board/embest/mx6boards/mx6boards.c

   1 /*
   2  * Copyright (C) 2014 Eukréa Electromatique
   3  * Author: Eric Bénard <eric@eukrea.com>
   4  *         Fabio Estevam <fabio.estevam@freescale.com>
   5  *         Jon Nettleton <jon.nettleton@gmail.com>
   6  *
   7  * based on sabresd.c which is :
   8  * Copyright (C) 2012 Freescale Semiconductor, Inc.
   9  * and on hummingboard.c which is :
  10  * Copyright (C) 2013 SolidRun ltd.
  11  * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>.
  12  *
  13  * SPDX-License-Identifier:     GPL-2.0+
  14  */
  15
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/sys_proto.h>
  18 #include <asm/arch/imx-regs.h>
  19 #include <asm/arch/iomux.h>
  20 #include <asm/arch/mx6-pins.h>
  21 #include <asm/errno.h>
  22 #include <asm/gpio.h>
  23 #include <asm/imx-common/iomux-v3.h>
  24 #include <asm/imx-common/boot_mode.h>
  25 #include <asm/imx-common/mxc_i2c.h>
  26 #include <asm/imx-common/spi.h>
  27 #include <asm/imx-common/video.h>
  28 #include <i2c.h>
  29 #include <mmc.h>
  30 #include <fsl_esdhc.h>
  31 #include <miiphy.h>
  32 #include <netdev.h>
  33 #include <asm/arch/mxc_hdmi.h>
  34 #include <asm/arch/crm_regs.h>
  35 #include <linux/fb.h>
  36 #include <ipu_pixfmt.h>
  37 #include <asm/io.h>
  38 #include <asm/arch/sys_proto.h>
  39 DECLARE_GLOBAL_DATA_PTR;
  40
  41 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  42         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  43         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  44
  45 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |                    \
  46         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  47         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  48
  49 #define USDHC_PAD_CLK_CTRL (PAD_CTL_SPEED_LOW |         \
  50         PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST |                  \
  51         PAD_CTL_HYS)
  52
  53 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  54         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  55
  56 #define ENET_PAD_CTRL_PD  (PAD_CTL_PUS_100K_DOWN |              \
  57         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  58
  59 #define ENET_PAD_CTRL_CLK  ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \
  60         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
  61
  62 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP |                  \
  63         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  64         PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  65
  66 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED | \
  67                       PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
  68
  69 static int board_type = -1;
  70 #define BOARD_IS_MARSBOARD      0
  71 #define BOARD_IS_RIOTBOARD      1
  72
  73 int dram_init(void)
  74 {
  75         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
  76
  77         return 0;
  78 }
  79
  80 static iomux_v3_cfg_t const uart2_pads[] = {
  81         MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  82         MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  83 };
  84
  85 static void setup_iomux_uart(void)
  86 {
  87         imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
  88 }
  89
  90 iomux_v3_cfg_t const enet_pads[] = {
  91         MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
  92         MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
  93         /* GPIO16 -> AR8035 25MHz */
  94         MX6_PAD_GPIO_16__ENET_REF_CLK | MUX_PAD_CTRL(NO_PAD_CTRL),
  95         MX6_PAD_RGMII_TXC__RGMII_TXC | MUX_PAD_CTRL(NO_PAD_CTRL),
  96         MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  97         MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  98         MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
  99         MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 100         MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
 101         /* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
 102         MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK),
 103         MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
 104         MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
 105         MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
 106         MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 107         MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 108         MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
 109         /* AR8035 PHY Reset */
 110         MX6_PAD_EIM_D31__GPIO3_IO31 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
 111         /* AR8035 PHY Interrupt */
 112         MX6_PAD_ENET_TX_EN__GPIO1_IO28 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 113 };
 114
 115 static void setup_iomux_enet(void)
 116 {
 117         imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
 118
 119         /* Reset AR8035 PHY */
 120         gpio_direction_output(IMX_GPIO_NR(3, 31) , 0);
 121         mdelay(2);
 122         gpio_set_value(IMX_GPIO_NR(3, 31), 1);
 123 }
 124
 125 int mx6_rgmii_rework(struct phy_device *phydev)
 126 {
 127         /* from linux/arch/arm/mach-imx/mach-imx6q.c :
 128          * Ar803x phy SmartEEE feature cause link status generates glitch,
 129          * which cause ethernet link down/up issue, so disable SmartEEE
 130          */
 131         phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
 132         phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x805d);
 133         phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4003);
 134
 135         return 0;
 136 }
 137
 138 int board_phy_config(struct phy_device *phydev)
 139 {
 140         mx6_rgmii_rework(phydev);
 141
 142         if (phydev->drv->config)
 143                 phydev->drv->config(phydev);
 144
 145         return 0;
 146 }
 147
 148 iomux_v3_cfg_t const usdhc2_pads[] = {
 149         MX6_PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
 150         MX6_PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 151         MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 152         MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 153         MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 154         MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 155         MX6_PAD_GPIO_2__GPIO1_IO02 | MUX_PAD_CTRL(NO_PAD_CTRL), /* WP */
 156         MX6_PAD_GPIO_4__GPIO1_IO04 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 157 };
 158
 159 iomux_v3_cfg_t const usdhc3_pads[] = {
 160         MX6_PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
 161         MX6_PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 162         MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 163         MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 164         MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 165         MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 166 };
 167
 168 iomux_v3_cfg_t const riotboard_usdhc3_pads[] = {
 169         MX6_PAD_SD3_DAT4__GPIO7_IO01 | MUX_PAD_CTRL(NO_PAD_CTRL), /* WP */
 170         MX6_PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 171 };
 172
 173 iomux_v3_cfg_t const usdhc4_pads[] = {
 174         MX6_PAD_SD4_CLK__SD4_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
 175         MX6_PAD_SD4_CMD__SD4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 176         MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 177         MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 178         MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 179         MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 180         /* eMMC RST */
 181         MX6_PAD_NANDF_ALE__GPIO6_IO08 | MUX_PAD_CTRL(NO_PAD_CTRL),
 182 };
 183
 184 #ifdef CONFIG_FSL_ESDHC
 185 struct fsl_esdhc_cfg usdhc_cfg[3] = {
 186         {USDHC2_BASE_ADDR},
 187         {USDHC3_BASE_ADDR},
 188         {USDHC4_BASE_ADDR},
 189 };
 190
 191 #define USDHC2_CD_GPIO  IMX_GPIO_NR(1, 4)
 192 #define USDHC3_CD_GPIO  IMX_GPIO_NR(7, 0)
 193
 194 int board_mmc_getcd(struct mmc *mmc)
 195 {
 196         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 197         int ret = 0;
 198
 199         switch (cfg->esdhc_base) {
 200         case USDHC2_BASE_ADDR:
 201                 ret = !gpio_get_value(USDHC2_CD_GPIO);
 202                 break;
 203         case USDHC3_BASE_ADDR:
 204                 if (board_type == BOARD_IS_RIOTBOARD)
 205                         ret = !gpio_get_value(USDHC3_CD_GPIO);
 206                 else if (board_type == BOARD_IS_MARSBOARD)
 207                         ret = 1; /* eMMC/uSDHC3 is always present */
 208                 break;
 209         case USDHC4_BASE_ADDR:
 210                 ret = 1; /* eMMC/uSDHC4 is always present */
 211                 break;
 212         }
 213
 214         return ret;
 215 }
 216
 217 int board_mmc_init(bd_t *bis)
 218 {
 219         int ret;
 220         int i;
 221
 222         /*
 223          * According to the board_mmc_init() the following map is done:
 224          * (U-boot device node)    (Physical Port)
 225          * ** RiOTboard :
 226          * mmc0                    SDCard slot (bottom)
 227          * mmc1                    uSDCard slot (top)
 228          * mmc2                    eMMC
 229          * ** MarSBoard :
 230          * mmc0                    uSDCard slot (bottom)
 231          * mmc1                    eMMC
 232          */
 233         for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 234                 switch (i) {
 235                 case 0:
 236                         imx_iomux_v3_setup_multiple_pads(
 237                                 usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
 238                         gpio_direction_input(USDHC2_CD_GPIO);
 239                         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 240                         usdhc_cfg[0].max_bus_width = 4;
 241                         break;
 242                 case 1:
 243                         imx_iomux_v3_setup_multiple_pads(
 244                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 245                         if (board_type == BOARD_IS_RIOTBOARD) {
 246                                 imx_iomux_v3_setup_multiple_pads(
 247                                         riotboard_usdhc3_pads,
 248                                         ARRAY_SIZE(riotboard_usdhc3_pads));
 249                                 gpio_direction_input(USDHC3_CD_GPIO);
 250                         } else {
 251                                 gpio_direction_output(IMX_GPIO_NR(7, 8) , 0);
 252                                 udelay(250);
 253                                 gpio_set_value(IMX_GPIO_NR(7, 8), 1);
 254                         }
 255                         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 256                         usdhc_cfg[1].max_bus_width = 4;
 257                         break;
 258                 case 2:
 259                         imx_iomux_v3_setup_multiple_pads(
 260                                 usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
 261                         usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 262                         usdhc_cfg[2].max_bus_width = 4;
 263                         gpio_direction_output(IMX_GPIO_NR(6, 8) , 0);
 264                         udelay(250);
 265                         gpio_set_value(IMX_GPIO_NR(6, 8), 1);
 266                         break;
 267                 default:
 268                         printf("Warning: you configured more USDHC controllers"
 269                                "(%d) then supported by the board (%d)\n",
 270                                i + 1, CONFIG_SYS_FSL_USDHC_NUM);
 271                         return -EINVAL;
 272                 }
 273
 274                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 275                 if (ret)
 276                         return ret;
 277         }
 278
 279         return 0;
 280 }
 281 #endif
 282
 283 #ifdef CONFIG_MXC_SPI
 284 iomux_v3_cfg_t const ecspi1_pads[] = {
 285         MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 286         MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
 287         MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
 288         MX6_PAD_EIM_EB2__GPIO2_IO30 | MUX_PAD_CTRL(NO_PAD_CTRL),
 289 };
 290
 291 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 292 {
 293         return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(2, 30)) : -1;
 294 }
 295
 296 static void setup_spi(void)
 297 {
 298         imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
 299 }
 300 #endif
 301
 302 struct i2c_pads_info i2c_pad_info1 = {
 303         .scl = {
 304                 .i2c_mode = MX6_PAD_CSI0_DAT9__I2C1_SCL
 305                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 306                 .gpio_mode = MX6_PAD_CSI0_DAT9__GPIO5_IO27
 307                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 308                 .gp = IMX_GPIO_NR(5, 27)
 309         },
 310         .sda = {
 311                 .i2c_mode = MX6_PAD_CSI0_DAT8__I2C1_SDA
 312                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 313                 .gpio_mode = MX6_PAD_CSI0_DAT8__GPIO5_IO26
 314                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 315                 .gp = IMX_GPIO_NR(5, 26)
 316         }
 317 };
 318
 319 struct i2c_pads_info i2c_pad_info2 = {
 320         .scl = {
 321                 .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL
 322                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 323                 .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12
 324                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 325                 .gp = IMX_GPIO_NR(4, 12)
 326         },
 327         .sda = {
 328                 .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA
 329                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 330                 .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13
 331                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 332                 .gp = IMX_GPIO_NR(4, 13)
 333         }
 334 };
 335
 336 struct i2c_pads_info i2c_pad_info3 = {
 337         .scl = {
 338                 .i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL
 339                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 340                 .gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05
 341                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 342                 .gp = IMX_GPIO_NR(1, 5)
 343         },
 344         .sda = {
 345                 .i2c_mode = MX6_PAD_GPIO_6__I2C3_SDA
 346                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 347                 .gpio_mode = MX6_PAD_GPIO_6__GPIO1_IO06
 348                                 | MUX_PAD_CTRL(I2C_PAD_CTRL),
 349                 .gp = IMX_GPIO_NR(1, 6)
 350         }
 351 };
 352
 353 iomux_v3_cfg_t const tft_pads_riot[] = {
 354         /* LCD_PWR_EN */
 355         MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
 356         /* TOUCH_INT */
 357         MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
 358         /* LED_PWR_EN */
 359         MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
 360         /* BL LEVEL */
 361         MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
 362 };
 363
 364 iomux_v3_cfg_t const tft_pads_mars[] = {
 365         /* LCD_PWR_EN */
 366         MX6_PAD_ENET_TXD1__GPIO1_IO29 | MUX_PAD_CTRL(NO_PAD_CTRL),
 367         /* TOUCH_INT */
 368         MX6_PAD_NANDF_CS1__GPIO6_IO14 | MUX_PAD_CTRL(NO_PAD_CTRL),
 369         /* LED_PWR_EN */
 370         MX6_PAD_NANDF_CS2__GPIO6_IO15 | MUX_PAD_CTRL(NO_PAD_CTRL),
 371         /* BL LEVEL (PWM4) */
 372         MX6_PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL),
 373 };
 374
 375 #if defined(CONFIG_VIDEO_IPUV3)
 376
 377 static void enable_lvds(struct display_info_t const *dev)
 378 {
 379         struct iomuxc *iomux = (struct iomuxc *)
 380                                 IOMUXC_BASE_ADDR;
 381         setbits_le32(&iomux->gpr[2],
 382                      IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT);
 383         /* set backlight level to ON */
 384         if (board_type == BOARD_IS_RIOTBOARD)
 385                 gpio_direction_output(IMX_GPIO_NR(1, 18) , 1);
 386         else if (board_type == BOARD_IS_MARSBOARD)
 387                 gpio_direction_output(IMX_GPIO_NR(2, 10) , 1);
 388 }
 389
 390 static void disable_lvds(struct display_info_t const *dev)
 391 {
 392         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 393
 394         /* set backlight level to OFF */
 395         if (board_type == BOARD_IS_RIOTBOARD)
 396                 gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
 397         else if (board_type == BOARD_IS_MARSBOARD)
 398                 gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
 399
 400         clrbits_le32(&iomux->gpr[2],
 401                      IOMUXC_GPR2_LVDS_CH0_MODE_MASK);
 402 }
 403
 404 static void do_enable_hdmi(struct display_info_t const *dev)
 405 {
 406         disable_lvds(dev);
 407         imx_enable_hdmi_phy();
 408 }
 409
 410 static int detect_i2c(struct display_info_t const *dev)
 411 {
 412         return (0 == i2c_set_bus_num(dev->bus)) &&
 413                 (0 == i2c_probe(dev->addr));
 414 }
 415
 416 struct display_info_t const displays[] = {{
 417         .bus    = -1,
 418         .addr   = 0,
 419         .pixfmt = IPU_PIX_FMT_RGB24,
 420         .detect = detect_hdmi,
 421         .enable = do_enable_hdmi,
 422         .mode   = {
 423                 .name           = "HDMI",
 424                 .refresh        = 60,
 425                 .xres           = 1024,
 426                 .yres           = 768,
 427                 .pixclock       = 15385,
 428                 .left_margin    = 220,
 429                 .right_margin   = 40,
 430                 .upper_margin   = 21,
 431                 .lower_margin   = 7,
 432                 .hsync_len      = 60,
 433                 .vsync_len      = 10,
 434                 .sync           = FB_SYNC_EXT,
 435                 .vmode          = FB_VMODE_NONINTERLACED
 436 } }, {
 437         .bus    = 2,
 438         .addr   = 0x1,
 439         .pixfmt = IPU_PIX_FMT_LVDS666,
 440         .detect = detect_i2c,
 441         .enable = enable_lvds,
 442         .mode   = {
 443                 .name           = "LCD8000-97C",
 444                 .refresh        = 60,
 445                 .xres           = 1024,
 446                 .yres           = 768,
 447                 .pixclock       = 15385,
 448                 .left_margin    = 100,
 449                 .right_margin   = 200,
 450                 .upper_margin   = 10,
 451                 .lower_margin   = 20,
 452                 .hsync_len      = 20,
 453                 .vsync_len      = 8,
 454                 .sync           = FB_SYNC_EXT,
 455                 .vmode          = FB_VMODE_NONINTERLACED
 456 } } };
 457 size_t display_count = ARRAY_SIZE(displays);
 458
 459 static void setup_display(void)
 460 {
 461         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 462         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 463         int reg;
 464
 465         enable_ipu_clock();
 466         imx_setup_hdmi();
 467
 468         /* Turn on LDB0, IPU,IPU DI0 clocks */
 469         setbits_le32(&mxc_ccm->CCGR3,
 470                      MXC_CCM_CCGR3_LDB_DI0_MASK);
 471
 472         /* set LDB0 clk select to 011/011 */
 473         clrsetbits_le32(&mxc_ccm->cs2cdr,
 474                         MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK,
 475                         (3 << MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET));
 476
 477         setbits_le32(&mxc_ccm->cscmr2,
 478                      MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV);
 479
 480         setbits_le32(&mxc_ccm->chsccdr,
 481                      (CHSCCDR_CLK_SEL_LDB_DI0
 482                      << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET));
 483
 484         reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
 485              | IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
 486              | IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
 487              | IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
 488              | IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
 489              | IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
 490              | IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
 491              | IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
 492         writel(reg, &iomux->gpr[2]);
 493
 494         clrsetbits_le32(&iomux->gpr[3],
 495                         IOMUXC_GPR3_LVDS0_MUX_CTL_MASK |
 496                         IOMUXC_GPR3_HDMI_MUX_CTL_MASK,
 497                         IOMUXC_GPR3_MUX_SRC_IPU1_DI0
 498                         << IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
 499 }
 500 #endif /* CONFIG_VIDEO_IPUV3 */
 501
 502 /*
 503  * Do not overwrite the console
 504  * Use always serial for U-Boot console
 505  */
 506 int overwrite_console(void)
 507 {
 508         return 1;
 509 }
 510
 511 int board_eth_init(bd_t *bis)
 512 {
 513         setup_iomux_enet();
 514
 515         return cpu_eth_init(bis);
 516 }
 517
 518 int board_early_init_f(void)
 519 {
 520         u32 cputype = cpu_type(get_cpu_rev());
 521
 522         switch (cputype) {
 523         case MXC_CPU_MX6SOLO:
 524                 board_type = BOARD_IS_RIOTBOARD;
 525                 break;
 526         case MXC_CPU_MX6D:
 527                 board_type = BOARD_IS_MARSBOARD;
 528                 break;
 529         }
 530
 531         setup_iomux_uart();
 532
 533         if (board_type == BOARD_IS_RIOTBOARD)
 534                 imx_iomux_v3_setup_multiple_pads(
 535                         tft_pads_riot, ARRAY_SIZE(tft_pads_riot));
 536         else if (board_type == BOARD_IS_MARSBOARD)
 537                 imx_iomux_v3_setup_multiple_pads(
 538                         tft_pads_mars, ARRAY_SIZE(tft_pads_mars));
 539 #if defined(CONFIG_VIDEO_IPUV3)
 540         /* power ON LCD */
 541         gpio_direction_output(IMX_GPIO_NR(1, 29) , 1);
 542         /* touch interrupt is an input */
 543         gpio_direction_input(IMX_GPIO_NR(6, 14));
 544         /* power ON backlight */
 545         gpio_direction_output(IMX_GPIO_NR(6, 15) , 1);
 546         /* set backlight level to off */
 547         if (board_type == BOARD_IS_RIOTBOARD)
 548                 gpio_direction_output(IMX_GPIO_NR(1, 18) , 0);
 549         else if (board_type == BOARD_IS_MARSBOARD)
 550                 gpio_direction_output(IMX_GPIO_NR(2, 10) , 0);
 551         setup_display();
 552 #endif
 553
 554         return 0;
 555 }
 556
 557 int board_init(void)
 558 {
 559         /* address of boot parameters */
 560         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 561         /* i2c1 : PMIC, Audio codec on RiOT, Expansion connector on MarS */
 562         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 563         /* i2c2 : HDMI EDID */
 564         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 565         /* i2c3 : LVDS, Expansion connector */
 566         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info3);
 567 #ifdef CONFIG_MXC_SPI
 568         setup_spi();
 569 #endif
 570         return 0;
 571 }
 572
 573 #ifdef CONFIG_CMD_BMODE
 574 static const struct boot_mode riotboard_boot_modes[] = {
 575         {"sd2",  MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
 576         {"sd3",  MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 577         {"emmc", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
 578         {NULL,   0},
 579 };
 580 static const struct boot_mode marsboard_boot_modes[] = {
 581         {"sd2",  MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
 582         {"emmc", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 583         {NULL,   0},
 584 };
 585 #endif
 586
 587 int board_late_init(void)
 588 {
 589 #ifdef CONFIG_CMD_BMODE
 590         if (board_type == BOARD_IS_RIOTBOARD)
 591                 add_board_boot_modes(riotboard_boot_modes);
 592         else if (board_type == BOARD_IS_RIOTBOARD)
 593                 add_board_boot_modes(marsboard_boot_modes);
 594 #endif
 595
 596         return 0;
 597 }
 598
 599 int checkboard(void)
 600 {
 601         puts("Board: ");
 602         if (board_type == BOARD_IS_MARSBOARD)
 603                 puts("MarSBoard\n");
 604         else if (board_type == BOARD_IS_RIOTBOARD)
 605                 puts("RIoTboard\n");
 606         else
 607                 printf("unknown - cputype : %02x\n", cpu_type(get_cpu_rev()));
 608
 609         return 0;
 610 }