board/karo/tx6/tx6-1020.c

   1 /*
   2  * Copyright (C) 2012,2013 Lothar Waßmann <LW@KARO-electronics.de>
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  */
  17
  18 #include <common.h>
  19 #include <errno.h>
  20 #include <libfdt.h>
  21 #include <fdt_support.h>
  22 #include <lcd.h>
  23 #include <netdev.h>
  24 #include <mmc.h>
  25 #include <fsl_esdhc.h>
  26 #include <video_fb.h>
  27 #include <ipu.h>
  28 #include <mxcfb.h>
  29 #include <i2c.h>
  30 #include <linux/fb.h>
  31 #include <asm/io.h>
  32 #include <asm/gpio.h>
  33 #include <asm/arch/mx6-pins.h>
  34 #include <asm/arch/clock.h>
  35 #include <asm/arch/imx-regs.h>
  36 #include <asm/arch/crm_regs.h>
  37 #include <asm/arch/sys_proto.h>
  38
  39 #include "../common/karo.h"
  40
  41 #define TX6_FEC_RST_GPIO                IMX_GPIO_NR(7, 6)
  42 #define TX6_FEC_PWR_GPIO                IMX_GPIO_NR(3, 20)
  43 #define TX6_FEC_INT_GPIO                IMX_GPIO_NR(7, 1)
  44 #define TX6_LED_GPIO                    IMX_GPIO_NR(2, 20)
  45
  46 #define TX6_LCD_PWR_GPIO                IMX_GPIO_NR(2, 31)
  47 #define TX6_LCD_RST_GPIO                IMX_GPIO_NR(3, 29)
  48 #define TX6_LCD_BACKLIGHT_GPIO          IMX_GPIO_NR(1, 1)
  49
  50 #define TX6_RESET_OUT_GPIO              IMX_GPIO_NR(7, 12)
  51
  52 #define TEMPERATURE_MIN                 -40
  53 #define TEMPERATURE_HOT                 80
  54 #define TEMPERATURE_MAX                 125
  55
  56 DECLARE_GLOBAL_DATA_PTR;
  57
  58 #define MUX_CFG_SION                    IOMUX_PAD(0, 0, IOMUX_CONFIG_SION, 0, 0, 0)
  59
  60 static const iomux_v3_cfg_t tx6qdl_pads[] = {
  61         /* RESET_OUT */
  62         MX6_PAD_GPIO_17__GPIO_7_12,
  63
  64         /* UART pads */
  65 #if CONFIG_MXC_UART_BASE == UART1_BASE
  66         MX6_PAD_SD3_DAT7__UART1_TXD,
  67         MX6_PAD_SD3_DAT6__UART1_RXD,
  68         MX6_PAD_SD3_DAT1__UART1_RTS,
  69         MX6_PAD_SD3_DAT0__UART1_CTS,
  70 #endif
  71 #if CONFIG_MXC_UART_BASE == UART2_BASE
  72         MX6_PAD_SD4_DAT4__UART2_RXD,
  73         MX6_PAD_SD4_DAT7__UART2_TXD,
  74         MX6_PAD_SD4_DAT5__UART2_RTS,
  75         MX6_PAD_SD4_DAT6__UART2_CTS,
  76 #endif
  77 #if CONFIG_MXC_UART_BASE == UART3_BASE
  78         MX6_PAD_EIM_D24__UART3_TXD,
  79         MX6_PAD_EIM_D25__UART3_RXD,
  80         MX6_PAD_SD3_RST__UART3_RTS,
  81         MX6_PAD_SD3_DAT3__UART3_CTS,
  82 #endif
  83         /* internal I2C */
  84         MX6_PAD_EIM_D28__I2C1_SDA,
  85         MX6_PAD_EIM_D21__I2C1_SCL,
  86
  87         /* FEC PHY GPIO functions */
  88         MX6_PAD_EIM_D20__GPIO_3_20 | MUX_CFG_SION, /* PHY POWER */
  89         MX6_PAD_SD3_DAT2__GPIO_7_6 | MUX_CFG_SION, /* PHY RESET */
  90         MX6_PAD_SD3_DAT4__GPIO_7_1, /* PHY INT */
  91 };
  92
  93 static const iomux_v3_cfg_t tx6qdl_fec_pads[] = {
  94         /* FEC functions */
  95         MX6_PAD_ENET_MDC__ENET_MDC,
  96         MX6_PAD_ENET_MDIO__ENET_MDIO,
  97         MX6_PAD_GPIO_16__ENET_ANATOP_ETHERNET_REF_OUT,
  98         MX6_PAD_ENET_RX_ER__ENET_RX_ER,
  99         MX6_PAD_ENET_CRS_DV__ENET_RX_EN,
 100         MX6_PAD_ENET_RXD1__ENET_RDATA_1,
 101         MX6_PAD_ENET_RXD0__ENET_RDATA_0,
 102         MX6_PAD_ENET_TX_EN__ENET_TX_EN,
 103         MX6_PAD_ENET_TXD1__ENET_TDATA_1,
 104         MX6_PAD_ENET_TXD0__ENET_TDATA_0,
 105 };
 106
 107 static const struct gpio tx6qdl_gpios[] = {
 108         { TX6_RESET_OUT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "#RESET_OUT", },
 109         { TX6_FEC_PWR_GPIO, GPIOF_OUTPUT_INIT_HIGH, "FEC PHY PWR", },
 110         { TX6_FEC_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "FEC PHY RESET", },
 111         { TX6_FEC_INT_GPIO, GPIOF_INPUT, "FEC PHY INT", },
 112 };
 113
 114 /*
 115  * Functions
 116  */
 117 /* placed in section '.data' to prevent overwriting relocation info
 118  * overlayed with bss
 119  */
 120 static u32 wrsr __attribute__((section(".data")));
 121
 122 #define WRSR_POR                        (1 << 4)
 123 #define WRSR_TOUT                       (1 << 1)
 124 #define WRSR_SFTW                       (1 << 0)
 125
 126 static void print_reset_cause(void)
 127 {
 128         struct src *src_regs = (struct src *)SRC_BASE_ADDR;
 129         void __iomem *wdt_base = (void __iomem *)WDOG1_BASE_ADDR;
 130         u32 srsr;
 131         char *dlm = "";
 132
 133         printf("Reset cause: ");
 134
 135         srsr = readl(&src_regs->srsr);
 136         wrsr = readw(wdt_base + 4);
 137
 138         if (wrsr & WRSR_POR) {
 139                 printf("%sPOR", dlm);
 140                 dlm = " | ";
 141         }
 142         if (srsr & 0x00004) {
 143                 printf("%sCSU", dlm);
 144                 dlm = " | ";
 145         }
 146         if (srsr & 0x00008) {
 147                 printf("%sIPP USER", dlm);
 148                 dlm = " | ";
 149         }
 150         if (srsr & 0x00010) {
 151                 if (wrsr & WRSR_SFTW) {
 152                         printf("%sSOFT", dlm);
 153                         dlm = " | ";
 154                 }
 155                 if (wrsr & WRSR_TOUT) {
 156                         printf("%sWDOG", dlm);
 157                         dlm = " | ";
 158                 }
 159         }
 160         if (srsr & 0x00020) {
 161                 printf("%sJTAG HIGH-Z", dlm);
 162                 dlm = " | ";
 163         }
 164         if (srsr & 0x00040) {
 165                 printf("%sJTAG SW", dlm);
 166                 dlm = " | ";
 167         }
 168         if (srsr & 0x10000) {
 169                 printf("%sWARM BOOT", dlm);
 170                 dlm = " | ";
 171         }
 172         if (dlm[0] == '\0')
 173                 printf("unknown");
 174
 175         printf("\n");
 176 }
 177
 178 int read_cpu_temperature(void);
 179 int check_cpu_temperature(int boot);
 180
 181 static void tx6qdl_print_cpuinfo(void)
 182 {
 183         u32 cpurev = get_cpu_rev();
 184         char *cpu_str = "?";
 185
 186         switch ((cpurev >> 12) & 0xff) {
 187         case MXC_CPU_MX6SL:
 188                 cpu_str = "SL";
 189                 break;
 190         case MXC_CPU_MX6DL:
 191                 cpu_str = "DL";
 192                 break;
 193         case MXC_CPU_MX6SOLO:
 194                 cpu_str = "SOLO";
 195                 break;
 196         case MXC_CPU_MX6Q:
 197                 cpu_str = "Q";
 198                 break;
 199         }
 200
 201         printf("CPU:   Freescale i.MX6%s rev%d.%d at %d MHz\n",
 202                 cpu_str,
 203                 (cpurev & 0x000F0) >> 4,
 204                 (cpurev & 0x0000F) >> 0,
 205                 mxc_get_clock(MXC_ARM_CLK) / 1000000);
 206
 207         print_reset_cause();
 208         check_cpu_temperature(1);
 209 }
 210
 211 #define RN5T618_NOETIMSET       0x11
 212 #define RN5T618_LDORTC1_SLOT    0x2a
 213 #define RN5T618_DC1CTL          0x2c
 214 #define RN5T618_DC1CTL2         0x2d
 215 #define RN5T618_DC2CTL          0x2e
 216 #define RN5T618_DC2CTL2         0x2f
 217 #define RN5T618_DC3CTL          0x30
 218 #define RN5T618_DC3CTL2         0x31
 219 #define RN5T618_DC1DAC          0x36 /* CORE */
 220 #define RN5T618_DC2DAC          0x37 /* SOC */
 221 #define RN5T618_DC3DAC          0x38 /* DDR */
 222 #define RN5T618_DC1DAC_SLP      0x3b
 223 #define RN5T618_DC2DAC_SLP      0x3c
 224 #define RN5T618_DC3DAC_SLP      0x3d
 225 #define RN5T618_LDOEN1          0x44
 226 #define RN5T618_LDODIS          0x46
 227 #define RN5T618_LDOEN2          0x48
 228 #define RN5T618_LDO3DAC         0x4e /* IO */
 229 #define RN5T618_LDORTCDAC       0x56 /* VBACKUP */
 230
 231 #define VDD_RTC_VAL             mV_to_regval_rtc(3000 * 10)
 232 #define VDD_HIGH_VAL            mV_to_regval3(3000 * 10)
 233 #define VDD_HIGH_VAL_LP         mV_to_regval3(3000 * 10)
 234 #define VDD_CORE_VAL            mV_to_regval(1425 * 10)
 235 #define VDD_CORE_VAL_LP         mV_to_regval(900 * 10)
 236 #define VDD_SOC_VAL             mV_to_regval(1425 * 10)
 237 #define VDD_SOC_VAL_LP          mV_to_regval(900 * 10)
 238 #define VDD_DDR_VAL             mV_to_regval(1350 * 10)
 239 #define VDD_DDR_VAL_LP          mV_to_regval(1350 * 10)
 240
 241 /* calculate voltages in 10mV */
 242 #define mV_to_regval(mV)        DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 125)
 243 #define regval_to_mV(v)         (((v) * 125 + 6000))
 244
 245 #define mV_to_regval2(mV)       DIV_ROUND(((((mV) < 9000) ? 9000 : (mV)) - 9000), 250)
 246 #define regval2_to_mV(v)        (((v) * 250 + 9000))
 247
 248 #define mV_to_regval3(mV)       DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 250)
 249 #define regval3_to_mV(v)        (((v) * 250 + 6000))
 250
 251 #define mV_to_regval_rtc(mV)    DIV_ROUND(((((mV) < 17000) ? 17000 : (mV)) - 17000), 250)
 252 #define regval_rtc_to_mV(v)     (((v) * 250 + 17000))
 253
 254 static struct rn5t618_regs {
 255         u8 addr;
 256         u8 val;
 257         u8 mask;
 258 } rn5t618_regs[] = {
 259         { RN5T618_NOETIMSET, 0, },
 260         { RN5T618_DC1DAC, VDD_CORE_VAL, },
 261         { RN5T618_DC2DAC, VDD_SOC_VAL, },
 262         { RN5T618_DC3DAC, VDD_DDR_VAL, },
 263         { RN5T618_DC1DAC_SLP, VDD_CORE_VAL_LP, },
 264         { RN5T618_DC2DAC_SLP, VDD_SOC_VAL_LP, },
 265         { RN5T618_DC3DAC_SLP, VDD_DDR_VAL_LP, },
 266         { RN5T618_LDOEN1, 0x04, ~0x1f, },
 267         { RN5T618_LDOEN2, 0x10, ~0x30, },
 268         { RN5T618_LDODIS, 0x00, },
 269         { RN5T618_LDO3DAC, VDD_HIGH_VAL, },
 270         { RN5T618_LDORTCDAC, VDD_RTC_VAL, },
 271         { RN5T618_LDORTC1_SLOT, 0x0f, ~0x3f, },
 272 };
 273
 274 static int tx6_rn5t618_setup_regs(struct rn5t618_regs *r, size_t count)
 275 {
 276         int ret;
 277         int i;
 278
 279         for (i = 0; i < count; i++, r++) {
 280 #ifdef DEBUG
 281                 unsigned char value;
 282
 283                 ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
 284                 if ((value & ~r->mask) != r->val) {
 285                         printf("Changing PMIC reg %02x from %02x to %02x\n",
 286                                 r->addr, value, r->val);
 287                 }
 288                 if (ret) {
 289                         printf("%s: failed to read PMIC register %02x: %d\n",
 290                                 __func__, r->addr, ret);
 291                         return ret;
 292                 }
 293 #endif
 294                 ret = i2c_write(CONFIG_SYS_I2C_SLAVE,
 295                                 r->addr, 1, &r->val, 1);
 296                 if (ret) {
 297                         printf("%s: failed to write PMIC register %02x: %d\n",
 298                                 __func__, r->addr, ret);
 299                         return ret;
 300                 }
 301 #ifdef DEBUG
 302                 ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
 303                 printf("PMIC reg %02x is %02x\n", r->addr, value);
 304 #endif
 305         }
 306         return 0;
 307 }
 308
 309 static int setup_pmic_voltages(void)
 310 {
 311         int ret;
 312         unsigned char value;
 313
 314         ret = i2c_probe(CONFIG_SYS_I2C_SLAVE);
 315         if (ret != 0) {
 316                 printf("Failed to initialize I2C\n");
 317                 return ret;
 318         }
 319
 320         ret = i2c_read(CONFIG_SYS_I2C_SLAVE, 0x11, 1, &value, 1);
 321         if (ret) {
 322                 printf("%s: i2c_read error: %d\n", __func__, ret);
 323                 return ret;
 324         }
 325
 326         ret = tx6_rn5t618_setup_regs(rn5t618_regs, ARRAY_SIZE(rn5t618_regs));
 327         if (ret)
 328                 return ret;
 329
 330         printf("VDDCORE set to %umV\n",
 331                 DIV_ROUND(regval_to_mV(VDD_CORE_VAL), 10));
 332         printf("VDDSOC  set to %umV\n",
 333                 DIV_ROUND(regval_to_mV(VDD_SOC_VAL), 10));
 334
 335         return ret;
 336 }
 337
 338 int board_early_init_f(void)
 339 {
 340         gpio_request_array(tx6qdl_gpios, ARRAY_SIZE(tx6qdl_gpios));
 341         imx_iomux_v3_setup_multiple_pads(tx6qdl_pads, ARRAY_SIZE(tx6qdl_pads));
 342
 343         return 0;
 344 }
 345
 346 int board_init(void)
 347 {
 348         int ret;
 349
 350         /* Address of boot parameters */
 351         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x1000;
 352         gd->bd->bi_arch_number = -1;
 353
 354         if (ctrlc()) {
 355                 printf("CTRL-C detected; Skipping PMIC setup\n");
 356                 return 1;
 357         }
 358
 359         ret = setup_pmic_voltages();
 360         if (ret) {
 361                 printf("Failed to setup PMIC voltages\n");
 362                 hang();
 363         }
 364         return 0;
 365 }
 366
 367 int dram_init(void)
 368 {
 369         /* dram_init must store complete ramsize in gd->ram_size */
 370         gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
 371                                 PHYS_SDRAM_1_SIZE);
 372         return 0;
 373 }
 374
 375 void dram_init_banksize(void)
 376 {
 377         gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
 378         gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1,
 379                         PHYS_SDRAM_1_SIZE);
 380 #if CONFIG_NR_DRAM_BANKS > 1
 381         gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
 382         gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
 383                         PHYS_SDRAM_2_SIZE);
 384 #endif
 385 }
 386
 387 #ifdef  CONFIG_CMD_MMC
 388 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |                    \
 389         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
 390         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
 391
 392 static const iomux_v3_cfg_t mmc0_pads[] = {
 393         MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 394         MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 395         MX6_PAD_SD1_DAT0__USDHC1_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 396         MX6_PAD_SD1_DAT1__USDHC1_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 397         MX6_PAD_SD1_DAT2__USDHC1_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 398         MX6_PAD_SD1_DAT3__USDHC1_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 399         /* SD1 CD */
 400         MX6_PAD_SD3_CMD__GPIO_7_2,
 401 };
 402
 403 static const iomux_v3_cfg_t mmc1_pads[] = {
 404         MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 405         MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 406         MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 407         MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 408         MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 409         MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 410         /* SD2 CD */
 411         MX6_PAD_SD3_CLK__GPIO_7_3,
 412 };
 413
 414 static const iomux_v3_cfg_t mmc4_pads[] = {
 415         MX6_PAD_SD4_CMD__USDHC4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 416         MX6_PAD_SD4_CLK__USDHC4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 417         MX6_PAD_SD4_DAT0__USDHC4_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 418         MX6_PAD_SD4_DAT1__USDHC4_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 419         MX6_PAD_SD4_DAT2__USDHC4_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 420         MX6_PAD_SD4_DAT3__USDHC4_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 421         MX6_PAD_NANDF_ALE__USDHC4_RST,
 422 };
 423
 424 static struct tx6_esdhc_cfg {
 425         const iomux_v3_cfg_t *pads;
 426         int num_pads;
 427         enum mxc_clock clkid;
 428         struct fsl_esdhc_cfg cfg;
 429         int cd_gpio;
 430 } tx6qdl_esdhc_cfg[] = {
 431         {
 432                 .pads = mmc0_pads,
 433                 .num_pads = ARRAY_SIZE(mmc0_pads),
 434                 .clkid = MXC_ESDHC_CLK,
 435                 .cfg = {
 436                         .esdhc_base = (void __iomem *)USDHC1_BASE_ADDR,
 437                         .max_bus_width = 4,
 438                 },
 439                 .cd_gpio = IMX_GPIO_NR(7, 2),
 440         },
 441         {
 442                 .pads = mmc1_pads,
 443                 .num_pads = ARRAY_SIZE(mmc1_pads),
 444                 .clkid = MXC_ESDHC2_CLK,
 445                 .cfg = {
 446                         .esdhc_base = (void __iomem *)USDHC2_BASE_ADDR,
 447                         .max_bus_width = 4,
 448                 },
 449                 .cd_gpio = IMX_GPIO_NR(7, 3),
 450         },
 451         {
 452                 .pads = mmc4_pads,
 453                 .num_pads = ARRAY_SIZE(mmc4_pads),
 454                 .clkid = MXC_ESDHC4_CLK,
 455                 .cfg = {
 456                         .esdhc_base = (void __iomem *)USDHC4_BASE_ADDR,
 457                         .max_bus_width = 4,
 458                 },
 459                 .cd_gpio = -EINVAL,
 460         },
 461 };
 462
 463 static inline struct tx6_esdhc_cfg *to_tx6_esdhc_cfg(struct fsl_esdhc_cfg *cfg)
 464 {
 465         return container_of(cfg, struct tx6_esdhc_cfg, cfg);
 466 }
 467
 468 int board_mmc_getcd(struct mmc *mmc)
 469 {
 470         struct tx6_esdhc_cfg *cfg = to_tx6_esdhc_cfg(mmc->priv);
 471
 472         if (cfg->cd_gpio < 0)
 473                 return 1;
 474
 475         debug("SD card %d is %spresent\n",
 476                 cfg - tx6qdl_esdhc_cfg,
 477                 gpio_get_value(cfg->cd_gpio) ? "NOT " : "");
 478         return !gpio_get_value(cfg->cd_gpio);
 479 }
 480
 481 int board_mmc_init(bd_t *bis)
 482 {
 483         int i;
 484
 485         for (i = 0; i < ARRAY_SIZE(tx6qdl_esdhc_cfg); i++) {
 486                 struct mmc *mmc;
 487                 struct tx6_esdhc_cfg *cfg = &tx6qdl_esdhc_cfg[i];
 488                 int ret;
 489
 490                 cfg->cfg.sdhc_clk = mxc_get_clock(cfg->clkid);
 491                 imx_iomux_v3_setup_multiple_pads(cfg->pads, cfg->num_pads);
 492
 493                 if (cfg->cd_gpio >= 0) {
 494                         ret = gpio_request_one(cfg->cd_gpio,
 495                                         GPIOF_INPUT, "MMC CD");
 496                         if (ret) {
 497                                 printf("Error %d requesting GPIO%d_%d\n",
 498                                         ret, cfg->cd_gpio / 32, cfg->cd_gpio % 32);
 499                                 continue;
 500                         }
 501                 }
 502
 503                 debug("%s: Initializing MMC slot %d\n", __func__, i);
 504                 fsl_esdhc_initialize(bis, &cfg->cfg);
 505
 506                 mmc = find_mmc_device(i);
 507                 if (mmc == NULL)
 508                         continue;
 509                 if (board_mmc_getcd(mmc))
 510                         mmc_init(mmc);
 511         }
 512         return 0;
 513 }
 514 #endif /* CONFIG_CMD_MMC */
 515
 516 #ifdef CONFIG_FEC_MXC
 517
 518 #define FEC_PAD_CTL     (PAD_CTL_DVS | PAD_CTL_DSE_HIGH | \
 519                         PAD_CTL_SRE_FAST)
 520 #define FEC_PAD_CTL2    (PAD_CTL_DVS | PAD_CTL_SRE_FAST)
 521 #define GPIO_PAD_CTL    (PAD_CTL_DVS | PAD_CTL_DSE_HIGH)
 522
 523 #ifndef ETH_ALEN
 524 #define ETH_ALEN 6
 525 #endif
 526
 527 int board_eth_init(bd_t *bis)
 528 {
 529         int ret;
 530
 531         /* delay at least 21ms for the PHY internal POR signal to deassert */
 532         udelay(22000);
 533
 534         imx_iomux_v3_setup_multiple_pads(tx6qdl_fec_pads, ARRAY_SIZE(tx6qdl_fec_pads));
 535
 536         /* Deassert RESET to the external phy */
 537         gpio_set_value(TX6_FEC_RST_GPIO, 1);
 538
 539         ret = cpu_eth_init(bis);
 540         if (ret)
 541                 printf("cpu_eth_init() failed: %d\n", ret);
 542
 543         return ret;
 544 }
 545 #endif /* CONFIG_FEC_MXC */
 546
 547 enum {
 548         LED_STATE_INIT = -1,
 549         LED_STATE_OFF,
 550         LED_STATE_ON,
 551 };
 552
 553 static inline int calc_blink_rate(int tmp)
 554 {
 555         return CONFIG_SYS_HZ + CONFIG_SYS_HZ / 10 -
 556                 (tmp - TEMPERATURE_MIN) * CONFIG_SYS_HZ /
 557                 (TEMPERATURE_HOT - TEMPERATURE_MIN);
 558 }
 559
 560 void show_activity(int arg)
 561 {
 562         static int led_state = LED_STATE_INIT;
 563         static int blink_rate;
 564         static ulong last;
 565
 566         if (led_state == LED_STATE_INIT) {
 567                 last = get_timer(0);
 568                 gpio_set_value(TX6_LED_GPIO, 1);
 569                 led_state = LED_STATE_ON;
 570                 blink_rate = calc_blink_rate(check_cpu_temperature(0));
 571         } else {
 572                 if (get_timer(last) > blink_rate) {
 573                         blink_rate = calc_blink_rate(check_cpu_temperature(0));
 574                         last = get_timer_masked();
 575                         if (led_state == LED_STATE_ON) {
 576                                 gpio_set_value(TX6_LED_GPIO, 0);
 577                         } else {
 578                                 gpio_set_value(TX6_LED_GPIO, 1);
 579                         }
 580                         led_state = 1 - led_state;
 581                 }
 582         }
 583 }
 584
 585 static const iomux_v3_cfg_t stk5_pads[] = {
 586         /* SW controlled LED on STK5 baseboard */
 587         MX6_PAD_EIM_A18__GPIO_2_20,
 588
 589         /* LCD data pins */
 590         MX6_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0,
 591         MX6_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1,
 592         MX6_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2,
 593         MX6_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3,
 594         MX6_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4,
 595         MX6_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5,
 596         MX6_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6,
 597         MX6_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7,
 598         MX6_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8,
 599         MX6_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9,
 600         MX6_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10,
 601         MX6_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11,
 602         MX6_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12,
 603         MX6_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13,
 604         MX6_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14,
 605         MX6_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15,
 606         MX6_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16,
 607         MX6_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17,
 608         MX6_PAD_DISP0_DAT18__IPU1_DISP0_DAT_18,
 609         MX6_PAD_DISP0_DAT19__IPU1_DISP0_DAT_19,
 610         MX6_PAD_DISP0_DAT20__IPU1_DISP0_DAT_20,
 611         MX6_PAD_DISP0_DAT21__IPU1_DISP0_DAT_21,
 612         MX6_PAD_DISP0_DAT22__IPU1_DISP0_DAT_22,
 613         MX6_PAD_DISP0_DAT23__IPU1_DISP0_DAT_23,
 614         MX6_PAD_DI0_PIN2__IPU1_DI0_PIN2, /* HSYNC */
 615         MX6_PAD_DI0_PIN3__IPU1_DI0_PIN3, /* VSYNC */
 616         MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15, /* OE_ACD */
 617         MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK, /* LSCLK */
 618
 619         /* I2C bus on DIMM pins 40/41 */
 620         MX6_PAD_GPIO_6__I2C3_SDA,
 621         MX6_PAD_GPIO_3__I2C3_SCL,
 622
 623         /* TSC200x PEN IRQ */
 624         MX6_PAD_EIM_D26__GPIO_3_26,
 625
 626         /* EDT-FT5x06 Polytouch panel */
 627         MX6_PAD_NANDF_CS2__GPIO_6_15, /* IRQ */
 628         MX6_PAD_EIM_A16__GPIO_2_22, /* RESET */
 629         MX6_PAD_EIM_A17__GPIO_2_21, /* WAKE */
 630
 631         /* USBH1 */
 632         MX6_PAD_EIM_D31__GPIO_3_31, /* VBUSEN */
 633         MX6_PAD_EIM_D30__GPIO_3_30, /* OC */
 634         /* USBOTG */
 635         MX6_PAD_EIM_D23__GPIO_3_23, /* USBOTG ID */
 636         MX6_PAD_GPIO_7__GPIO_1_7, /* VBUSEN */
 637         MX6_PAD_GPIO_8__GPIO_1_8, /* OC */
 638 };
 639
 640 static const struct gpio stk5_gpios[] = {
 641         { TX6_LED_GPIO, GPIOF_OUTPUT_INIT_LOW, "HEARTBEAT LED", },
 642
 643         { IMX_GPIO_NR(3, 23), GPIOF_INPUT, "USBOTG ID", },
 644         { IMX_GPIO_NR(1, 8), GPIOF_INPUT, "USBOTG OC", },
 645         { IMX_GPIO_NR(1, 7), GPIOF_OUTPUT_INIT_LOW, "USBOTG VBUS enable", },
 646         { IMX_GPIO_NR(3, 30), GPIOF_INPUT, "USBH1 OC", },
 647         { IMX_GPIO_NR(3, 31), GPIOF_OUTPUT_INIT_LOW, "USBH1 VBUS enable", },
 648 };
 649
 650 #ifdef CONFIG_LCD
 651 static u16 tx6_cmap[256];
 652 vidinfo_t panel_info = {
 653         /* set to max. size supported by SoC */
 654         .vl_col = 1920,
 655         .vl_row = 1080,
 656
 657         .vl_bpix = LCD_COLOR24,    /* Bits per pixel, 0: 1bpp, 1: 2bpp, 2: 4bpp, 3: 8bpp ... */
 658         .cmap = tx6_cmap,
 659 };
 660
 661 static struct fb_videomode tx6_fb_modes[] = {
 662 #ifndef CONFIG_SYS_LVDS_IF
 663         {
 664                 /* Standard VGA timing */
 665                 .name           = "VGA",
 666                 .refresh        = 60,
 667                 .xres           = 640,
 668                 .yres           = 480,
 669                 .pixclock       = KHZ2PICOS(25175),
 670                 .left_margin    = 48,
 671                 .hsync_len      = 96,
 672                 .right_margin   = 16,
 673                 .upper_margin   = 31,
 674                 .vsync_len      = 2,
 675                 .lower_margin   = 12,
 676                 .sync           = FB_SYNC_CLK_LAT_FALL,
 677         },
 678         {
 679                 /* Emerging ETV570 640 x 480 display. Syncs low active,
 680                  * DE high active, 115.2 mm x 86.4 mm display area
 681                  * VGA compatible timing
 682                  */
 683                 .name           = "ETV570",
 684                 .refresh        = 60,
 685                 .xres           = 640,
 686                 .yres           = 480,
 687                 .pixclock       = KHZ2PICOS(25175),
 688                 .left_margin    = 114,
 689                 .hsync_len      = 30,
 690                 .right_margin   = 16,
 691                 .upper_margin   = 32,
 692                 .vsync_len      = 3,
 693                 .lower_margin   = 10,
 694                 .sync           = FB_SYNC_CLK_LAT_FALL,
 695         },
 696         {
 697                 /* Emerging ET0350G0DH6 320 x 240 display.
 698                  * 70.08 mm x 52.56 mm display area.
 699                  */
 700                 .name           = "ET0350",
 701                 .refresh        = 60,
 702                 .xres           = 320,
 703                 .yres           = 240,
 704                 .pixclock       = KHZ2PICOS(6500),
 705                 .left_margin    = 68 - 34,
 706                 .hsync_len      = 34,
 707                 .right_margin   = 20,
 708                 .upper_margin   = 18 - 3,
 709                 .vsync_len      = 3,
 710                 .lower_margin   = 4,
 711                 .sync           = FB_SYNC_CLK_LAT_FALL,
 712         },
 713         {
 714                 /* Emerging ET0430G0DH6 480 x 272 display.
 715                  * 95.04 mm x 53.856 mm display area.
 716                  */
 717                 .name           = "ET0430",
 718                 .refresh        = 60,
 719                 .xres           = 480,
 720                 .yres           = 272,
 721                 .pixclock       = KHZ2PICOS(9000),
 722                 .left_margin    = 2,
 723                 .hsync_len      = 41,
 724                 .right_margin   = 2,
 725                 .upper_margin   = 2,
 726                 .vsync_len      = 10,
 727                 .lower_margin   = 2,
 728                 .sync           = FB_SYNC_CLK_LAT_FALL,
 729         },
 730         {
 731                 /* Emerging ET0500G0DH6 800 x 480 display.
 732                  * 109.6 mm x 66.4 mm display area.
 733                  */
 734                 .name           = "ET0500",
 735                 .refresh        = 60,
 736                 .xres           = 800,
 737                 .yres           = 480,
 738                 .pixclock       = KHZ2PICOS(33260),
 739                 .left_margin    = 216 - 128,
 740                 .hsync_len      = 128,
 741                 .right_margin   = 1056 - 800 - 216,
 742                 .upper_margin   = 35 - 2,
 743                 .vsync_len      = 2,
 744                 .lower_margin   = 525 - 480 - 35,
 745                 .sync           = FB_SYNC_CLK_LAT_FALL,
 746         },
 747         {
 748                 /* Emerging ETQ570G0DH6 320 x 240 display.
 749                  * 115.2 mm x 86.4 mm display area.
 750                  */
 751                 .name           = "ETQ570",
 752                 .refresh        = 60,
 753                 .xres           = 320,
 754                 .yres           = 240,
 755                 .pixclock       = KHZ2PICOS(6400),
 756                 .left_margin    = 38,
 757                 .hsync_len      = 30,
 758                 .right_margin   = 30,
 759                 .upper_margin   = 16, /* 15 according to datasheet */
 760                 .vsync_len      = 3, /* TVP -> 1>x>5 */
 761                 .lower_margin   = 4, /* 4.5 according to datasheet */
 762                 .sync           = FB_SYNC_CLK_LAT_FALL,
 763         },
 764         {
 765                 /* Emerging ET0700G0DH6 800 x 480 display.
 766                  * 152.4 mm x 91.44 mm display area.
 767                  */
 768                 .name           = "ET0700",
 769                 .refresh        = 60,
 770                 .xres           = 800,
 771                 .yres           = 480,
 772                 .pixclock       = KHZ2PICOS(33260),
 773                 .left_margin    = 216 - 128,
 774                 .hsync_len      = 128,
 775                 .right_margin   = 1056 - 800 - 216,
 776                 .upper_margin   = 35 - 2,
 777                 .vsync_len      = 2,
 778                 .lower_margin   = 525 - 480 - 35,
 779                 .sync           = FB_SYNC_CLK_LAT_FALL,
 780         },
 781         {
 782                 /* Emerging ET070001DM6 800 x 480 display.
 783                  * 152.4 mm x 91.44 mm display area.
 784                  */
 785                 .name           = "ET070001DM6",
 786                 .refresh        = 60,
 787                 .xres           = 800,
 788                 .yres           = 480,
 789                 .pixclock       = KHZ2PICOS(33260),
 790                 .left_margin    = 216 - 128,
 791                 .hsync_len      = 128,
 792                 .right_margin   = 1056 - 800 - 216,
 793                 .upper_margin   = 35 - 2,
 794                 .vsync_len      = 2,
 795                 .lower_margin   = 525 - 480 - 35,
 796                 .sync           = 0,
 797         },
 798 #else
 799         {
 800                 /* HannStar HSD100PXN1
 801                  * 202.7m mm x 152.06 mm display area.
 802                  */
 803                 .name           = "HSD100PXN1",
 804                 .refresh        = 60,
 805                 .xres           = 1024,
 806                 .yres           = 768,
 807                 .pixclock       = KHZ2PICOS(65000),
 808                 .left_margin    = 0,
 809                 .hsync_len      = 0,
 810                 .right_margin   = 320,
 811                 .upper_margin   = 0,
 812                 .vsync_len      = 0,
 813                 .lower_margin   = 38,
 814                 .sync           = FB_SYNC_CLK_LAT_FALL,
 815         },
 816 #endif
 817         {
 818                 /* unnamed entry for assigning parameters parsed from 'video_mode' string */
 819                 .refresh        = 60,
 820                 .left_margin    = 48,
 821                 .hsync_len      = 96,
 822                 .right_margin   = 16,
 823                 .upper_margin   = 31,
 824                 .vsync_len      = 2,
 825                 .lower_margin   = 12,
 826                 .sync           = FB_SYNC_CLK_LAT_FALL,
 827         },
 828 };
 829
 830 static int lcd_enabled = 1;
 831 static int lcd_bl_polarity;
 832
 833 static int lcd_backlight_polarity(void)
 834 {
 835         return lcd_bl_polarity;
 836 }
 837
 838 void lcd_enable(void)
 839 {
 840         /* HACK ALERT:
 841          * global variable from common/lcd.c
 842          * Set to 0 here to prevent messages from going to LCD
 843          * rather than serial console
 844          */
 845         lcd_is_enabled = 0;
 846
 847         karo_load_splashimage(1);
 848
 849         if (lcd_enabled) {
 850                 debug("Switching LCD on\n");
 851                 gpio_set_value(TX6_LCD_PWR_GPIO, 1);
 852                 udelay(100);
 853                 gpio_set_value(TX6_LCD_RST_GPIO, 1);
 854                 udelay(300000);
 855                 gpio_set_value(TX6_LCD_BACKLIGHT_GPIO, lcd_backlight_polarity());
 856         }
 857 }
 858
 859 void lcd_disable(void)
 860 {
 861         if (lcd_enabled) {
 862                 printf("Disabling LCD\n");
 863                 ipuv3_fb_shutdown();
 864         }
 865 }
 866
 867 void lcd_panel_disable(void)
 868 {
 869         if (lcd_enabled) {
 870                 debug("Switching LCD off\n");
 871                 gpio_set_value(TX6_LCD_BACKLIGHT_GPIO, !lcd_backlight_polarity());
 872                 gpio_set_value(TX6_LCD_RST_GPIO, 0);
 873                 gpio_set_value(TX6_LCD_PWR_GPIO, 0);
 874         }
 875 }
 876
 877 static const iomux_v3_cfg_t stk5_lcd_pads[] = {
 878         /* LCD RESET */
 879         MX6_PAD_EIM_D29__GPIO_3_29,
 880         /* LCD POWER_ENABLE */
 881         MX6_PAD_EIM_EB3__GPIO_2_31,
 882         /* LCD Backlight (PWM) */
 883         MX6_PAD_GPIO_1__GPIO_1_1,
 884
 885         /* Display */
 886         MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
 887         MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
 888         MX6_PAD_DI0_PIN2__IPU1_DI0_PIN2,
 889         MX6_PAD_DI0_PIN3__IPU1_DI0_PIN3,
 890         MX6_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0,
 891         MX6_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1,
 892         MX6_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2,
 893         MX6_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3,
 894         MX6_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4,
 895         MX6_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5,
 896         MX6_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6,
 897         MX6_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7,
 898         MX6_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8,
 899         MX6_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9,
 900         MX6_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10,
 901         MX6_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11,
 902         MX6_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12,
 903         MX6_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13,
 904         MX6_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14,
 905         MX6_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15,
 906         MX6_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16,
 907         MX6_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17,
 908         MX6_PAD_DISP0_DAT18__IPU1_DISP0_DAT_18,
 909         MX6_PAD_DISP0_DAT19__IPU1_DISP0_DAT_19,
 910         MX6_PAD_DISP0_DAT20__IPU1_DISP0_DAT_20,
 911         MX6_PAD_DISP0_DAT21__IPU1_DISP0_DAT_21,
 912         MX6_PAD_DISP0_DAT22__IPU1_DISP0_DAT_22,
 913         MX6_PAD_DISP0_DAT23__IPU1_DISP0_DAT_23,
 914 };
 915
 916 static const struct gpio stk5_lcd_gpios[] = {
 917         { TX6_LCD_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD RESET", },
 918         { TX6_LCD_PWR_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD POWER", },
 919         { TX6_LCD_BACKLIGHT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
 920 };
 921
 922 void lcd_ctrl_init(void *lcdbase)
 923 {
 924         int color_depth = 24;
 925         const char *video_mode = karo_get_vmode(getenv("video_mode"));
 926         const char *vm;
 927         unsigned long val;
 928         int refresh = 60;
 929         struct fb_videomode *p = &tx6_fb_modes[0];
 930         struct fb_videomode fb_mode;
 931         int xres_set = 0, yres_set = 0, bpp_set = 0, refresh_set = 0;
 932         int pix_fmt;
 933         int lcd_bus_width;
 934         unsigned long di_clk_rate = 65000000;
 935
 936         if (!lcd_enabled) {
 937                 debug("LCD disabled\n");
 938                 return;
 939         }
 940
 941         if (had_ctrlc() || (wrsr & WRSR_TOUT)) {
 942                 debug("Disabling LCD\n");
 943                 lcd_enabled = 0;
 944                 setenv("splashimage", NULL);
 945                 return;
 946         }
 947
 948         karo_fdt_move_fdt();
 949         lcd_bl_polarity = karo_fdt_get_backlight_polarity(working_fdt);
 950
 951         if (video_mode == NULL) {
 952                 debug("Disabling LCD\n");
 953                 lcd_enabled = 0;
 954                 return;
 955         }
 956         vm = video_mode;
 957         if (karo_fdt_get_fb_mode(working_fdt, video_mode, &fb_mode) == 0) {
 958                 p = &fb_mode;
 959                 debug("Using video mode from FDT\n");
 960                 vm += strlen(vm);
 961                 if (fb_mode.xres > panel_info.vl_col ||
 962                         fb_mode.yres > panel_info.vl_row) {
 963                         printf("video resolution from DT: %dx%d exceeds hardware limits: %dx%d\n",
 964                                 fb_mode.xres, fb_mode.yres,
 965                                 panel_info.vl_col, panel_info.vl_row);
 966                         lcd_enabled = 0;
 967                         return;
 968                 }
 969         }
 970         if (p->name != NULL)
 971                 debug("Trying compiled-in video modes\n");
 972         while (p->name != NULL) {
 973                 if (strcmp(p->name, vm) == 0) {
 974                         debug("Using video mode: '%s'\n", p->name);
 975                         vm += strlen(vm);
 976                         break;
 977                 }
 978                 p++;
 979         }
 980         if (*vm != '\0')
 981                 debug("Trying to decode video_mode: '%s'\n", vm);
 982         while (*vm != '\0') {
 983                 if (*vm >= '0' && *vm <= '9') {
 984                         char *end;
 985
 986                         val = simple_strtoul(vm, &end, 0);
 987                         if (end > vm) {
 988                                 if (!xres_set) {
 989                                         if (val > panel_info.vl_col)
 990                                                 val = panel_info.vl_col;
 991                                         p->xres = val;
 992                                         panel_info.vl_col = val;
 993                                         xres_set = 1;
 994                                 } else if (!yres_set) {
 995                                         if (val > panel_info.vl_row)
 996                                                 val = panel_info.vl_row;
 997                                         p->yres = val;
 998                                         panel_info.vl_row = val;
 999                                         yres_set = 1;
1000                                 } else if (!bpp_set) {
1001                                         switch (val) {
1002                                         case 32:
1003                                         case 24:
1004                                                 if (is_lvds())
1005                                                         pix_fmt = IPU_PIX_FMT_LVDS888;
1006                                                 /* fallthru */
1007                                         case 16:
1008                                         case 8:
1009                                                 color_depth = val;
1010                                                 break;
1011
1012                                         case 18:
1013                                                 if (is_lvds()) {
1014                                                         color_depth = val;
1015                                                         break;
1016                                                 }
1017                                                 /* fallthru */
1018                                         default:
1019                                                 printf("Invalid color depth: '%.*s' in video_mode; using default: '%u'\n",
1020                                                         end - vm, vm, color_depth);
1021                                         }
1022                                         bpp_set = 1;
1023                                 } else if (!refresh_set) {
1024                                         refresh = val;
1025                                         refresh_set = 1;
1026                                 }
1027                         }
1028                         vm = end;
1029                 }
1030                 switch (*vm) {
1031                 case '@':
1032                         bpp_set = 1;
1033                         /* fallthru */
1034                 case '-':
1035                         yres_set = 1;
1036                         /* fallthru */
1037                 case 'x':
1038                         xres_set = 1;
1039                         /* fallthru */
1040                 case 'M':
1041                 case 'R':
1042                         vm++;
1043                         break;
1044
1045                 default:
1046                         if (*vm != '\0')
1047                                 vm++;
1048                 }
1049         }
1050         if (p->xres == 0 || p->yres == 0) {
1051                 printf("Invalid video mode: %s\n", getenv("video_mode"));
1052                 lcd_enabled = 0;
1053                 printf("Supported video modes are:");
1054                 for (p = &tx6_fb_modes[0]; p->name != NULL; p++) {
1055                         printf(" %s", p->name);
1056                 }
1057                 printf("\n");
1058                 return;
1059         }
1060         if (p->xres > panel_info.vl_col || p->yres > panel_info.vl_row) {
1061                 printf("video resolution: %dx%d exceeds hardware limits: %dx%d\n",
1062                         p->xres, p->yres, panel_info.vl_col, panel_info.vl_row);
1063                 lcd_enabled = 0;
1064                 return;
1065         }
1066         panel_info.vl_col = p->xres;
1067         panel_info.vl_row = p->yres;
1068
1069         switch (color_depth) {
1070         case 8:
1071                 panel_info.vl_bpix = LCD_COLOR8;
1072                 break;
1073         case 16:
1074                 panel_info.vl_bpix = LCD_COLOR16;
1075                 break;
1076         default:
1077                 panel_info.vl_bpix = LCD_COLOR24;
1078         }
1079
1080         p->pixclock = KHZ2PICOS(refresh *
1081                 (p->xres + p->left_margin + p->right_margin + p->hsync_len) *
1082                 (p->yres + p->upper_margin + p->lower_margin + p->vsync_len) /
1083                                 1000);
1084         debug("Pixel clock set to %lu.%03lu MHz\n",
1085                 PICOS2KHZ(p->pixclock) / 1000, PICOS2KHZ(p->pixclock) % 1000);
1086
1087         if (p != &fb_mode) {
1088                 int ret;
1089
1090                 debug("Creating new display-timing node from '%s'\n",
1091                         video_mode);
1092                 ret = karo_fdt_create_fb_mode(working_fdt, video_mode, p);
1093                 if (ret)
1094                         printf("Failed to create new display-timing node from '%s': %d\n",
1095                                 video_mode, ret);
1096         }
1097
1098         gpio_request_array(stk5_lcd_gpios, ARRAY_SIZE(stk5_lcd_gpios));
1099         imx_iomux_v3_setup_multiple_pads(stk5_lcd_pads,
1100                                         ARRAY_SIZE(stk5_lcd_pads));
1101
1102         lcd_bus_width = karo_fdt_get_lcd_bus_width(working_fdt, 24);
1103         switch (lcd_bus_width) {
1104         case 24:
1105                 pix_fmt = is_lvds() ? IPU_PIX_FMT_LVDS888 : IPU_PIX_FMT_RGB24;
1106                 break;
1107
1108         case 18:
1109                 pix_fmt = is_lvds() ? IPU_PIX_FMT_LVDS666 : IPU_PIX_FMT_RGB666;
1110                 break;
1111
1112         case 16:
1113                 if (!is_lvds()) {
1114                         pix_fmt = IPU_PIX_FMT_RGB565;
1115                         break;
1116                 }
1117                 /* fallthru */
1118         default:
1119                 lcd_enabled = 0;
1120                 printf("Invalid %s bus width: %d\n", is_lvds() ? "LVDS" : "LCD",
1121                         lcd_bus_width);
1122                 return;
1123         }
1124         if (is_lvds()) {
1125                 int lvds_mapping = karo_fdt_get_lvds_mapping(working_fdt, 0);
1126                 int lvds_chan_mask = karo_fdt_get_lvds_channels(working_fdt);
1127                 uint32_t gpr2;
1128
1129                 if (lvds_chan_mask == 0) {
1130                         printf("No LVDS channel active\n");
1131                         lcd_enabled = 0;
1132                         return;
1133                 }
1134
1135                 gpr2 = (lvds_mapping << 6) | (lvds_mapping << 8);
1136                 if (lcd_bus_width == 24)
1137                         gpr2 |= (1 << 5) | (1 << 7);
1138                 gpr2 |= (lvds_chan_mask & 1) ? 1 << 0 : 0;
1139                 gpr2 |= (lvds_chan_mask & 2) ? 3 << 2 : 0;
1140                 debug("writing %08x to GPR2[%08x]\n", gpr2, IOMUXC_BASE_ADDR + 8);
1141                 writel(gpr2, IOMUXC_BASE_ADDR + 8);
1142         }
1143         if (karo_load_splashimage(0) == 0) {
1144                 int ret;
1145
1146                 debug("Initializing LCD controller\n");
1147                 ret = ipuv3_fb_init(p, 0, pix_fmt, DI_PCLK_PLL3, di_clk_rate, -1);
1148                 if (ret) {
1149                         printf("Failed to initialize FB driver: %d\n", ret);
1150                         lcd_enabled = 0;
1151                 }
1152         } else {
1153                 debug("Skipping initialization of LCD controller\n");
1154         }
1155 }
1156 #else
1157 #define lcd_enabled 0
1158 #endif /* CONFIG_LCD */
1159
1160 static void stk5_board_init(void)
1161 {
1162         gpio_request_array(stk5_gpios, ARRAY_SIZE(stk5_gpios));
1163         imx_iomux_v3_setup_multiple_pads(stk5_pads, ARRAY_SIZE(stk5_pads));
1164 }
1165
1166 static void stk5v3_board_init(void)
1167 {
1168         stk5_board_init();
1169 }
1170
1171 static void stk5v5_board_init(void)
1172 {
1173         stk5_board_init();
1174
1175         gpio_request_one(IMX_GPIO_NR(4, 21), GPIOF_OUTPUT_INIT_HIGH,
1176                         "Flexcan Transceiver");
1177         imx_iomux_v3_setup_pad(MX6_PAD_DISP0_DAT0__GPIO_4_21);
1178 }
1179
1180 static void tx6qdl_set_cpu_clock(void)
1181 {
1182         unsigned long cpu_clk = getenv_ulong("cpu_clk", 10, 0);
1183
1184         if (had_ctrlc() || (wrsr & WRSR_TOUT))
1185                 return;
1186
1187         if (cpu_clk == 0 || cpu_clk == mxc_get_clock(MXC_ARM_CLK) / 1000000)
1188                 return;
1189
1190         if (mxc_set_clock(CONFIG_SYS_MX6_HCLK, cpu_clk, MXC_ARM_CLK) == 0) {
1191                 cpu_clk = mxc_get_clock(MXC_ARM_CLK);
1192                 printf("CPU clock set to %lu.%03lu MHz\n",
1193                         cpu_clk / 1000000, cpu_clk / 1000 % 1000);
1194         } else {
1195                 printf("Error: Failed to set CPU clock to %lu MHz\n", cpu_clk);
1196         }
1197 }
1198
1199 static void tx6_init_mac(void)
1200 {
1201         u8 mac[ETH_ALEN];
1202
1203         imx_get_mac_from_fuse(-1, mac);
1204         if (!is_valid_ether_addr(mac)) {
1205                 printf("No valid MAC address programmed\n");
1206                 return;
1207         }
1208
1209         printf("MAC addr from fuse: %pM\n", mac);
1210         eth_setenv_enetaddr("ethaddr", mac);
1211 }
1212
1213 int board_late_init(void)
1214 {
1215         int ret = 0;
1216         const char *baseboard;
1217
1218         tx6qdl_set_cpu_clock();
1219         karo_fdt_move_fdt();
1220
1221         baseboard = getenv("baseboard");
1222         if (!baseboard)
1223                 goto exit;
1224
1225         printf("Baseboard: %s\n", baseboard);
1226
1227         if (strncmp(baseboard, "stk5", 4) == 0) {
1228                 if ((strlen(baseboard) == 4) ||
1229                         strcmp(baseboard, "stk5-v3") == 0) {
1230                         stk5v3_board_init();
1231                 } else if (strcmp(baseboard, "stk5-v5") == 0) {
1232                         const char *otg_mode = getenv("otg_mode");
1233
1234                         if (otg_mode && strcmp(otg_mode, "host") == 0) {
1235                                 printf("otg_mode='%s' is incompatible with baseboard %s; setting to 'none'\n",
1236                                         otg_mode, baseboard);
1237                                 setenv("otg_mode", "none");
1238                         }
1239                         stk5v5_board_init();
1240                 } else {
1241                         printf("WARNING: Unsupported STK5 board rev.: %s\n",
1242                                 baseboard + 4);
1243                 }
1244         } else {
1245                 printf("WARNING: Unsupported baseboard: '%s'\n",
1246                         baseboard);
1247                 ret = -EINVAL;
1248         }
1249
1250 exit:
1251         tx6_init_mac();
1252
1253         gpio_set_value(TX6_RESET_OUT_GPIO, 1);
1254         clear_ctrlc();
1255         return ret;
1256 }
1257
1258 int checkboard(void)
1259 {
1260         u32 cpurev = get_cpu_rev();
1261         int cpu_variant = (cpurev >> 12) & 0xff;
1262
1263         tx6qdl_print_cpuinfo();
1264
1265         printf("Board: Ka-Ro TX6%c-%d%d2%d\n",
1266                 cpu_variant == MXC_CPU_MX6Q ? 'Q' : 'U',
1267                 cpu_variant == MXC_CPU_MX6Q ? 1 : 8,
1268                 is_lvds(), 1 - PHYS_SDRAM_1_WIDTH / 64);
1269
1270         return 0;
1271 }
1272
1273 #ifdef CONFIG_SERIAL_TAG
1274 void get_board_serial(struct tag_serialnr *serialnr)
1275 {
1276         struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
1277         struct fuse_bank0_regs *fuse = (void *)ocotp->bank[0].fuse_regs;
1278
1279         serialnr->low = readl(&fuse->cfg0);
1280         serialnr->high = readl(&fuse->cfg1);
1281 }
1282 #endif
1283
1284 #ifdef CONFIG_OF_BOARD_SETUP
1285 static const char *tx6_touchpanels[] = {
1286         "ti,tsc2007",
1287         "edt,edt-ft5x06",
1288         "eeti,egalax_ts",
1289 };
1290
1291 void ft_board_setup(void *blob, bd_t *bd)
1292 {
1293         const char *baseboard = getenv("baseboard");
1294         int stk5_v5 = baseboard != NULL && (strcmp(baseboard, "stk5-v5") == 0);
1295         const char *video_mode = karo_get_vmode(getenv("video_mode"));
1296         int ret;
1297
1298         ret = fdt_increase_size(blob, 4096);
1299         if (ret)
1300                 printf("Failed to increase FDT size: %s\n", fdt_strerror(ret));
1301
1302         if (stk5_v5)
1303                 karo_fdt_enable_node(blob, "stk5led", 0);
1304
1305         fdt_fixup_ethernet(blob);
1306
1307         karo_fdt_fixup_touchpanel(blob, tx6_touchpanels,
1308                                 ARRAY_SIZE(tx6_touchpanels));
1309         karo_fdt_fixup_usb_otg(blob, "usbotg", "fsl,usbphy");
1310         karo_fdt_fixup_flexcan(blob, stk5_v5);
1311
1312         karo_fdt_update_fb_mode(blob, video_mode);
1313 }
1314 #endif /* CONFIG_OF_BOARD_SETUP */