board/boundary/nitrogen6x/nitrogen6x.c

   1 /*
   2  * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
   3  * Copyright (C) 2013, Boundary Devices <info@boundarydevices.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/imx-regs.h>
  12 #include <asm/arch/iomux.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <malloc.h>
  15 #include <asm/arch/mx6-pins.h>
  16 #include <asm/errno.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/sata.h>
  21 #include <asm/imx-common/boot_mode.h>
  22 #include <asm/imx-common/video.h>
  23 #include <mmc.h>
  24 #include <fsl_esdhc.h>
  25 #include <micrel.h>
  26 #include <miiphy.h>
  27 #include <netdev.h>
  28 #include <asm/arch/crm_regs.h>
  29 #include <asm/arch/mxc_hdmi.h>
  30 #include <i2c.h>
  31
  32 DECLARE_GLOBAL_DATA_PTR;
  33 #define GP_USB_OTG_PWR  IMX_GPIO_NR(3, 22)
  34
  35 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  36         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  37         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  38
  39 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |                    \
  40         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  41         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  42
  43 #define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  44         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  45
  46 #define SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED |         \
  47         PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)
  48
  49 #define BUTTON_PAD_CTRL (PAD_CTL_PUS_100K_UP |                  \
  50         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  51
  52 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP |                  \
  53         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  54         PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  55
  56 #define WEAK_PULLUP     (PAD_CTL_PUS_100K_UP |                  \
  57         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  58         PAD_CTL_SRE_SLOW)
  59
  60 #define WEAK_PULLDOWN   (PAD_CTL_PUS_100K_DOWN |                \
  61         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  62         PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
  63
  64 #define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
  65
  66 int dram_init(void)
  67 {
  68         gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);
  69
  70         return 0;
  71 }
  72
  73 iomux_v3_cfg_t const uart1_pads[] = {
  74         MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  75         MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  76 };
  77
  78 iomux_v3_cfg_t const uart2_pads[] = {
  79         MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  80         MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  81 };
  82
  83 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
  84
  85 /* I2C1, SGTL5000 */
  86 struct i2c_pads_info i2c_pad_info0 = {
  87         .scl = {
  88                 .i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
  89                 .gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
  90                 .gp = IMX_GPIO_NR(3, 21)
  91         },
  92         .sda = {
  93                 .i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC,
  94                 .gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC,
  95                 .gp = IMX_GPIO_NR(3, 28)
  96         }
  97 };
  98
  99 /* I2C2 Camera, MIPI */
 100 struct i2c_pads_info i2c_pad_info1 = {
 101         .scl = {
 102                 .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
 103                 .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
 104                 .gp = IMX_GPIO_NR(4, 12)
 105         },
 106         .sda = {
 107                 .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
 108                 .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
 109                 .gp = IMX_GPIO_NR(4, 13)
 110         }
 111 };
 112
 113 /* I2C3, J15 - RGB connector */
 114 struct i2c_pads_info i2c_pad_info2 = {
 115         .scl = {
 116                 .i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
 117                 .gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
 118                 .gp = IMX_GPIO_NR(1, 5)
 119         },
 120         .sda = {
 121                 .i2c_mode = MX6_PAD_GPIO_16__I2C3_SDA | PC,
 122                 .gpio_mode = MX6_PAD_GPIO_16__GPIO7_IO11 | PC,
 123                 .gp = IMX_GPIO_NR(7, 11)
 124         }
 125 };
 126
 127 iomux_v3_cfg_t const usdhc3_pads[] = {
 128         MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 129         MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 130         MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 131         MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 132         MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 133         MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 134         MX6_PAD_SD3_DAT5__GPIO7_IO00    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 135 };
 136
 137 iomux_v3_cfg_t const usdhc4_pads[] = {
 138         MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 139         MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 140         MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 141         MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 142         MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 143         MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 144         MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 145 };
 146
 147 iomux_v3_cfg_t const enet_pads1[] = {
 148         MX6_PAD_ENET_MDIO__ENET_MDIO            | MUX_PAD_CTRL(ENET_PAD_CTRL),
 149         MX6_PAD_ENET_MDC__ENET_MDC              | MUX_PAD_CTRL(ENET_PAD_CTRL),
 150         MX6_PAD_RGMII_TXC__RGMII_TXC    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 151         MX6_PAD_RGMII_TD0__RGMII_TD0    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 152         MX6_PAD_RGMII_TD1__RGMII_TD1    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 153         MX6_PAD_RGMII_TD2__RGMII_TD2    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 154         MX6_PAD_RGMII_TD3__RGMII_TD3    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 155         MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 156         MX6_PAD_ENET_REF_CLK__ENET_TX_CLK       | MUX_PAD_CTRL(ENET_PAD_CTRL),
 157         /* pin 35 - 1 (PHY_AD2) on reset */
 158         MX6_PAD_RGMII_RXC__GPIO6_IO30           | MUX_PAD_CTRL(NO_PAD_CTRL),
 159         /* pin 32 - 1 - (MODE0) all */
 160         MX6_PAD_RGMII_RD0__GPIO6_IO25           | MUX_PAD_CTRL(NO_PAD_CTRL),
 161         /* pin 31 - 1 - (MODE1) all */
 162         MX6_PAD_RGMII_RD1__GPIO6_IO27           | MUX_PAD_CTRL(NO_PAD_CTRL),
 163         /* pin 28 - 1 - (MODE2) all */
 164         MX6_PAD_RGMII_RD2__GPIO6_IO28           | MUX_PAD_CTRL(NO_PAD_CTRL),
 165         /* pin 27 - 1 - (MODE3) all */
 166         MX6_PAD_RGMII_RD3__GPIO6_IO29           | MUX_PAD_CTRL(NO_PAD_CTRL),
 167         /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
 168         MX6_PAD_RGMII_RX_CTL__GPIO6_IO24        | MUX_PAD_CTRL(NO_PAD_CTRL),
 169         /* pin 42 PHY nRST */
 170         MX6_PAD_EIM_D23__GPIO3_IO23             | MUX_PAD_CTRL(NO_PAD_CTRL),
 171         MX6_PAD_ENET_RXD0__GPIO1_IO27           | MUX_PAD_CTRL(NO_PAD_CTRL),
 172 };
 173
 174 iomux_v3_cfg_t const enet_pads2[] = {
 175         MX6_PAD_RGMII_RXC__RGMII_RXC    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 176         MX6_PAD_RGMII_RD0__RGMII_RD0    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 177         MX6_PAD_RGMII_RD1__RGMII_RD1    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 178         MX6_PAD_RGMII_RD2__RGMII_RD2    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 179         MX6_PAD_RGMII_RD3__RGMII_RD3    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 180         MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 181 };
 182
 183 static iomux_v3_cfg_t const misc_pads[] = {
 184         MX6_PAD_GPIO_1__USB_OTG_ID              | MUX_PAD_CTRL(WEAK_PULLUP),
 185         MX6_PAD_KEY_COL4__USB_OTG_OC            | MUX_PAD_CTRL(WEAK_PULLUP),
 186         MX6_PAD_EIM_D30__USB_H1_OC              | MUX_PAD_CTRL(WEAK_PULLUP),
 187         /* OTG Power enable */
 188         MX6_PAD_EIM_D22__GPIO3_IO22             | MUX_PAD_CTRL(OUTPUT_40OHM),
 189 };
 190
 191 /* wl1271 pads on nitrogen6x */
 192 iomux_v3_cfg_t const wl12xx_pads[] = {
 193         (MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
 194                 | MUX_PAD_CTRL(WEAK_PULLDOWN),
 195         (MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
 196                 | MUX_PAD_CTRL(OUTPUT_40OHM),
 197         (MX6_PAD_NANDF_CS3__GPIO6_IO16 & ~MUX_PAD_CTRL_MASK)
 198                 | MUX_PAD_CTRL(OUTPUT_40OHM),
 199 };
 200 #define WL12XX_WL_IRQ_GP        IMX_GPIO_NR(6, 14)
 201 #define WL12XX_WL_ENABLE_GP     IMX_GPIO_NR(6, 15)
 202 #define WL12XX_BT_ENABLE_GP     IMX_GPIO_NR(6, 16)
 203
 204 /* Button assignments for J14 */
 205 static iomux_v3_cfg_t const button_pads[] = {
 206         /* Menu */
 207         MX6_PAD_NANDF_D1__GPIO2_IO01    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 208         /* Back */
 209         MX6_PAD_NANDF_D2__GPIO2_IO02    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 210         /* Labelled Search (mapped to Power under Android) */
 211         MX6_PAD_NANDF_D3__GPIO2_IO03    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 212         /* Home */
 213         MX6_PAD_NANDF_D4__GPIO2_IO04    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 214         /* Volume Down */
 215         MX6_PAD_GPIO_19__GPIO4_IO05     | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 216         /* Volume Up */
 217         MX6_PAD_GPIO_18__GPIO7_IO13     | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 218 };
 219
 220 static void setup_iomux_enet(void)
 221 {
 222         gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
 223         gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
 224         gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
 225         gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
 226         gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
 227         gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
 228         gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
 229         imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
 230         gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
 231
 232         /* Need delay 10ms according to KSZ9021 spec */
 233         udelay(1000 * 10);
 234         gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
 235         gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
 236
 237         imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
 238 }
 239
 240 iomux_v3_cfg_t const usb_pads[] = {
 241         MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
 242 };
 243
 244 static void setup_iomux_uart(void)
 245 {
 246         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 247         imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
 248 }
 249
 250 #ifdef CONFIG_USB_EHCI_MX6
 251 int board_ehci_hcd_init(int port)
 252 {
 253         imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
 254
 255         /* Reset USB hub */
 256         gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
 257         mdelay(2);
 258         gpio_set_value(IMX_GPIO_NR(7, 12), 1);
 259
 260         return 0;
 261 }
 262
 263 int board_ehci_power(int port, int on)
 264 {
 265         if (port)
 266                 return 0;
 267         gpio_set_value(GP_USB_OTG_PWR, on);
 268         return 0;
 269 }
 270
 271 #endif
 272
 273 #ifdef CONFIG_FSL_ESDHC
 274 struct fsl_esdhc_cfg usdhc_cfg[2] = {
 275         {USDHC3_BASE_ADDR},
 276         {USDHC4_BASE_ADDR},
 277 };
 278
 279 int board_mmc_getcd(struct mmc *mmc)
 280 {
 281         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 282         int ret;
 283
 284         if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
 285                 gpio_direction_input(IMX_GPIO_NR(7, 0));
 286                 ret = !gpio_get_value(IMX_GPIO_NR(7, 0));
 287         } else {
 288                 gpio_direction_input(IMX_GPIO_NR(2, 6));
 289                 ret = !gpio_get_value(IMX_GPIO_NR(2, 6));
 290         }
 291
 292         return ret;
 293 }
 294
 295 int board_mmc_init(bd_t *bis)
 296 {
 297         s32 status = 0;
 298         u32 index = 0;
 299
 300         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 301         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 302
 303         usdhc_cfg[0].max_bus_width = 4;
 304         usdhc_cfg[1].max_bus_width = 4;
 305
 306         for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
 307                 switch (index) {
 308                 case 0:
 309                         imx_iomux_v3_setup_multiple_pads(
 310                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 311                         break;
 312                 case 1:
 313                        imx_iomux_v3_setup_multiple_pads(
 314                                usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
 315                        break;
 316                 default:
 317                        printf("Warning: you configured more USDHC controllers"
 318                                "(%d) then supported by the board (%d)\n",
 319                                index + 1, CONFIG_SYS_FSL_USDHC_NUM);
 320                        return status;
 321                 }
 322
 323                 status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 324         }
 325
 326         return status;
 327 }
 328 #endif
 329
 330 #ifdef CONFIG_MXC_SPI
 331 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 332 {
 333         return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(3, 19)) : -1;
 334 }
 335
 336 iomux_v3_cfg_t const ecspi1_pads[] = {
 337         /* SS1 */
 338         MX6_PAD_EIM_D19__GPIO3_IO19  | MUX_PAD_CTRL(NO_PAD_CTRL),
 339         MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
 340         MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
 341         MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 342 };
 343
 344 void setup_spi(void)
 345 {
 346         imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
 347                                          ARRAY_SIZE(ecspi1_pads));
 348 }
 349 #endif
 350
 351 int board_phy_config(struct phy_device *phydev)
 352 {
 353         /* min rx data delay */
 354         ksz9021_phy_extended_write(phydev,
 355                         MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
 356         /* min tx data delay */
 357         ksz9021_phy_extended_write(phydev,
 358                         MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
 359         /* max rx/tx clock delay, min rx/tx control */
 360         ksz9021_phy_extended_write(phydev,
 361                         MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
 362         if (phydev->drv->config)
 363                 phydev->drv->config(phydev);
 364
 365         return 0;
 366 }
 367
 368 int board_eth_init(bd_t *bis)
 369 {
 370         uint32_t base = IMX_FEC_BASE;
 371         struct mii_dev *bus = NULL;
 372         struct phy_device *phydev = NULL;
 373         int ret;
 374
 375         setup_iomux_enet();
 376
 377 #ifdef CONFIG_FEC_MXC
 378         bus = fec_get_miibus(base, -1);
 379         if (!bus)
 380                 return 0;
 381         /* scan phy 4,5,6,7 */
 382         phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
 383         if (!phydev) {
 384                 free(bus);
 385                 return 0;
 386         }
 387         printf("using phy at %d\n", phydev->addr);
 388         ret  = fec_probe(bis, -1, base, bus, phydev);
 389         if (ret) {
 390                 printf("FEC MXC: %s:failed\n", __func__);
 391                 free(phydev);
 392                 free(bus);
 393         }
 394 #endif
 395
 396 #ifdef CONFIG_CI_UDC
 397         /* For otg ethernet*/
 398         usb_eth_initialize(bis);
 399 #endif
 400         return 0;
 401 }
 402
 403 static void setup_buttons(void)
 404 {
 405         imx_iomux_v3_setup_multiple_pads(button_pads,
 406                                          ARRAY_SIZE(button_pads));
 407 }
 408
 409 #if defined(CONFIG_VIDEO_IPUV3)
 410
 411 static iomux_v3_cfg_t const backlight_pads[] = {
 412         /* Backlight on RGB connector: J15 */
 413         MX6_PAD_SD1_DAT3__GPIO1_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
 414 #define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
 415
 416         /* Backlight on LVDS connector: J6 */
 417         MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
 418 #define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
 419 };
 420
 421 static iomux_v3_cfg_t const rgb_pads[] = {
 422         MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
 423         MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
 424         MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
 425         MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
 426         MX6_PAD_DI0_PIN4__GPIO4_IO20,
 427         MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
 428         MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
 429         MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
 430         MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
 431         MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
 432         MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
 433         MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
 434         MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
 435         MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
 436         MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
 437         MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
 438         MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
 439         MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
 440         MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
 441         MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
 442         MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
 443         MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
 444         MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
 445         MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
 446         MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
 447         MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
 448         MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
 449         MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
 450         MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
 451 };
 452
 453 static void do_enable_hdmi(struct display_info_t const *dev)
 454 {
 455         imx_enable_hdmi_phy();
 456 }
 457
 458 static int detect_i2c(struct display_info_t const *dev)
 459 {
 460         return ((0 == i2c_set_bus_num(dev->bus))
 461                 &&
 462                 (0 == i2c_probe(dev->addr)));
 463 }
 464
 465 static void enable_lvds(struct display_info_t const *dev)
 466 {
 467         struct iomuxc *iomux = (struct iomuxc *)
 468                                 IOMUXC_BASE_ADDR;
 469         u32 reg = readl(&iomux->gpr[2]);
 470         reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
 471         writel(reg, &iomux->gpr[2]);
 472         gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
 473 }
 474
 475 static void enable_rgb(struct display_info_t const *dev)
 476 {
 477         imx_iomux_v3_setup_multiple_pads(
 478                 rgb_pads,
 479                  ARRAY_SIZE(rgb_pads));
 480         gpio_direction_output(RGB_BACKLIGHT_GP, 1);
 481 }
 482
 483 struct display_info_t const displays[] = {{
 484         .bus    = -1,
 485         .addr   = 0,
 486         .pixfmt = IPU_PIX_FMT_RGB24,
 487         .detect = detect_hdmi,
 488         .enable = do_enable_hdmi,
 489         .mode   = {
 490                 .name           = "HDMI",
 491                 .refresh        = 60,
 492                 .xres           = 1024,
 493                 .yres           = 768,
 494                 .pixclock       = 15385,
 495                 .left_margin    = 220,
 496                 .right_margin   = 40,
 497                 .upper_margin   = 21,
 498                 .lower_margin   = 7,
 499                 .hsync_len      = 60,
 500                 .vsync_len      = 10,
 501                 .sync           = FB_SYNC_EXT,
 502                 .vmode          = FB_VMODE_NONINTERLACED
 503 } }, {
 504         .bus    = 2,
 505         .addr   = 0x4,
 506         .pixfmt = IPU_PIX_FMT_LVDS666,
 507         .detect = detect_i2c,
 508         .enable = enable_lvds,
 509         .mode   = {
 510                 .name           = "Hannstar-XGA",
 511                 .refresh        = 60,
 512                 .xres           = 1024,
 513                 .yres           = 768,
 514                 .pixclock       = 15385,
 515                 .left_margin    = 220,
 516                 .right_margin   = 40,
 517                 .upper_margin   = 21,
 518                 .lower_margin   = 7,
 519                 .hsync_len      = 60,
 520                 .vsync_len      = 10,
 521                 .sync           = FB_SYNC_EXT,
 522                 .vmode          = FB_VMODE_NONINTERLACED
 523 } }, {
 524         .bus    = 2,
 525         .addr   = 0x38,
 526         .pixfmt = IPU_PIX_FMT_LVDS666,
 527         .detect = detect_i2c,
 528         .enable = enable_lvds,
 529         .mode   = {
 530                 .name           = "wsvga-lvds",
 531                 .refresh        = 60,
 532                 .xres           = 1024,
 533                 .yres           = 600,
 534                 .pixclock       = 15385,
 535                 .left_margin    = 220,
 536                 .right_margin   = 40,
 537                 .upper_margin   = 21,
 538                 .lower_margin   = 7,
 539                 .hsync_len      = 60,
 540                 .vsync_len      = 10,
 541                 .sync           = FB_SYNC_EXT,
 542                 .vmode          = FB_VMODE_NONINTERLACED
 543 } }, {
 544         .bus    = 2,
 545         .addr   = 0x48,
 546         .pixfmt = IPU_PIX_FMT_RGB666,
 547         .detect = detect_i2c,
 548         .enable = enable_rgb,
 549         .mode   = {
 550                 .name           = "wvga-rgb",
 551                 .refresh        = 57,
 552                 .xres           = 800,
 553                 .yres           = 480,
 554                 .pixclock       = 37037,
 555                 .left_margin    = 40,
 556                 .right_margin   = 60,
 557                 .upper_margin   = 10,
 558                 .lower_margin   = 10,
 559                 .hsync_len      = 20,
 560                 .vsync_len      = 10,
 561                 .sync           = 0,
 562                 .vmode          = FB_VMODE_NONINTERLACED
 563 } } };
 564 size_t display_count = ARRAY_SIZE(displays);
 565
 566 static void setup_display(void)
 567 {
 568         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 569         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 570         int reg;
 571
 572         enable_ipu_clock();
 573         imx_setup_hdmi();
 574         /* Turn on LDB0,IPU,IPU DI0 clocks */
 575         reg = __raw_readl(&mxc_ccm->CCGR3);
 576         reg |=  MXC_CCM_CCGR3_LDB_DI0_MASK;
 577         writel(reg, &mxc_ccm->CCGR3);
 578
 579         /* set LDB0, LDB1 clk select to 011/011 */
 580         reg = readl(&mxc_ccm->cs2cdr);
 581         reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
 582                  |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
 583         reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
 584               |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
 585         writel(reg, &mxc_ccm->cs2cdr);
 586
 587         reg = readl(&mxc_ccm->cscmr2);
 588         reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
 589         writel(reg, &mxc_ccm->cscmr2);
 590
 591         reg = readl(&mxc_ccm->chsccdr);
 592         reg |= (CHSCCDR_CLK_SEL_LDB_DI0
 593                 <<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 594         writel(reg, &mxc_ccm->chsccdr);
 595
 596         reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
 597              |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
 598              |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
 599              |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
 600              |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
 601              |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
 602              |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
 603              |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
 604              |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
 605         writel(reg, &iomux->gpr[2]);
 606
 607         reg = readl(&iomux->gpr[3]);
 608         reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
 609                         |IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
 610             | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
 611                <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
 612         writel(reg, &iomux->gpr[3]);
 613
 614         /* backlights off until needed */
 615         imx_iomux_v3_setup_multiple_pads(backlight_pads,
 616                                          ARRAY_SIZE(backlight_pads));
 617         gpio_direction_input(LVDS_BACKLIGHT_GP);
 618         gpio_direction_input(RGB_BACKLIGHT_GP);
 619 }
 620 #endif
 621
 622 int board_early_init_f(void)
 623 {
 624         setup_iomux_uart();
 625
 626         /* Disable wl1271 For Nitrogen6w */
 627         gpio_direction_input(WL12XX_WL_IRQ_GP);
 628         gpio_direction_output(WL12XX_WL_ENABLE_GP, 0);
 629         gpio_direction_output(WL12XX_BT_ENABLE_GP, 0);
 630         gpio_direction_output(GP_USB_OTG_PWR, 0); /* OTG power off */
 631
 632         imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
 633         setup_buttons();
 634
 635 #if defined(CONFIG_VIDEO_IPUV3)
 636         setup_display();
 637 #endif
 638         return 0;
 639 }
 640
 641 /*
 642  * Do not overwrite the console
 643  * Use always serial for U-Boot console
 644  */
 645 int overwrite_console(void)
 646 {
 647         return 1;
 648 }
 649
 650 int board_init(void)
 651 {
 652         struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 653
 654         clrsetbits_le32(&iomuxc_regs->gpr[1],
 655                         IOMUXC_GPR1_OTG_ID_MASK,
 656                         IOMUXC_GPR1_OTG_ID_GPIO1);
 657
 658         imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
 659
 660         /* address of boot parameters */
 661         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 662
 663 #ifdef CONFIG_MXC_SPI
 664         setup_spi();
 665 #endif
 666         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
 667         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 668         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 669
 670 #ifdef CONFIG_CMD_SATA
 671         setup_sata();
 672 #endif
 673
 674         return 0;
 675 }
 676
 677 int checkboard(void)
 678 {
 679         if (gpio_get_value(WL12XX_WL_IRQ_GP))
 680                 puts("Board: Nitrogen6X\n");
 681         else
 682                 puts("Board: SABRE Lite\n");
 683
 684         return 0;
 685 }
 686
 687 struct button_key {
 688         char const      *name;
 689         unsigned        gpnum;
 690         char            ident;
 691 };
 692
 693 static struct button_key const buttons[] = {
 694         {"back",        IMX_GPIO_NR(2, 2),      'B'},
 695         {"home",        IMX_GPIO_NR(2, 4),      'H'},
 696         {"menu",        IMX_GPIO_NR(2, 1),      'M'},
 697         {"search",      IMX_GPIO_NR(2, 3),      'S'},
 698         {"volup",       IMX_GPIO_NR(7, 13),     'V'},
 699         {"voldown",     IMX_GPIO_NR(4, 5),      'v'},
 700 };
 701
 702 /*
 703  * generate a null-terminated string containing the buttons pressed
 704  * returns number of keys pressed
 705  */
 706 static int read_keys(char *buf)
 707 {
 708         int i, numpressed = 0;
 709         for (i = 0; i < ARRAY_SIZE(buttons); i++) {
 710                 if (!gpio_get_value(buttons[i].gpnum))
 711                         buf[numpressed++] = buttons[i].ident;
 712         }
 713         buf[numpressed] = '\0';
 714         return numpressed;
 715 }
 716
 717 static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 718 {
 719         char envvalue[ARRAY_SIZE(buttons)+1];
 720         int numpressed = read_keys(envvalue);
 721         setenv("keybd", envvalue);
 722         return numpressed == 0;
 723 }
 724
 725 U_BOOT_CMD(
 726         kbd, 1, 1, do_kbd,
 727         "Tests for keypresses, sets 'keybd' environment variable",
 728         "Returns 0 (true) to shell if key is pressed."
 729 );
 730
 731 #ifdef CONFIG_PREBOOT
 732 static char const kbd_magic_prefix[] = "key_magic";
 733 static char const kbd_command_prefix[] = "key_cmd";
 734
 735 static void preboot_keys(void)
 736 {
 737         int numpressed;
 738         char keypress[ARRAY_SIZE(buttons)+1];
 739         numpressed = read_keys(keypress);
 740         if (numpressed) {
 741                 char *kbd_magic_keys = getenv("magic_keys");
 742                 char *suffix;
 743                 /*
 744                  * loop over all magic keys
 745                  */
 746                 for (suffix = kbd_magic_keys; *suffix; ++suffix) {
 747                         char *keys;
 748                         char magic[sizeof(kbd_magic_prefix) + 1];
 749                         sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
 750                         keys = getenv(magic);
 751                         if (keys) {
 752                                 if (!strcmp(keys, keypress))
 753                                         break;
 754                         }
 755                 }
 756                 if (*suffix) {
 757                         char cmd_name[sizeof(kbd_command_prefix) + 1];
 758                         char *cmd;
 759                         sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
 760                         cmd = getenv(cmd_name);
 761                         if (cmd) {
 762                                 setenv("preboot", cmd);
 763                                 return;
 764                         }
 765                 }
 766         }
 767 }
 768 #endif
 769
 770 #ifdef CONFIG_CMD_BMODE
 771 static const struct boot_mode board_boot_modes[] = {
 772         /* 4 bit bus width */
 773         {"mmc0",        MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 774         {"mmc1",        MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
 775         {NULL,          0},
 776 };
 777 #endif
 778
 779 int misc_init_r(void)
 780 {
 781 #ifdef CONFIG_PREBOOT
 782         preboot_keys();
 783 #endif
 784
 785 #ifdef CONFIG_CMD_BMODE
 786         add_board_boot_modes(board_boot_modes);
 787 #endif
 788         return 0;
 789 }