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