board/wandboard/wandboard.c

   1 /*
   2  * Copyright (C) 2013 Freescale Semiconductor, Inc.
   3  * Copyright (C) 2014 O.S. Systems Software LTDA.
   4  *
   5  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/crm_regs.h>
  12 #include <asm/arch/iomux.h>
  13 #include <asm/arch/imx-regs.h>
  14 #include <asm/arch/mx6-pins.h>
  15 #include <asm/arch/mxc_hdmi.h>
  16 #include <asm/arch/sys_proto.h>
  17 #include <asm/gpio.h>
  18 #include <asm/imx-common/iomux-v3.h>
  19 #include <asm/imx-common/mxc_i2c.h>
  20 #include <asm/imx-common/boot_mode.h>
  21 #include <asm/imx-common/video.h>
  22 #include <asm/imx-common/sata.h>
  23 #include <asm/io.h>
  24 #include <linux/sizes.h>
  25 #include <common.h>
  26 #include <fsl_esdhc.h>
  27 #include <mmc.h>
  28 #include <miiphy.h>
  29 #include <netdev.h>
  30 #include <phy.h>
  31 #include <input.h>
  32 #include <i2c.h>
  33
  34 DECLARE_GLOBAL_DATA_PTR;
  35
  36 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  37         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  38         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  39
  40 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |                    \
  41         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  42         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  43
  44 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  45         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  46
  47 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP |                  \
  48         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  49         PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  50
  51 #define USDHC1_CD_GPIO          IMX_GPIO_NR(1, 2)
  52 #define USDHC3_CD_GPIO          IMX_GPIO_NR(3, 9)
  53 #define ETH_PHY_RESET           IMX_GPIO_NR(3, 29)
  54 #define REV_DETECTION           IMX_GPIO_NR(2, 28)
  55
  56 int dram_init(void)
  57 {
  58         gd->ram_size = imx_ddr_size();
  59
  60         return 0;
  61 }
  62
  63 static iomux_v3_cfg_t const uart1_pads[] = {
  64         IOMUX_PADS(PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
  65         IOMUX_PADS(PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL)),
  66 };
  67
  68 static iomux_v3_cfg_t const usdhc1_pads[] = {
  69         IOMUX_PADS(PAD_SD1_CLK__SD1_CLK    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  70         IOMUX_PADS(PAD_SD1_CMD__SD1_CMD    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  71         IOMUX_PADS(PAD_SD1_DAT0__SD1_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  72         IOMUX_PADS(PAD_SD1_DAT1__SD1_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  73         IOMUX_PADS(PAD_SD1_DAT2__SD1_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  74         IOMUX_PADS(PAD_SD1_DAT3__SD1_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  75         /* Carrier MicroSD Card Detect */
  76         IOMUX_PADS(PAD_GPIO_2__GPIO1_IO02  | MUX_PAD_CTRL(NO_PAD_CTRL)),
  77 };
  78
  79 static iomux_v3_cfg_t const usdhc3_pads[] = {
  80         IOMUX_PADS(PAD_SD3_CLK__SD3_CLK    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  81         IOMUX_PADS(PAD_SD3_CMD__SD3_CMD    | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  82         IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  83         IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  84         IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  85         IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
  86         /* SOM MicroSD Card Detect */
  87         IOMUX_PADS(PAD_EIM_DA9__GPIO3_IO09  | MUX_PAD_CTRL(NO_PAD_CTRL)),
  88 };
  89
  90 static iomux_v3_cfg_t const enet_pads[] = {
  91         IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  92         IOMUX_PADS(PAD_ENET_MDC__ENET_MDC    | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  93         IOMUX_PADS(PAD_RGMII_TXC__RGMII_TXC  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  94         IOMUX_PADS(PAD_RGMII_TD0__RGMII_TD0  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  95         IOMUX_PADS(PAD_RGMII_TD1__RGMII_TD1  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  96         IOMUX_PADS(PAD_RGMII_TD2__RGMII_TD2  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  97         IOMUX_PADS(PAD_RGMII_TD3__RGMII_TD3  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  98         IOMUX_PADS(PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
  99         IOMUX_PADS(PAD_ENET_REF_CLK__ENET_TX_CLK  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 100         IOMUX_PADS(PAD_RGMII_RXC__RGMII_RXC  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 101         IOMUX_PADS(PAD_RGMII_RD0__RGMII_RD0  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 102         IOMUX_PADS(PAD_RGMII_RD1__RGMII_RD1  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 103         IOMUX_PADS(PAD_RGMII_RD2__RGMII_RD2  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 104         IOMUX_PADS(PAD_RGMII_RD3__RGMII_RD3  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 105         IOMUX_PADS(PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 106         /* AR8031 PHY Reset */
 107         IOMUX_PADS(PAD_EIM_D29__GPIO3_IO29    | MUX_PAD_CTRL(NO_PAD_CTRL)),
 108 };
 109
 110 static iomux_v3_cfg_t const rev_detection_pad[] = {
 111         IOMUX_PADS(PAD_EIM_EB0__GPIO2_IO28  | MUX_PAD_CTRL(NO_PAD_CTRL)),
 112 };
 113
 114 static void setup_iomux_uart(void)
 115 {
 116         SETUP_IOMUX_PADS(uart1_pads);
 117 }
 118
 119 static void setup_iomux_enet(void)
 120 {
 121         SETUP_IOMUX_PADS(enet_pads);
 122
 123         /* Reset AR8031 PHY */
 124         gpio_direction_output(ETH_PHY_RESET, 0);
 125         mdelay(10);
 126         gpio_set_value(ETH_PHY_RESET, 1);
 127         udelay(100);
 128 }
 129
 130 static struct fsl_esdhc_cfg usdhc_cfg[2] = {
 131         {USDHC3_BASE_ADDR},
 132         {USDHC1_BASE_ADDR},
 133 };
 134
 135 int board_mmc_getcd(struct mmc *mmc)
 136 {
 137         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 138         int ret = 0;
 139
 140         switch (cfg->esdhc_base) {
 141         case USDHC1_BASE_ADDR:
 142                 ret = !gpio_get_value(USDHC1_CD_GPIO);
 143                 break;
 144         case USDHC3_BASE_ADDR:
 145                 ret = !gpio_get_value(USDHC3_CD_GPIO);
 146                 break;
 147         }
 148
 149         return ret;
 150 }
 151
 152 int board_mmc_init(bd_t *bis)
 153 {
 154         int ret;
 155         u32 index = 0;
 156
 157         /*
 158          * Following map is done:
 159          * (U-Boot device node)    (Physical Port)
 160          * mmc0                    SOM MicroSD
 161          * mmc1                    Carrier board MicroSD
 162          */
 163         for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
 164                 switch (index) {
 165                 case 0:
 166                         SETUP_IOMUX_PADS(usdhc3_pads);
 167                         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 168                         usdhc_cfg[0].max_bus_width = 4;
 169                         gpio_direction_input(USDHC3_CD_GPIO);
 170                         break;
 171                 case 1:
 172                         SETUP_IOMUX_PADS(usdhc1_pads);
 173                         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 174                         usdhc_cfg[1].max_bus_width = 4;
 175                         gpio_direction_input(USDHC1_CD_GPIO);
 176                         break;
 177                 default:
 178                         printf("Warning: you configured more USDHC controllers"
 179                                "(%d) then supported by the board (%d)\n",
 180                                index + 1, CONFIG_SYS_FSL_USDHC_NUM);
 181                         return -EINVAL;
 182                 }
 183
 184                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 185                 if (ret)
 186                         return ret;
 187         }
 188
 189         return 0;
 190 }
 191
 192 static int ar8031_phy_fixup(struct phy_device *phydev)
 193 {
 194         unsigned short val;
 195
 196         /* To enable AR8031 ouput a 125MHz clk from CLK_25M */
 197         phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x7);
 198         phy_write(phydev, MDIO_DEVAD_NONE, 0xe, 0x8016);
 199         phy_write(phydev, MDIO_DEVAD_NONE, 0xd, 0x4007);
 200
 201         val = phy_read(phydev, MDIO_DEVAD_NONE, 0xe);
 202         val &= 0xffe3;
 203         val |= 0x18;
 204         phy_write(phydev, MDIO_DEVAD_NONE, 0xe, val);
 205
 206         /* introduce tx clock delay */
 207         phy_write(phydev, MDIO_DEVAD_NONE, 0x1d, 0x5);
 208         val = phy_read(phydev, MDIO_DEVAD_NONE, 0x1e);
 209         val |= 0x0100;
 210         phy_write(phydev, MDIO_DEVAD_NONE, 0x1e, val);
 211
 212         return 0;
 213 }
 214
 215 int board_phy_config(struct phy_device *phydev)
 216 {
 217         ar8031_phy_fixup(phydev);
 218
 219         if (phydev->drv->config)
 220                 phydev->drv->config(phydev);
 221
 222         return 0;
 223 }
 224
 225 #if defined(CONFIG_VIDEO_IPUV3)
 226 struct i2c_pads_info mx6q_i2c2_pad_info = {
 227         .scl = {
 228                 .i2c_mode = MX6Q_PAD_KEY_COL3__I2C2_SCL
 229                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 230                 .gpio_mode = MX6Q_PAD_KEY_COL3__GPIO4_IO12
 231                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 232                 .gp = IMX_GPIO_NR(4, 12)
 233         },
 234         .sda = {
 235                 .i2c_mode = MX6Q_PAD_KEY_ROW3__I2C2_SDA
 236                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 237                 .gpio_mode = MX6Q_PAD_KEY_ROW3__GPIO4_IO13
 238                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 239                 .gp = IMX_GPIO_NR(4, 13)
 240         }
 241 };
 242
 243 struct i2c_pads_info mx6dl_i2c2_pad_info = {
 244         .scl = {
 245                 .i2c_mode = MX6DL_PAD_KEY_COL3__I2C2_SCL
 246                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 247                 .gpio_mode = MX6DL_PAD_KEY_COL3__GPIO4_IO12
 248                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 249                 .gp = IMX_GPIO_NR(4, 12)
 250         },
 251         .sda = {
 252                 .i2c_mode = MX6DL_PAD_KEY_ROW3__I2C2_SDA
 253                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 254                 .gpio_mode = MX6DL_PAD_KEY_ROW3__GPIO4_IO13
 255                         | MUX_PAD_CTRL(I2C_PAD_CTRL),
 256                 .gp = IMX_GPIO_NR(4, 13)
 257         }
 258 };
 259
 260 static iomux_v3_cfg_t const fwadapt_7wvga_pads[] = {
 261         IOMUX_PADS(PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK),
 262         IOMUX_PADS(PAD_DI0_PIN2__IPU1_DI0_PIN02), /* HSync */
 263         IOMUX_PADS(PAD_DI0_PIN3__IPU1_DI0_PIN03), /* VSync */
 264         IOMUX_PADS(PAD_DI0_PIN4__IPU1_DI0_PIN04 | MUX_PAD_CTRL(PAD_CTL_DSE_120ohm)), /* Contrast */
 265         IOMUX_PADS(PAD_DI0_PIN15__IPU1_DI0_PIN15), /* DISP0_DRDY */
 266         IOMUX_PADS(PAD_DISP0_DAT0__IPU1_DISP0_DATA00),
 267         IOMUX_PADS(PAD_DISP0_DAT1__IPU1_DISP0_DATA01),
 268         IOMUX_PADS(PAD_DISP0_DAT2__IPU1_DISP0_DATA02),
 269         IOMUX_PADS(PAD_DISP0_DAT3__IPU1_DISP0_DATA03),
 270         IOMUX_PADS(PAD_DISP0_DAT4__IPU1_DISP0_DATA04),
 271         IOMUX_PADS(PAD_DISP0_DAT5__IPU1_DISP0_DATA05),
 272         IOMUX_PADS(PAD_DISP0_DAT6__IPU1_DISP0_DATA06),
 273         IOMUX_PADS(PAD_DISP0_DAT7__IPU1_DISP0_DATA07),
 274         IOMUX_PADS(PAD_DISP0_DAT8__IPU1_DISP0_DATA08),
 275         IOMUX_PADS(PAD_DISP0_DAT9__IPU1_DISP0_DATA09),
 276         IOMUX_PADS(PAD_DISP0_DAT10__IPU1_DISP0_DATA10),
 277         IOMUX_PADS(PAD_DISP0_DAT11__IPU1_DISP0_DATA11),
 278         IOMUX_PADS(PAD_DISP0_DAT12__IPU1_DISP0_DATA12),
 279         IOMUX_PADS(PAD_DISP0_DAT13__IPU1_DISP0_DATA13),
 280         IOMUX_PADS(PAD_DISP0_DAT14__IPU1_DISP0_DATA14),
 281         IOMUX_PADS(PAD_DISP0_DAT15__IPU1_DISP0_DATA15),
 282         IOMUX_PADS(PAD_DISP0_DAT16__IPU1_DISP0_DATA16),
 283         IOMUX_PADS(PAD_DISP0_DAT17__IPU1_DISP0_DATA17),
 284         IOMUX_PADS(PAD_SD4_DAT2__GPIO2_IO10 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* DISP0_BKLEN */
 285         IOMUX_PADS(PAD_SD4_DAT3__GPIO2_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL)), /* DISP0_VDDEN */
 286 };
 287
 288 static void do_enable_hdmi(struct display_info_t const *dev)
 289 {
 290         imx_enable_hdmi_phy();
 291 }
 292
 293 static int detect_i2c(struct display_info_t const *dev)
 294 {
 295         return (0 == i2c_set_bus_num(dev->bus)) &&
 296                         (0 == i2c_probe(dev->addr));
 297 }
 298
 299 static void enable_fwadapt_7wvga(struct display_info_t const *dev)
 300 {
 301         SETUP_IOMUX_PADS(fwadapt_7wvga_pads);
 302
 303         gpio_direction_output(IMX_GPIO_NR(2, 10), 1);
 304         gpio_direction_output(IMX_GPIO_NR(2, 11), 1);
 305 }
 306
 307 struct display_info_t const displays[] = {{
 308         .bus    = -1,
 309         .addr   = 0,
 310         .pixfmt = IPU_PIX_FMT_RGB24,
 311         .detect = detect_hdmi,
 312         .enable = do_enable_hdmi,
 313         .mode   = {
 314                 .name           = "HDMI",
 315                 .refresh        = 60,
 316                 .xres           = 1024,
 317                 .yres           = 768,
 318                 .pixclock       = 15385,
 319                 .left_margin    = 220,
 320                 .right_margin   = 40,
 321                 .upper_margin   = 21,
 322                 .lower_margin   = 7,
 323                 .hsync_len      = 60,
 324                 .vsync_len      = 10,
 325                 .sync           = FB_SYNC_EXT,
 326                 .vmode          = FB_VMODE_NONINTERLACED
 327 } }, {
 328         .bus    = 1,
 329         .addr   = 0x10,
 330         .pixfmt = IPU_PIX_FMT_RGB666,
 331         .detect = detect_i2c,
 332         .enable = enable_fwadapt_7wvga,
 333         .mode   = {
 334                 .name           = "FWBADAPT-LCD-F07A-0102",
 335                 .refresh        = 60,
 336                 .xres           = 800,
 337                 .yres           = 480,
 338                 .pixclock       = 33260,
 339                 .left_margin    = 128,
 340                 .right_margin   = 128,
 341                 .upper_margin   = 22,
 342                 .lower_margin   = 22,
 343                 .hsync_len      = 1,
 344                 .vsync_len      = 1,
 345                 .sync           = 0,
 346                 .vmode          = FB_VMODE_NONINTERLACED
 347 } } };
 348 size_t display_count = ARRAY_SIZE(displays);
 349
 350 static void setup_display(void)
 351 {
 352         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 353         int reg;
 354
 355         enable_ipu_clock();
 356         imx_setup_hdmi();
 357
 358         reg = readl(&mxc_ccm->chsccdr);
 359         reg |= (CHSCCDR_CLK_SEL_LDB_DI0
 360                 << MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 361         writel(reg, &mxc_ccm->chsccdr);
 362
 363         /* Disable LCD backlight */
 364         SETUP_IOMUX_PAD(PAD_DI0_PIN4__GPIO4_IO20);
 365         gpio_direction_input(IMX_GPIO_NR(4, 20));
 366 }
 367 #endif /* CONFIG_VIDEO_IPUV3 */
 368
 369 int board_eth_init(bd_t *bis)
 370 {
 371         setup_iomux_enet();
 372
 373         return cpu_eth_init(bis);
 374 }
 375
 376 int board_early_init_f(void)
 377 {
 378         setup_iomux_uart();
 379 #if defined(CONFIG_VIDEO_IPUV3)
 380         setup_display();
 381 #endif
 382 #ifdef CONFIG_CMD_SATA
 383         /* Only mx6q wandboard has SATA */
 384         if (is_cpu_type(MXC_CPU_MX6Q))
 385                 setup_sata();
 386 #endif
 387
 388         return 0;
 389 }
 390
 391 /*
 392  * Do not overwrite the console
 393  * Use always serial for U-Boot console
 394  */
 395 int overwrite_console(void)
 396 {
 397         return 1;
 398 }
 399
 400 #ifdef CONFIG_CMD_BMODE
 401 static const struct boot_mode board_boot_modes[] = {
 402         /* 4 bit bus width */
 403         {"mmc0",          MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 404         {"mmc1",          MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)},
 405         {NULL,   0},
 406 };
 407 #endif
 408
 409 static bool is_revc1(void)
 410 {
 411         SETUP_IOMUX_PADS(rev_detection_pad);
 412         gpio_direction_input(REV_DETECTION);
 413
 414         if (gpio_get_value(REV_DETECTION))
 415                 return true;
 416         else
 417                 return false;
 418 }
 419
 420 int board_late_init(void)
 421 {
 422 #ifdef CONFIG_CMD_BMODE
 423         add_board_boot_modes(board_boot_modes);
 424 #endif
 425
 426 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 427         if (is_mx6dq())
 428                 setenv("board_rev", "MX6Q");
 429         else
 430                 setenv("board_rev", "MX6DL");
 431
 432         if (is_revc1())
 433                 setenv("board_name", "C1");
 434         else
 435                 setenv("board_name", "B1");
 436 #endif
 437         return 0;
 438 }
 439
 440 int board_init(void)
 441 {
 442         /* address of boot parameters */
 443         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 444
 445 #if defined(CONFIG_VIDEO_IPUV3)
 446         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c2_pad_info);
 447         if (is_mx6dq())
 448                 setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6q_i2c2_pad_info);
 449         else
 450                 setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &mx6dl_i2c2_pad_info);
 451 #endif
 452
 453         return 0;
 454 }
 455
 456 int checkboard(void)
 457 {
 458         if (is_revc1())
 459                 puts("Board: Wandboard rev C1\n");
 460         else
 461                 puts("Board: Wandboard rev B1\n");
 462
 463         return 0;
 464 }