board/karo/tx28/tx28.c

   1 /*
   2  * Copyright (C) 2011 Lothar Waßmann <LW@KARO-electronics.de>
   3  * based on: board/freesclae/mx28_evk.c (C) 2010 Freescale Semiconductor, Inc.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <errno.h>
  26 #include <libfdt.h>
  27 #include <fdt_support.h>
  28 #include <lcd.h>
  29 #include <netdev.h>
  30 #include <mmc.h>
  31 #include <imx_ssp_mmc.h>
  32 #include <linux/list.h>
  33 #include <linux/fb.h>
  34 #include <asm/io.h>
  35 #include <asm/gpio.h>
  36 #include <asm/arch/iomux-mx28.h>
  37 #include <asm/arch/clock.h>
  38 #include <asm/arch/mxsfb.h>
  39 #include <asm/arch/imx-regs.h>
  40 #include <asm/arch/sys_proto.h>
  41
  42 #include "../common/karo.h"
  43
  44 DECLARE_GLOBAL_DATA_PTR;
  45
  46 #define MXS_GPIO_NR(p, o)      (((p) << 5) | (o))
  47
  48 #define TX28_LCD_PWR_GPIO       MX28_PAD_LCD_ENABLE__GPIO_1_31
  49 #define TX28_LCD_RST_GPIO       MX28_PAD_LCD_RESET__GPIO_3_30
  50 #define TX28_LCD_BACKLIGHT_GPIO MX28_PAD_PWM0__GPIO_3_16
  51
  52 #define TX28_USBH_VBUSEN_GPIO   MX28_PAD_SPDIF__GPIO_3_27
  53 #define TX28_USBH_OC_GPIO       MX28_PAD_JTAG_RTCK__GPIO_4_20
  54 #define TX28_USBOTG_VBUSEN_GPIO MX28_PAD_GPMI_CE2N__GPIO_0_18
  55 #define TX28_USBOTG_OC_GPIO     MX28_PAD_GPMI_CE3N__GPIO_0_19
  56 #define TX28_USBOTG_ID_GPIO     MX28_PAD_PWM2__GPIO_3_18
  57
  58 #define TX28_LED_GPIO           MX28_PAD_ENET0_RXD3__GPIO_4_10
  59
  60 static const struct gpio tx28_gpios[] = {
  61         { TX28_USBH_VBUSEN_GPIO, GPIOF_OUTPUT_INIT_LOW, "USBH VBUSEN", },
  62         { TX28_USBH_OC_GPIO, GPIOF_INPUT, "USBH OC", },
  63         { TX28_USBOTG_VBUSEN_GPIO, GPIOF_OUTPUT_INIT_LOW, "USBOTG VBUSEN", },
  64         { TX28_USBOTG_OC_GPIO, GPIOF_INPUT, "USBOTG OC", },
  65         { TX28_USBOTG_ID_GPIO, GPIOF_INPUT, "USBOTG ID", },
  66 };
  67
  68 static const iomux_cfg_t tx28_pads[] = {
  69         /* UART pads */
  70 #if CONFIG_CONS_INDEX == 0
  71         MX28_PAD_AUART0_RX__DUART_CTS,
  72         MX28_PAD_AUART0_TX__DUART_RTS,
  73         MX28_PAD_AUART0_CTS__DUART_RX,
  74         MX28_PAD_AUART0_RTS__DUART_TX,
  75 #elif CONFIG_CONS_INDEX == 1
  76         MX28_PAD_AUART1_RX__AUART1_RX,
  77         MX28_PAD_AUART1_TX__AUART1_TX,
  78         MX28_PAD_AUART1_CTS__AUART1_CTS,
  79         MX28_PAD_AUART1_RTS__AUART1_RTS,
  80 #elif CONFIG_CONS_INDEX == 2
  81         MX28_PAD_AUART3_RX__AUART3_RX,
  82         MX28_PAD_AUART3_TX__AUART3_TX,
  83         MX28_PAD_AUART3_CTS__AUART3_CTS,
  84         MX28_PAD_AUART3_RTS__AUART3_RTS,
  85 #endif
  86         /* I2C bus for internal DS1339, PCA9554 and on DIMM pins 40/41 */
  87         MX28_PAD_I2C0_SCL__I2C0_SCL,
  88         MX28_PAD_I2C0_SDA__I2C0_SDA,
  89
  90         /* USBH VBUSEN, OC */
  91         MX28_PAD_SPDIF__GPIO_3_27,
  92         MX28_PAD_JTAG_RTCK__GPIO_4_20,
  93
  94         /* USBOTG VBUSEN, OC, ID */
  95         MX28_PAD_GPMI_CE2N__GPIO_0_18,
  96         MX28_PAD_GPMI_CE3N__GPIO_0_19,
  97         MX28_PAD_PWM2__GPIO_3_18,
  98 };
  99
 100 /*
 101  * Functions
 102  */
 103 int board_early_init_f(void)
 104 {
 105         /* IO0 clock at 480MHz */
 106         mx28_set_ioclk(MXC_IOCLK0, 480000);
 107         /* IO1 clock at 480MHz */
 108         mx28_set_ioclk(MXC_IOCLK1, 480000);
 109
 110         /* SSP0 clock at 96MHz */
 111         mx28_set_sspclk(MXC_SSPCLK0, 96000, 0);
 112         /* SSP2 clock at 96MHz */
 113         mx28_set_sspclk(MXC_SSPCLK2, 96000, 0);
 114
 115         gpio_request_array(tx28_gpios, ARRAY_SIZE(tx28_gpios));
 116         mxs_iomux_setup_multiple_pads(tx28_pads, ARRAY_SIZE(tx28_pads));
 117         return 0;
 118 }
 119
 120 int board_init(void)
 121 {
 122         /* Address of boot parameters */
 123         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x1000;
 124         return 0;
 125 }
 126
 127 int dram_init(void)
 128 {
 129         return mxs_dram_init();
 130 }
 131
 132 #ifdef  CONFIG_CMD_MMC
 133 static int tx28_mmc_wp(int dev_no)
 134 {
 135         return 0;
 136 }
 137
 138 int board_mmc_init(bd_t *bis)
 139 {
 140         return mxsmmc_initialize(bis, 0, tx28_mmc_wp);
 141 }
 142 #endif /* CONFIG_CMD_MMC */
 143
 144 #ifdef CONFIG_FEC_MXC
 145 #ifdef CONFIG_GET_FEC_MAC_ADDR_FROM_IIM
 146
 147 #ifdef CONFIG_FEC_MXC_MULTI
 148 #define FEC_MAX_IDX                     1
 149 #else
 150 #define FEC_MAX_IDX                     0
 151 #endif
 152
 153 static int fec_get_mac_addr(int index)
 154 {
 155         u32 val1, val2;
 156         int timeout = 1000;
 157         struct mxs_ocotp_regs *ocotp_regs =
 158                 (struct mxs_ocotp_regs *)MXS_OCOTP_BASE;
 159         u32 *cust = &ocotp_regs->hw_ocotp_cust0;
 160         char mac[6 * 3];
 161         char env_name[] = "eth.addr";
 162
 163         if (index < 0 || index > FEC_MAX_IDX)
 164                 return -EINVAL;
 165
 166         /* set this bit to open the OTP banks for reading */
 167         writel(OCOTP_CTRL_RD_BANK_OPEN,
 168                 &ocotp_regs->hw_ocotp_ctrl_set);
 169
 170         /* wait until OTP contents are readable */
 171         while (OCOTP_CTRL_BUSY & readl(&ocotp_regs->hw_ocotp_ctrl)) {
 172                 if (timeout-- < 0)
 173                         return -ETIMEDOUT;
 174                 udelay(100);
 175         }
 176
 177         val1 = readl(&cust[index * 8]);
 178         val2 = readl(&cust[index * 8 + 4]);
 179         if ((val1 | val2) == 0)
 180                 return 0;
 181         snprintf(mac, sizeof(mac), "%02x:%02x:%02x:%02x:%02x:%02x",
 182                 (val1 >> 24) & 0xFF, (val1 >> 16) & 0xFF,
 183                 (val1 >> 8) & 0xFF, (val1 >> 0) & 0xFF,
 184                 (val2 >> 24) & 0xFF, (val2 >> 16) & 0xFF);
 185         if (index == 0)
 186                 snprintf(env_name, sizeof(env_name), "ethaddr");
 187         else
 188                 snprintf(env_name, sizeof(env_name), "eth%daddr", index);
 189
 190         setenv(env_name, mac);
 191         return 0;
 192 }
 193 #endif /* CONFIG_GET_FEC_MAC_ADDR_FROM_IIM */
 194
 195 static const iomux_cfg_t tx28_fec_pads[] = {
 196         MX28_PAD_ENET0_RX_EN__ENET0_RX_EN,
 197         MX28_PAD_ENET0_RXD0__ENET0_RXD0,
 198         MX28_PAD_ENET0_RXD1__ENET0_RXD1,
 199 };
 200
 201 int board_eth_init(bd_t *bis)
 202 {
 203         int ret;
 204
 205         /* Reset the external phy */
 206         gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
 207
 208         /* Power on the external phy */
 209         gpio_direction_output(MX28_PAD_PWM4__GPIO_3_29, 1);
 210
 211         /* Pull strap pins to high */
 212         gpio_direction_output(MX28_PAD_ENET0_RX_EN__GPIO_4_2, 1);
 213         gpio_direction_output(MX28_PAD_ENET0_RXD0__GPIO_4_3, 1);
 214         gpio_direction_output(MX28_PAD_ENET0_RXD1__GPIO_4_4, 1);
 215         gpio_direction_input(MX28_PAD_ENET0_TX_CLK__GPIO_4_5);
 216
 217         udelay(25000);
 218         gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
 219         udelay(100);
 220
 221         mxs_iomux_setup_multiple_pads(tx28_fec_pads, ARRAY_SIZE(tx28_fec_pads));
 222
 223         ret = cpu_eth_init(bis);
 224         if (ret) {
 225                 printf("cpu_eth_init() failed: %d\n", ret);
 226                 return ret;
 227         }
 228
 229         ret = fec_get_mac_addr(0);
 230         if (ret < 0) {
 231                 printf("Failed to read FEC0 MAC address from OCOTP\n");
 232                 return ret;
 233         }
 234 #ifdef CONFIG_FEC_MXC_MULTI
 235         if (getenv("ethaddr")) {
 236                 ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
 237                 if (ret) {
 238                         printf("FEC MXS: Unable to init FEC0\n");
 239                         return ret;
 240                 }
 241         }
 242
 243         ret = fec_get_mac_addr(1);
 244         if (ret < 0) {
 245                 printf("Failed to read FEC1 MAC address from OCOTP\n");
 246                 return ret;
 247         }
 248         if (getenv("eth1addr")) {
 249                 ret = fecmxc_initialize_multi(bis, 1, 1, MXS_ENET1_BASE);
 250                 if (ret) {
 251                         printf("FEC MXS: Unable to init FEC1\n");
 252                         return ret;
 253                 }
 254         }
 255         return 0;
 256 #else
 257         if (getenv("ethaddr")) {
 258                 ret = fecmxc_initialize(bis);
 259         }
 260         return ret;
 261 #endif
 262 }
 263 #endif /* CONFIG_FEC_MXC */
 264
 265 enum {
 266         LED_STATE_INIT = -1,
 267         LED_STATE_OFF,
 268         LED_STATE_ON,
 269 };
 270
 271 void show_activity(int arg)
 272 {
 273         static int led_state = LED_STATE_INIT;
 274         static ulong last;
 275
 276         if (led_state == LED_STATE_INIT) {
 277                 last = get_timer(0);
 278                 gpio_set_value(TX28_LED_GPIO, 1);
 279                 led_state = LED_STATE_ON;
 280         } else {
 281                 if (get_timer(last) > CONFIG_SYS_HZ) {
 282                         last = get_timer(0);
 283                         if (led_state == LED_STATE_ON) {
 284                                 gpio_set_value(TX28_LED_GPIO, 0);
 285                         } else {
 286                                 gpio_set_value(TX28_LED_GPIO, 1);
 287                         }
 288                         led_state = 1 - led_state;
 289                 }
 290         }
 291 }
 292
 293 static const iomux_cfg_t stk5_pads[] = {
 294         /* SW controlled LED on STK5 baseboard */
 295         MX28_PAD_ENET0_RXD3__GPIO_4_10,
 296 };
 297
 298 static const struct gpio stk5_gpios[] = {
 299 };
 300
 301 #ifdef CONFIG_LCD
 302 static struct fb_videomode tx28_fb_modes[] = {
 303         {
 304                 /* Standard VGA timing */
 305                 .name           = "VGA",
 306                 .refresh        = 60,
 307                 .xres           = 640,
 308                 .yres           = 480,
 309                 .pixclock       = KHZ2PICOS(25175),
 310                 .left_margin    = 48,
 311                 .hsync_len      = 96,
 312                 .right_margin   = 16,
 313                 .upper_margin   = 31,
 314                 .vsync_len      = 2,
 315                 .lower_margin   = 12,
 316                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 317                 .vmode          = FB_VMODE_NONINTERLACED,
 318         },
 319         {
 320                 /* Emerging ETV570 640 x 480 display. Syncs low active,
 321                  * DE high active, 115.2 mm x 86.4 mm display area
 322                  * VGA compatible timing
 323                  */
 324                 .name           = "ETV570",
 325                 .refresh        = 60,
 326                 .xres           = 640,
 327                 .yres           = 480,
 328                 .pixclock       = KHZ2PICOS(25175),
 329                 .left_margin    = 114,
 330                 .hsync_len      = 30,
 331                 .right_margin   = 16,
 332                 .upper_margin   = 32,
 333                 .vsync_len      = 3,
 334                 .lower_margin   = 10,
 335                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 336                 .vmode          = FB_VMODE_NONINTERLACED,
 337         },
 338         {
 339                 /* Emerging ET0350G0DH6 320 x 240 display.
 340                  * 70.08 mm x 52.56 mm display area.
 341                  */
 342                 .name           = "ET0350",
 343                 .refresh        = 60,
 344                 .xres           = 320,
 345                 .yres           = 240,
 346                 .pixclock       = KHZ2PICOS(6500),
 347                 .left_margin    = 68 - 34,
 348                 .hsync_len      = 34,
 349                 .right_margin   = 20,
 350                 .upper_margin   = 18 - 3,
 351                 .vsync_len      = 3,
 352                 .lower_margin   = 4,
 353                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 354                 .vmode          = FB_VMODE_NONINTERLACED,
 355         },
 356         {
 357                 /* Emerging ET0430G0DH6 480 x 272 display.
 358                  * 95.04 mm x 53.856 mm display area.
 359                  */
 360                 .name           = "ET0430",
 361                 .refresh        = 60,
 362                 .xres           = 480,
 363                 .yres           = 272,
 364                 .pixclock       = KHZ2PICOS(9000),
 365                 .left_margin    = 2,
 366                 .hsync_len      = 41,
 367                 .right_margin   = 2,
 368                 .upper_margin   = 2,
 369                 .vsync_len      = 10,
 370                 .lower_margin   = 2,
 371                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 372                 .vmode          = FB_VMODE_NONINTERLACED,
 373         },
 374         {
 375                 /* Emerging ET0500G0DH6 800 x 480 display.
 376                  * 109.6 mm x 66.4 mm display area.
 377                  */
 378                 .name           = "ET0500",
 379                 .refresh        = 60,
 380                 .xres           = 800,
 381                 .yres           = 480,
 382                 .pixclock       = KHZ2PICOS(33260),
 383                 .left_margin    = 216 - 128,
 384                 .hsync_len      = 128,
 385                 .right_margin   = 1056 - 800 - 216,
 386                 .upper_margin   = 35 - 2,
 387                 .vsync_len      = 2,
 388                 .lower_margin   = 525 - 480 - 35,
 389                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 390                 .vmode          = FB_VMODE_NONINTERLACED,
 391         },
 392         {
 393                 /* Emerging ETQ570G0DH6 320 x 240 display.
 394                  * 115.2 mm x 86.4 mm display area.
 395                  */
 396                 .name           = "ETQ570",
 397                 .refresh        = 60,
 398                 .xres           = 320,
 399                 .yres           = 240,
 400                 .pixclock       = KHZ2PICOS(6400),
 401                 .left_margin    = 38,
 402                 .hsync_len      = 30,
 403                 .right_margin   = 30,
 404                 .upper_margin   = 16, /* 15 according to datasheet */
 405                 .vsync_len      = 3, /* TVP -> 1>x>5 */
 406                 .lower_margin   = 4, /* 4.5 according to datasheet */
 407                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 408                 .vmode          = FB_VMODE_NONINTERLACED,
 409         },
 410         {
 411                 /* Emerging ET0700G0DH6 800 x 480 display.
 412                  * 152.4 mm x 91.44 mm display area.
 413                  */
 414                 .name           = "ET0700",
 415                 .refresh        = 60,
 416                 .xres           = 800,
 417                 .yres           = 480,
 418                 .pixclock       = KHZ2PICOS(33260),
 419                 .left_margin    = 216 - 128,
 420                 .hsync_len      = 128,
 421                 .right_margin   = 1056 - 800 - 216,
 422                 .upper_margin   = 35 - 2,
 423                 .vsync_len      = 2,
 424                 .lower_margin   = 525 - 480 - 35,
 425                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 426                 .vmode          = FB_VMODE_NONINTERLACED,
 427         },
 428         {
 429                 /* unnamed entry for assigning parameters parsed from 'video_mode' string */
 430                 .sync           = FB_SYNC_DATA_ENABLE_HIGH_ACT,
 431                 .vmode          = FB_VMODE_NONINTERLACED,
 432         },
 433 };
 434
 435 static int lcd_enabled = 1;
 436
 437 void lcd_enable(void)
 438 {
 439         /* HACK ALERT:
 440          * global variable from common/lcd.c
 441          * Set to 0 here to prevent messages from going to LCD
 442          * rather than serial console
 443          */
 444         lcd_is_enabled = 0;
 445
 446         karo_load_splashimage(1);
 447         if (lcd_enabled) {
 448                 debug("Switching LCD on\n");
 449                 gpio_set_value(TX28_LCD_PWR_GPIO, 1);
 450                 udelay(100);
 451                 gpio_set_value(TX28_LCD_RST_GPIO, 1);
 452                 udelay(300000);
 453                 gpio_set_value(TX28_LCD_BACKLIGHT_GPIO, 0);
 454         }
 455 }
 456
 457 void lcd_disable(void)
 458 {
 459         mxsfb_disable();
 460 }
 461
 462 void lcd_panel_disable(void)
 463 {
 464         if (lcd_enabled) {
 465                 debug("Switching LCD off\n");
 466                 gpio_set_value(TX28_LCD_BACKLIGHT_GPIO, 1);
 467                 gpio_set_value(TX28_LCD_RST_GPIO, 0);
 468                 gpio_set_value(TX28_LCD_PWR_GPIO, 0);
 469         }
 470 }
 471
 472 static const iomux_cfg_t stk5_lcd_pads[] = {
 473         /* LCD RESET */
 474         MX28_PAD_LCD_RESET__GPIO_3_30 | MXS_PAD_CTRL,
 475         /* LCD POWER_ENABLE */
 476         MX28_PAD_LCD_ENABLE__GPIO_1_31 | MXS_PAD_CTRL,
 477         /* LCD Backlight (PWM) */
 478         MX28_PAD_PWM0__GPIO_3_16 | MXS_PAD_CTRL,
 479
 480         /* Display */
 481         MX28_PAD_LCD_D00__LCD_D0 | MXS_PAD_CTRL,
 482         MX28_PAD_LCD_D01__LCD_D1 | MXS_PAD_CTRL,
 483         MX28_PAD_LCD_D02__LCD_D2 | MXS_PAD_CTRL,
 484         MX28_PAD_LCD_D03__LCD_D3 | MXS_PAD_CTRL,
 485         MX28_PAD_LCD_D04__LCD_D4 | MXS_PAD_CTRL,
 486         MX28_PAD_LCD_D05__LCD_D5 | MXS_PAD_CTRL,
 487         MX28_PAD_LCD_D06__LCD_D6 | MXS_PAD_CTRL,
 488         MX28_PAD_LCD_D07__LCD_D7 | MXS_PAD_CTRL,
 489         MX28_PAD_LCD_D08__LCD_D8 | MXS_PAD_CTRL,
 490         MX28_PAD_LCD_D09__LCD_D9 | MXS_PAD_CTRL,
 491         MX28_PAD_LCD_D10__LCD_D10 | MXS_PAD_CTRL,
 492         MX28_PAD_LCD_D11__LCD_D11 | MXS_PAD_CTRL,
 493         MX28_PAD_LCD_D12__LCD_D12 | MXS_PAD_CTRL,
 494         MX28_PAD_LCD_D13__LCD_D13 | MXS_PAD_CTRL,
 495         MX28_PAD_LCD_D14__LCD_D14 | MXS_PAD_CTRL,
 496         MX28_PAD_LCD_D15__LCD_D15 | MXS_PAD_CTRL,
 497         MX28_PAD_LCD_D16__LCD_D16 | MXS_PAD_CTRL,
 498         MX28_PAD_LCD_D17__LCD_D17 | MXS_PAD_CTRL,
 499         MX28_PAD_LCD_D18__LCD_D18 | MXS_PAD_CTRL,
 500         MX28_PAD_LCD_D19__LCD_D19 | MXS_PAD_CTRL,
 501         MX28_PAD_LCD_D20__LCD_D20 | MXS_PAD_CTRL,
 502         MX28_PAD_LCD_D21__LCD_D21 | MXS_PAD_CTRL,
 503         MX28_PAD_LCD_D22__LCD_D22 | MXS_PAD_CTRL,
 504         MX28_PAD_LCD_D23__LCD_D23 | MXS_PAD_CTRL,
 505         MX28_PAD_LCD_RD_E__LCD_VSYNC | MXS_PAD_CTRL,
 506         MX28_PAD_LCD_WR_RWN__LCD_HSYNC | MXS_PAD_CTRL,
 507         MX28_PAD_LCD_RS__LCD_DOTCLK | MXS_PAD_CTRL,
 508         MX28_PAD_LCD_CS__LCD_CS | MXS_PAD_CTRL,
 509         MX28_PAD_LCD_VSYNC__LCD_VSYNC | MXS_PAD_CTRL,
 510         MX28_PAD_LCD_HSYNC__LCD_HSYNC | MXS_PAD_CTRL,
 511         MX28_PAD_LCD_DOTCLK__LCD_DOTCLK | MXS_PAD_CTRL,
 512 };
 513
 514 static const struct gpio stk5_lcd_gpios[] = {
 515         { TX28_LCD_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD RESET", },
 516         { TX28_LCD_PWR_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD POWER", },
 517         { TX28_LCD_BACKLIGHT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
 518 };
 519
 520 extern void video_hw_init(void *lcdbase);
 521
 522 void lcd_ctrl_init(void *lcdbase)
 523 {
 524         int color_depth = 24;
 525         char *vm;
 526         unsigned long val;
 527         int refresh = 60;
 528         struct fb_videomode *p = &tx28_fb_modes[0];
 529         int xres_set = 0, yres_set = 0, bpp_set = 0, refresh_set = 0;
 530
 531         if (!lcd_enabled) {
 532                 debug("LCD disabled\n");
 533                 return;
 534         }
 535
 536         if (tstc()) {
 537                 debug("Disabling LCD\n");
 538                 lcd_enabled = 0;
 539                 return;
 540         }
 541
 542         vm = getenv("video_mode");
 543         if (vm == NULL) {
 544                 debug("Disabling LCD\n");
 545                 lcd_enabled = 0;
 546                 return;
 547         }
 548         while (p->name != NULL) {
 549                 if (strcmp(p->name, vm) == 0) {
 550                         printf("Using video mode: '%s'\n", p->name);
 551                         vm += strlen(vm);
 552                         break;
 553                 }
 554                 p++;
 555         }
 556
 557         while (*vm != '\0') {
 558                 if (*vm >= '0' && *vm <= '9') {
 559                         char *end;
 560
 561                         val = simple_strtoul(vm, &end, 0);
 562                         if (end > vm) {
 563                                 if (!xres_set) {
 564                                         if (val > panel_info.vl_col)
 565                                                 val = panel_info.vl_col;
 566                                         p->xres = val;
 567                                         xres_set = 1;
 568                                 } else if (!yres_set) {
 569                                         if (val > panel_info.vl_row)
 570                                                 val = panel_info.vl_row;
 571                                         p->yres = val;
 572                                         yres_set = 1;
 573                                 } else if (!bpp_set) {
 574                                         switch (val) {
 575                                         case 8:
 576                                         case 16:
 577                                         case 18:
 578                                         case 24:
 579                                                 color_depth = val;
 580                                                 break;
 581
 582                                         default:
 583                                                 printf("Invalid color depth: '%.*s' in video_mode; using default: '%u'\n",
 584                                                         end - vm, vm, color_depth);
 585                                         }
 586                                         bpp_set = 1;
 587                                 } else if (!refresh_set) {
 588                                         refresh = val;
 589                                         refresh_set = 1;
 590                                 }
 591                         }
 592                         vm = end;
 593                 }
 594                 switch (*vm) {
 595                 case '@':
 596                         bpp_set = 1;
 597                         /* fallthru */
 598                 case '-':
 599                         yres_set = 1;
 600                         /* fallthru */
 601                 case 'x':
 602                         xres_set = 1;
 603                         /* fallthru */
 604                 case 'M':
 605                 case 'R':
 606                         vm++;
 607                         break;
 608
 609                 default:
 610                         if (*vm != '\0')
 611                                 vm++;
 612                 }
 613         }
 614         if (p->xres == 0 || p->yres == 0) {
 615                 printf("Invalid video mode: %s\n", getenv("video_mode"));
 616                 lcd_enabled = 0;
 617                 printf("Supported video modes are:");
 618                 for (p = &tx28_fb_modes[0]; p->name != NULL; p++) {
 619                         printf(" %s", p->name);
 620                 }
 621                 printf("\n");
 622                 return;
 623         }
 624         p->pixclock = KHZ2PICOS(refresh *
 625                 (p->xres + p->left_margin + p->right_margin + p->hsync_len) *
 626                 (p->yres + p->upper_margin + p->lower_margin + p->vsync_len) /
 627                                 1000);
 628         debug("Pixel clock set to %lu.%03lu MHz\n",
 629                 PICOS2KHZ(p->pixclock) / 1000, PICOS2KHZ(p->pixclock) % 1000);
 630
 631         gpio_request_array(stk5_lcd_gpios, ARRAY_SIZE(stk5_lcd_gpios));
 632         mxs_iomux_setup_multiple_pads(stk5_lcd_pads,
 633                                 ARRAY_SIZE(stk5_lcd_pads));
 634
 635         debug("video format: %ux%u-%u@%u\n", p->xres, p->yres,
 636                 color_depth, refresh);
 637
 638         if (karo_load_splashimage(0) == 0) {
 639                 debug("Initializing LCD controller\n");
 640                 mxsfb_init(p, PIX_FMT_RGB24, color_depth);
 641                 video_hw_init(lcdbase);
 642         } else {
 643                 debug("Skipping initialization of LCD controller\n");
 644         }
 645 }
 646 #else
 647 #define lcd_enabled 0
 648 #endif /* CONFIG_LCD */
 649
 650 static void stk5_board_init(void)
 651 {
 652         gpio_request_array(stk5_gpios, ARRAY_SIZE(stk5_gpios));
 653         mxs_iomux_setup_multiple_pads(stk5_pads, ARRAY_SIZE(stk5_pads));
 654 }
 655
 656 static void stk5v3_board_init(void)
 657 {
 658         stk5_board_init();
 659 }
 660
 661 static void stk5v5_board_init(void)
 662 {
 663         stk5_board_init();
 664
 665         /* init flexcan transceiver enable GPIO */
 666         gpio_request_one(MXS_GPIO_NR(0, 1), GPIOF_OUTPUT_INIT_HIGH,
 667                         "Flexcan Transceiver");
 668         mxs_iomux_setup_pad(MX28_PAD_LCD_D00__GPIO_1_0);
 669 }
 670
 671 int board_late_init(void)
 672 {
 673         const char *baseboard;
 674
 675         karo_fdt_move_fdt();
 676
 677         baseboard = getenv("baseboard");
 678         if (!baseboard)
 679                 return 0;
 680
 681         if (strncmp(baseboard, "stk5", 4) == 0) {
 682                 printf("Baseboard: %s\n", baseboard);
 683                 if ((strlen(baseboard) == 4) ||
 684                         strcmp(baseboard, "stk5-v3") == 0) {
 685                         stk5v3_board_init();
 686                 } else if (strcmp(baseboard, "stk5-v5") == 0) {
 687                         stk5v5_board_init();
 688                 } else {
 689                         printf("WARNING: Unsupported STK5 board rev.: %s\n",
 690                                 baseboard + 4);
 691                 }
 692         } else {
 693                 printf("WARNING: Unsupported baseboard: '%s'\n",
 694                         baseboard);
 695                 return -EINVAL;
 696         }
 697
 698         return 0;
 699 }
 700
 701 int checkboard(void)
 702 {
 703         printf("Board: Ka-Ro TX28-4%sxx\n", TX28_MOD_SUFFIX);
 704         return 0;
 705 }
 706
 707 #if defined(CONFIG_OF_BOARD_SETUP)
 708 #ifdef CONFIG_FDT_FIXUP_PARTITIONS
 709 #include <jffs2/jffs2.h>
 710 #include <mtd_node.h>
 711 struct node_info tx28_nand_nodes[] = {
 712         { "gpmi-nand", MTD_DEV_TYPE_NAND, },
 713 };
 714 #else
 715 #define fdt_fixup_mtdparts(b,n,c) do { } while (0)
 716 #endif
 717
 718 static void tx28_fixup_flexcan(void *blob)
 719 {
 720         karo_fdt_del_prop(blob, "fsl,p1010-flexcan", 0x80032000, "transceiver-switch");
 721         karo_fdt_del_prop(blob, "fsl,p1010-flexcan", 0x80034000, "transceiver-switch");
 722 }
 723
 724 static void tx28_fixup_fec(void *blob)
 725 {
 726         karo_fdt_remove_node(blob, "ethernet1");
 727 }
 728
 729 void ft_board_setup(void *blob, bd_t *bd)
 730 {
 731         const char *baseboard = getenv("baseboard");
 732
 733 #ifdef CONFIG_TX28_S
 734         /* TX28-41xx (aka TX28S) has no external RTC
 735          * and no I2C GPIO extender
 736          */
 737         karo_fdt_remove_node(blob, "ds1339");
 738         karo_fdt_remove_node(blob, "pca9554");
 739 #endif
 740         if (baseboard != NULL && strcmp(baseboard, "stk5-v5") == 0) {
 741                 const char *otg_mode = getenv("otg_mode");
 742
 743                 if (otg_mode && strcmp(otg_mode, "host") == 0) {
 744                         printf("otg_mode=%s incompatible with baseboard %s\n",
 745                                 otg_mode, baseboard);
 746                         setenv(otg_mode, "none");
 747                 }
 748                 karo_fdt_remove_node(blob, "stk5led");
 749         } else {
 750                 tx28_fixup_flexcan(blob);
 751                 tx28_fixup_fec(blob);
 752         }
 753
 754         if (baseboard != NULL && strcmp(baseboard, "stk5-v3") == 0) {
 755                 const char *otg_mode = getenv("otg_mode");
 756
 757                 if (otg_mode && strcmp(otg_mode, "device") == 0)
 758                         karo_fdt_remove_node(blob, "can1");
 759         }
 760
 761         fdt_fixup_mtdparts(blob, tx28_nand_nodes, ARRAY_SIZE(tx28_nand_nodes));
 762         fdt_fixup_ethernet(blob);
 763
 764         karo_fdt_fixup_touchpanel(blob);
 765         karo_fdt_fixup_usb_otg(blob, "fsl,imx28-usbphy", 0x8007c000);
 766 }
 767 #endif