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/irq.h>
  20 #include <linux/clk.h>
  21
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/time.h>
  25
  26 #include <mach/common.h>
  27 #include <mach/iomux-mx28.h>
  28
  29 #include "devices-mx28.h"
  30
  31 #define MX28EVK_FLEXCAN_SWITCH  MXS_GPIO_NR(2, 13)
  32 #define MX28EVK_FEC_PHY_POWER   MXS_GPIO_NR(2, 15)
  33 #define MX28EVK_GPIO_LED        MXS_GPIO_NR(3, 5)
  34 #define MX28EVK_BL_ENABLE       MXS_GPIO_NR(3, 18)
  35 #define MX28EVK_LCD_ENABLE      MXS_GPIO_NR(3, 30)
  36 #define MX28EVK_FEC_PHY_RESET   MXS_GPIO_NR(4, 13)
  37
  38 #define MX28EVK_MMC0_WRITE_PROTECT      MXS_GPIO_NR(2, 12)
  39 #define MX28EVK_MMC1_WRITE_PROTECT      MXS_GPIO_NR(0, 28)
  40 #define MX28EVK_MMC0_SLOT_POWER         MXS_GPIO_NR(3, 28)
  41 #define MX28EVK_MMC1_SLOT_POWER         MXS_GPIO_NR(3, 29)
  42
  43 static const iomux_cfg_t mx28evk_pads[] __initconst = {
  44         /* duart */
  45         MX28_PAD_PWM0__DUART_RX | MXS_PAD_CTRL,
  46         MX28_PAD_PWM1__DUART_TX | MXS_PAD_CTRL,
  47
  48         /* auart0 */
  49         MX28_PAD_AUART0_RX__AUART0_RX | MXS_PAD_CTRL,
  50         MX28_PAD_AUART0_TX__AUART0_TX | MXS_PAD_CTRL,
  51         MX28_PAD_AUART0_CTS__AUART0_CTS | MXS_PAD_CTRL,
  52         MX28_PAD_AUART0_RTS__AUART0_RTS | MXS_PAD_CTRL,
  53         /* auart3 */
  54         MX28_PAD_AUART3_RX__AUART3_RX | MXS_PAD_CTRL,
  55         MX28_PAD_AUART3_TX__AUART3_TX | MXS_PAD_CTRL,
  56         MX28_PAD_AUART3_CTS__AUART3_CTS | MXS_PAD_CTRL,
  57         MX28_PAD_AUART3_RTS__AUART3_RTS | MXS_PAD_CTRL,
  58
  59 #define MXS_PAD_FEC     (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP)
  60         /* fec0 */
  61         MX28_PAD_ENET0_MDC__ENET0_MDC | MXS_PAD_FEC,
  62         MX28_PAD_ENET0_MDIO__ENET0_MDIO | MXS_PAD_FEC,
  63         MX28_PAD_ENET0_RX_EN__ENET0_RX_EN | MXS_PAD_FEC,
  64         MX28_PAD_ENET0_RXD0__ENET0_RXD0 | MXS_PAD_FEC,
  65         MX28_PAD_ENET0_RXD1__ENET0_RXD1 | MXS_PAD_FEC,
  66         MX28_PAD_ENET0_TX_EN__ENET0_TX_EN | MXS_PAD_FEC,
  67         MX28_PAD_ENET0_TXD0__ENET0_TXD0 | MXS_PAD_FEC,
  68         MX28_PAD_ENET0_TXD1__ENET0_TXD1 | MXS_PAD_FEC,
  69         MX28_PAD_ENET_CLK__CLKCTRL_ENET | MXS_PAD_FEC,
  70         /* fec1 */
  71         MX28_PAD_ENET0_CRS__ENET1_RX_EN | MXS_PAD_FEC,
  72         MX28_PAD_ENET0_RXD2__ENET1_RXD0 | MXS_PAD_FEC,
  73         MX28_PAD_ENET0_RXD3__ENET1_RXD1 | MXS_PAD_FEC,
  74         MX28_PAD_ENET0_COL__ENET1_TX_EN | MXS_PAD_FEC,
  75         MX28_PAD_ENET0_TXD2__ENET1_TXD0 | MXS_PAD_FEC,
  76         MX28_PAD_ENET0_TXD3__ENET1_TXD1 | MXS_PAD_FEC,
  77         /* phy power line */
  78         MX28_PAD_SSP1_DATA3__GPIO_2_15 | MXS_PAD_CTRL,
  79         /* phy reset line */
  80         MX28_PAD_ENET0_RX_CLK__GPIO_4_13 | MXS_PAD_CTRL,
  81
  82         /* flexcan0 */
  83         MX28_PAD_GPMI_RDY2__CAN0_TX,
  84         MX28_PAD_GPMI_RDY3__CAN0_RX,
  85         /* flexcan1 */
  86         MX28_PAD_GPMI_CE2N__CAN1_TX,
  87         MX28_PAD_GPMI_CE3N__CAN1_RX,
  88         /* transceiver power control */
  89         MX28_PAD_SSP1_CMD__GPIO_2_13,
  90
  91         /* mxsfb (lcdif) */
  92         MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
  93         MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
  94         MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
  95         MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
  96         MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
  97         MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
  98         MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
  99         MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
 100         MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
 101         MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
 102         MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
 103         MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
 104         MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
 105         MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
 106         MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
 107         MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
 108         MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
 109         MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
 110         MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
 111         MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
 112         MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
 113         MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
 114         MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
 115         MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
 116         MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
 117         MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
 118         MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
 119         MX28_PAD_LCD_CS__LCD_ENABLE | MXS_PAD_CTRL,
 120         /* LCD panel enable */
 121         MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
 122         /* backlight control */
 123         MX28_PAD_PWM2__GPIO_3_18 | MXS_PAD_CTRL,
 124         /* mmc0 */
 125         MX28_PAD_SSP0_DATA0__SSP0_D0 |
 126                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 127         MX28_PAD_SSP0_DATA1__SSP0_D1 |
 128                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 129         MX28_PAD_SSP0_DATA2__SSP0_D2 |
 130                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 131         MX28_PAD_SSP0_DATA3__SSP0_D3 |
 132                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 133         MX28_PAD_SSP0_DATA4__SSP0_D4 |
 134                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 135         MX28_PAD_SSP0_DATA5__SSP0_D5 |
 136                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 137         MX28_PAD_SSP0_DATA6__SSP0_D6 |
 138                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 139         MX28_PAD_SSP0_DATA7__SSP0_D7 |
 140                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 141         MX28_PAD_SSP0_CMD__SSP0_CMD |
 142                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 143         MX28_PAD_SSP0_DETECT__SSP0_CARD_DETECT |
 144                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 145         MX28_PAD_SSP0_SCK__SSP0_SCK |
 146                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 147         /* write protect */
 148         MX28_PAD_SSP1_SCK__GPIO_2_12 |
 149                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 150         /* slot power enable */
 151         MX28_PAD_PWM3__GPIO_3_28 |
 152                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 153
 154         /* mmc1 */
 155         MX28_PAD_GPMI_D00__SSP1_D0 |
 156                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 157         MX28_PAD_GPMI_D01__SSP1_D1 |
 158                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 159         MX28_PAD_GPMI_D02__SSP1_D2 |
 160                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 161         MX28_PAD_GPMI_D03__SSP1_D3 |
 162                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 163         MX28_PAD_GPMI_D04__SSP1_D4 |
 164                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 165         MX28_PAD_GPMI_D05__SSP1_D5 |
 166                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 167         MX28_PAD_GPMI_D06__SSP1_D6 |
 168                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 169         MX28_PAD_GPMI_D07__SSP1_D7 |
 170                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 171         MX28_PAD_GPMI_RDY1__SSP1_CMD |
 172                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_PULLUP),
 173         MX28_PAD_GPMI_RDY0__SSP1_CARD_DETECT |
 174                 (MXS_PAD_8MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 175         MX28_PAD_GPMI_WRN__SSP1_SCK |
 176                 (MXS_PAD_12MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 177         /* write protect */
 178         MX28_PAD_GPMI_RESETN__GPIO_0_28 |
 179                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 180         /* slot power enable */
 181         MX28_PAD_PWM4__GPIO_3_29 |
 182                 (MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL),
 183
 184         /* led */
 185         MX28_PAD_AUART1_TX__GPIO_3_5 | MXS_PAD_CTRL,
 186 };
 187
 188 /* led */
 189 static const struct gpio_led mx28evk_leds[] __initconst = {
 190         {
 191                 .name = "GPIO-LED",
 192                 .default_trigger = "heartbeat",
 193                 .gpio = MX28EVK_GPIO_LED,
 194         },
 195 };
 196
 197 static const struct gpio_led_platform_data mx28evk_led_data __initconst = {
 198         .leds = mx28evk_leds,
 199         .num_leds = ARRAY_SIZE(mx28evk_leds),
 200 };
 201
 202 /* fec */
 203 static void __init mx28evk_fec_reset(void)
 204 {
 205         int ret;
 206         struct clk *clk;
 207
 208         /* Enable fec phy clock */
 209         clk = clk_get_sys("pll2", NULL);
 210         if (!IS_ERR(clk))
 211                 clk_enable(clk);
 212
 213         /* Power up fec phy */
 214         ret = gpio_request(MX28EVK_FEC_PHY_POWER, "fec-phy-power");
 215         if (ret) {
 216                 pr_err("Failed to request gpio fec-phy-%s: %d\n", "power", ret);
 217                 return;
 218         }
 219
 220         ret = gpio_direction_output(MX28EVK_FEC_PHY_POWER, 0);
 221         if (ret) {
 222                 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "power", ret);
 223                 return;
 224         }
 225
 226         /* Reset fec phy */
 227         ret = gpio_request(MX28EVK_FEC_PHY_RESET, "fec-phy-reset");
 228         if (ret) {
 229                 pr_err("Failed to request gpio fec-phy-%s: %d\n", "reset", ret);
 230                 return;
 231         }
 232
 233         gpio_direction_output(MX28EVK_FEC_PHY_RESET, 0);
 234         if (ret) {
 235                 pr_err("Failed to drive gpio fec-phy-%s: %d\n", "reset", ret);
 236                 return;
 237         }
 238
 239         mdelay(1);
 240         gpio_set_value(MX28EVK_FEC_PHY_RESET, 1);
 241 }
 242
 243 static struct fec_platform_data mx28_fec_pdata[] __initdata = {
 244         {
 245                 /* fec0 */
 246                 .phy = PHY_INTERFACE_MODE_RMII,
 247         }, {
 248                 /* fec1 */
 249                 .phy = PHY_INTERFACE_MODE_RMII,
 250         },
 251 };
 252
 253 static int __init mx28evk_fec_get_mac(void)
 254 {
 255         int i;
 256         u32 val;
 257         const u32 *ocotp = mxs_get_ocotp();
 258
 259         if (!ocotp)
 260                 goto error;
 261
 262         /*
 263          * OCOTP only stores the last 4 octets for each mac address,
 264          * so hard-code Freescale OUI (00:04:9f) here.
 265          */
 266         for (i = 0; i < 2; i++) {
 267                 val = ocotp[i * 4];
 268                 mx28_fec_pdata[i].mac[0] = 0x00;
 269                 mx28_fec_pdata[i].mac[1] = 0x04;
 270                 mx28_fec_pdata[i].mac[2] = 0x9f;
 271                 mx28_fec_pdata[i].mac[3] = (val >> 16) & 0xff;
 272                 mx28_fec_pdata[i].mac[4] = (val >> 8) & 0xff;
 273                 mx28_fec_pdata[i].mac[5] = (val >> 0) & 0xff;
 274         }
 275
 276         return 0;
 277
 278 error:
 279         pr_err("%s: timeout when reading fec mac from OCOTP\n", __func__);
 280         return -ETIMEDOUT;
 281 }
 282
 283 /*
 284  * MX28EVK_FLEXCAN_SWITCH is shared between both flexcan controllers
 285  */
 286 static int flexcan0_en, flexcan1_en;
 287
 288 static void mx28evk_flexcan_switch(void)
 289 {
 290         if (flexcan0_en || flexcan1_en)
 291                 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 1);
 292         else
 293                 gpio_set_value(MX28EVK_FLEXCAN_SWITCH, 0);
 294 }
 295
 296 static void mx28evk_flexcan0_switch(int enable)
 297 {
 298         flexcan0_en = enable;
 299         mx28evk_flexcan_switch();
 300 }
 301
 302 static void mx28evk_flexcan1_switch(int enable)
 303 {
 304         flexcan1_en = enable;
 305         mx28evk_flexcan_switch();
 306 }
 307
 308 static const struct flexcan_platform_data
 309                 mx28evk_flexcan_pdata[] __initconst = {
 310         {
 311                 .transceiver_switch = mx28evk_flexcan0_switch,
 312         }, {
 313                 .transceiver_switch = mx28evk_flexcan1_switch,
 314         }
 315 };
 316
 317 /* mxsfb (lcdif) */
 318 static struct fb_videomode mx28evk_video_modes[] = {
 319         {
 320                 .name           = "Seiko-43WVF1G",
 321                 .refresh        = 60,
 322                 .xres           = 800,
 323                 .yres           = 480,
 324                 .pixclock       = 29851, /* picosecond (33.5 MHz) */
 325                 .left_margin    = 89,
 326                 .right_margin   = 164,
 327                 .upper_margin   = 23,
 328                 .lower_margin   = 10,
 329                 .hsync_len      = 10,
 330                 .vsync_len      = 10,
 331                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT |
 332                                   FB_SYNC_DOTCLK_FAILING_ACT,
 333         },
 334 };
 335
 336 static const struct mxsfb_platform_data mx28evk_mxsfb_pdata __initconst = {
 337         .mode_list      = mx28evk_video_modes,
 338         .mode_count     = ARRAY_SIZE(mx28evk_video_modes),
 339         .default_bpp    = 32,
 340         .ld_intf_width  = STMLCDIF_24BIT,
 341 };
 342
 343 static struct mxs_mmc_platform_data mx28evk_mmc_pdata[] __initdata = {
 344         {
 345                 /* mmc0 */
 346                 .wp_gpio = MX28EVK_MMC0_WRITE_PROTECT,
 347                 .flags = SLOTF_8_BIT_CAPABLE,
 348         }, {
 349                 /* mmc1 */
 350                 .wp_gpio = MX28EVK_MMC1_WRITE_PROTECT,
 351                 .flags = SLOTF_8_BIT_CAPABLE,
 352         },
 353 };
 354
 355 static void __init mx28evk_init(void)
 356 {
 357         int ret;
 358
 359         mxs_iomux_setup_multiple_pads(mx28evk_pads, ARRAY_SIZE(mx28evk_pads));
 360
 361         mx28_add_duart();
 362         mx28_add_auart0();
 363         mx28_add_auart3();
 364
 365         if (mx28evk_fec_get_mac())
 366                 pr_warn("%s: failed on fec mac setup\n", __func__);
 367
 368         mx28evk_fec_reset();
 369         mx28_add_fec(0, &mx28_fec_pdata[0]);
 370         mx28_add_fec(1, &mx28_fec_pdata[1]);
 371
 372         ret = gpio_request_one(MX28EVK_FLEXCAN_SWITCH, GPIOF_DIR_OUT,
 373                                 "flexcan-switch");
 374         if (ret) {
 375                 pr_err("failed to request gpio flexcan-switch: %d\n", ret);
 376         } else {
 377                 mx28_add_flexcan(0, &mx28evk_flexcan_pdata[0]);
 378                 mx28_add_flexcan(1, &mx28evk_flexcan_pdata[1]);
 379         }
 380
 381         ret = gpio_request_one(MX28EVK_LCD_ENABLE, GPIOF_DIR_OUT, "lcd-enable");
 382         if (ret)
 383                 pr_warn("failed to request gpio lcd-enable: %d\n", ret);
 384         else
 385                 gpio_set_value(MX28EVK_LCD_ENABLE, 1);
 386
 387         ret = gpio_request_one(MX28EVK_BL_ENABLE, GPIOF_DIR_OUT, "bl-enable");
 388         if (ret)
 389                 pr_warn("failed to request gpio bl-enable: %d\n", ret);
 390         else
 391                 gpio_set_value(MX28EVK_BL_ENABLE, 1);
 392
 393         mx28_add_mxsfb(&mx28evk_mxsfb_pdata);
 394
 395         /* power on mmc slot by writing 0 to the gpio */
 396         ret = gpio_request_one(MX28EVK_MMC0_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 397                                "mmc0-slot-power");
 398         if (ret)
 399                 pr_warn("failed to request gpio mmc0-slot-power: %d\n", ret);
 400         mx28_add_mxs_mmc(0, &mx28evk_mmc_pdata[0]);
 401
 402         ret = gpio_request_one(MX28EVK_MMC1_SLOT_POWER, GPIOF_OUT_INIT_LOW,
 403                                "mmc1-slot-power");
 404         if (ret)
 405                 pr_warn("failed to request gpio mmc1-slot-power: %d\n", ret);
 406         mx28_add_mxs_mmc(1, &mx28evk_mmc_pdata[1]);
 407
 408         gpio_led_register_device(0, &mx28evk_led_data);
 409 }
 410
 411 static void __init mx28evk_timer_init(void)
 412 {
 413         mx28_clocks_init();
 414 }
 415
 416 static struct sys_timer mx28evk_timer = {
 417         .init   = mx28evk_timer_init,
 418 };
 419
 420 MACHINE_START(MX28EVK, "Freescale MX28 EVK")
 421         /* Maintainer: Freescale Semiconductor, Inc. */
 422         .map_io         = mx28_map_io,
 423         .init_irq       = mx28_init_irq,
 424         .init_machine   = mx28evk_init,
 425         .timer          = &mx28evk_timer,
 426 MACHINE_END