0_DATA1__SSP0_D1 |
 131                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 132         MX28_PAD_SSP0_DATA2__SSP0_D2 |
 133                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 134         MX28_PAD_SSP0_DATA3__SSP0_D3 |
 135                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 136         MX28_PAD_SSP0_DATA4__SSP0_D4 |
 137                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 138         MX28_PAD_SSP0_DATA5__SSP0_D5 |
 139                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 140         MX28_PAD_SSP0_DATA6__SSP0_D6 |
 141                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 142         MX28_PAD_SSP0_DATA7__SSP0_D7 |
 143                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 144         MX28_PAD_SSP0_CMD__SSP0_CMD |
 145                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 146         MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
 147                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 148         MX28_PAD_SSP0_SCK__SSP0_SCK |
 149                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 150         /* write protect */
 151         MX28_PAD_SSP1_SCK__GPIO_2_12 |
 152                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 153         /* slot power enable */
 154         MX28_PAD_PWM3__GPIO_3_28 |
 155                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 156
 157         /* mmc1 */
 158         MX28_PAD_GPMI_D00__SSP1_D0 |
 159                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 160         MX28_PAD_GPMI_D01__SSP1_D1 |
 161                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 162         MX28_PAD_GPMI_D02__SSP1_D2 |
 163                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 164         MX28_PAD_GPMI_D03__SSP1_D3 |
 165                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 166         MX28_PAD_GPMI_D04__SSP1_D4 |
 167                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 168         MX28_PAD_GPMI_D05__SSP1_D5 |
 169                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 170         MX28_PAD_GPMI_D06__SSP1_D6 |
 171                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 172         MX28_PAD_GPMI_D07__SSP1_D7 |
 173                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 174         MX28_PAD_GPMI_RDY1__SSP1_CMD |
 175                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 176         MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT |
 177                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 178         MX28_PAD_GPMI_WRN__SSP1_SCK |
 179                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 180         /* write protect */
 181         MX28_PAD_GPMI_RESETN__GPIO_0_28 |
 182                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 183         /* slot power enable */
 184         MX28_PAD_PWM4__GPIO_3_29 |
 185                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 186
 187         /* led */
 188         MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL,
 189
 190         /* I2C */
 191         MX28_PAD_I2C0_SCL__I2C0_SCL |
 192                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 193         MX28_PAD_I2C0_SDA__I2C0_SDA |
 194                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 195
 196         /* saif0 & saif1 */
 197         MX28_PAD_SAIF0_MCLK__SAIF0_MCLK |
 198                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 199         MX28_PAD_SAIF0_LRCLK__SAIF0_LRCLK |
 200                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 201         MX28_PAD_SAIF0_BITCLK__SAIF0_BITCLK |
 202                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 203         MX28_PAD_SAIF0_SDATA0__SAIF0_SDATA0 |
 204                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 205         MX28_PAD_SAIF1_SDATA0__SAIF1_SDATA0 |
 206                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 207 };
 208
 209 /* led */
 210 static const struct gpio_led mx28evk_leds[] __initconst = {
 211         {
 212                 .name = "GPIO-LED",
 213                 .default_trigger = "heartbeat",
 214                 .gpio = MX28EVK_GPIO_LED,
 215         },
 216 };
 217
 218 static const struct gpio_led_platform_data mx28evk_led_data __initconst = {
 219         .leds = mx28evk_leds,
 220         .num_leds = ARRAY_SIZE(mx28evk_leds),
 221 };
 222
 223 /* fec */
 224 static void __init mx28evk_fec_reset(void)
 225 {
 226         int ret;
 227         struct clk *clk;
 228
 229         /* Enable fec phy clock */
 230         clk = clk_get_sys("pll2", NULL);
 231         if (!IS_ERR(clk))
 232                 clk_prepare_enable(clk);
 233
 234         /* Power up fec phy */
 235         ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
 236         if (ret) {
 237                 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
 238                 return;
 239         }
 240
 241         ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
 242         if (ret) {
 243                 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
 244                 return;
 245         }
 246
 247         /* Reset fec phy */
 248         ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
 249         if (ret) {
 250                 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
 251                 return;
 252         }
 253
 254         gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
 255         if (ret) {
 256                 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
 257                 return;
 258         }
 259
 260         mdelay(1);
 261         gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
 262 }
 263
 264 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
 265         {
 266                 /* fec0 */
 267                 .phy = PHY_INTERFACE_MODE_RMII,
 268         }, {
 269                 /* fec1 */
 270                 .phy = PHY_INTERFACE_MODE_RMII,
 271         },
 272 };
 273
 274 static int __init mx28evk_fec_get_mac(void)
 275 {
 276         int i;
 277         u32 val;
 278         const u32 *ocotp = mxs_get_ocotp();
 279
 280         if (!ocotp)
 281                 return -ETIMEDOUT;
 282
 283         /*
 284          * OCOTP only stores the last 4 octets for each mac address,
 285          * so hard-code Freescale OUI (00:04:9f) here.
 286          */
 287         for (i = 0; i < 2; i++) {
 288                 val = ocotp[i * 4];
 289                 mx28_fec_pdata[i].mac[0] = 0x00;
 290                 mx28_fec_pdata[i].mac[1] = 0x04;
 291                 mx28_fec_pdata[i].mac[2] = 0x9f;
 292                 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
 293                 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
 294                 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
 295         }
 296
 297         return 0;
 298 }
 299
 300 /*
 301  * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
 302  */
 303 static int flexcan0_en, flexcan1_en;
 304
 305 static void mx28evk_flexcan_switch(void)
 306 {
 307         if (flexcan0_en || flexcan1_en)
 308                 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
 309         else
 310                 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
 311 }
 312
 313 static void mx28evk_flexcan0_switch(int enable)
 314 {
 315         flexcan0_en = enable;
 316         mx28evk_flexcan_switch();
 317 }
 318
 319 static void mx28evk_flexcan1_switch(int enable)
 320 {
 321         flexcan1_en = enable;
 322         mx28evk_flexcan_switch();
 323 }
 324
 325 static const struct flexcan_platform_data
 326                 mx28evk_flexcan_pdata[] __initconst = {
 327         {
 328                 .transceiver_switch = mx28evk_flexcan0_switch,
 329         }, {
 330                 .transceiver_switch = mx28evk_flexcan1_switch,
 331         }
 332 };
 333
 334 /* mxsfb (lcdif) */
 335 static struct fb_videomode mx28evk_video_modes[] = {
 336         {
 337                 .name           = "Seiko-43WVF1G",
 338                 .refresh        = 60,
 339                 .xres           = 800,
 340                 .yres           = 480,
 341                 .pixclock       = 29851, /* picosecond (33.5 MHz) */
 342                 .left_margin    = 89,
 343                 .right_margin   = 164,
 344                 .upper_margin   = 23,
 345                 .lower_margin   = 10,
 346                 .hsync_len      = 10,
 347                 .vsync_len      = 10,
 348                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
 349                                   FB_SYNC_DOTCLK_FAILING_ACT,
 350         },
 351 };
 352
 353 static const struct mxsfb_platform_data mx28evk_mxsfb_pdata __initconst = {
 354         .mode_list      = mx28evk_video_modes,
 355         .mode_count     = ARRAY_SIZE(mx28evk_video_modes),
 356         .default_bpp    = 32,
 357         .ld_intf_width  = STMLCDIF_24BIT,
 358 };
 359
 360 static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = {
 361         {
 362                 /* mmc0 */
 363                 .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT,
 364                 .flags = SLOTF_8_BIT_CAPABLE,
 365         }, {
 366                 /* mmc1 */
 367                 .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT,
 368                 .flags = SLOTF_8_BIT_CAPABLE,
 369         },
 370 };
 371
 372 static struct i2c_board_info mxs_i2c0_board_info[] __initdata = {
 373         {
 374                 I2C_BOARD_INFO("sgtl5000", 0x0a),
 375         },
 376 };
 377
 378 #if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
 379 static struct regulator_consumer_supply mx28evk_audio_consumer_supplies[] = {
 380         REGULATOR_SUPPLY("VDDA", "0-000a"),
 381         REGULATOR_SUPPLY("VDDIO", "0-000a"),
 382 };
 383
 384 static struct regulator_init_data mx28evk_vdd_reg_init_data = {
 385         .constraints    = {
 386                 .name   = "3V3",
 387                 .always_on = 1,
 388         },
 389         .consumer_supplies = mx28evk_audio_consumer_supplies,
 390         .num_consumer_supplies = ARRAY_SIZE(mx28evk_audio_consumer_supplies),
 391 };
 392
 393 static struct fixed_voltage_config mx28evk_vdd_pdata = {
 394         .supply_name    = "board-3V3",
 395         .microvolts     = 3300000,
 396         .gpio           = -EINVAL,
 397         .enabled_at_boot = 1,
 398         .init_data      = &mx28evk_vdd_reg_init_data,
 399 };
 400 static struct platform_device mx28evk_voltage_regulator = {
 401         .name           = "reg-fixed-voltage",
 402         .id             = -1,
 403         .num_resources  = 0,
 404         .dev            = {
 405                 .platform_data  = &mx28evk_vdd_pdata,
 406         },
 407 };
 408 static void __init mx28evk_add_regulators(void)
 409 {
 410         platform_device_register(&mx28evk_voltage_regulator);
 411 }
 412 #else
 413 static void __init mx28evk_add_regulators(void) {}
 414 #endif
 415
 416 static struct gpio mx28evk_lcd_gpios[] = {
 417         { MX28EVK_LCD_ENABLE, GPIOF_OUT_INIT_HIGH, "lcd-enable" },
 418         { MX28EVK_BL_ENABLE, GPIOF_OUT_INIT_HIGH, "bl-enable" },
 419 };
 420
 421 static const struct mxs_saif_platform_data
 422                         mx28evk_mxs_saif_pdata[] __initconst = {
 423         /* working on EXTMSTR0 mode (saif0 master, saif1 slave) */
 424         {
 425                 .master_mode = 1,
 426                 .master_id = 0,
 427         }, {
 428                 .master_mode = 0,
 429                 .master_id = 0,
 430         },
 431 };
 432
 433 static void __init mx28evk_init(void)
 434 {
 435         int ret;
 436
 437         mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
 438
 439         mx28_add_duart();
 440         mx28_add_auart0();
 441         mx28_add_auart3();
 442
 443         if (mx28evk_fec_get_mac())
 444                 pr_warn("%s: failed on fec mac setup\n", __func__);
 445
 446         mx28evk_fec_reset();
 447         mx28_add_fec(0, &mx28_fec_pdata[0]);
 448         mx28_add_fec(1, &mx28_fec_pdata[1]);
 449
 450         ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
 451                                 "flexcan-switch");
 452         if (ret) {
 453                 pr_err("failed to request gpio flexcan-switch: %d\n", ret);
 454         } else {
 455                 mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]);
 456                 mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]);
 457         }
 458
 459         ret = gpio_request_array(mx28evk_lcd_gpios,
 460                                  ARRAY_SIZE(mx28evk_lcd_gpios));
 461         if (ret)
 462                 pr_warn("failed to request gpio pins for lcd: %d\n", ret);
 463         else
 464                 mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
 465
 466         mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0);
 467         mx28_add_saif(0, &mx28evk_mxs_saif_pdata[0]);
 468         mx28_add_saif(1, &mx28evk_mxs_saif_pdata[1]);
 469
 470         mx28_add_mxs_i2c(0);
 471         i2c_register_board_info(0, mxs_i2c0_board_info,
 472                                 ARRAY_SIZE(mxs_i2c0_board_info));
 473
 474         mx28evk_add_regulators();
 475
 476         mxs_add_platform_device("mxs-sgtl5000", 0, NULL, 0,
 477                         NULL, 0);
 478
 479         /* power on mmc slot by writing 0 to the gpio */
 480         ret = gpio_request_one(MX28EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 481                                "mmc0-slot-power");
 482         if (ret)
 483                 pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
 484         else
 485                 mx28_add_mxs_mmc(0, &mx28evk_mmc_pdata[0]);
 486
 487         ret = gpio_request_one(MX28EVK_MMC1_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 488                                "mmc1-slot-power");
 489         if (ret)
 490                 pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
 491         else
 492                 mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
 493
 494         mx28_add_rtc_stmp3xxx();
 495
 496         gpio_led_register_device(0, &mx28evk_led_data);
 497 }
 498
 499 static void __init mx28evk_timer_init(void)
 500 {
 501         mx28_clocks_init();
 502 }
 503
 504 static struct sys_timer mx28evk_timer = {
 505         .init   = mx28evk_timer_init,
 506 };
 507
 508 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
 509         /* Maintainer: Freescale Semiconductor, Inc. */
 510         .map_io         = mx28_map_io,
 511         .init_irq       = mx28_init_irq,
 512         .timer          = &mx28evk_timer,
 513         .init_machine   = mx28evk_init,
 514         .restart        = mxs_restart,
 515 MACHINE_END