board/boundary/nitrogen6x/nitrogen6x.c

   1 /*
   2  * Copyright (C) 2010-2013 Freescale Semiconductor, Inc.
   3  * Copyright (C) 2013, Boundary Devices <[email protected]>
   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 <mmc.h>
  23 #include <fsl_esdhc.h>
  24 #include <micrel.h>
  25 #include <miiphy.h>
  26 #include <netdev.h>
  27 #include <linux/fb.h>
  28 #include <ipu_pixfmt.h>
  29 #include <asm/arch/crm_regs.h>
  30 #include <asm/arch/mxc_hdmi.h>
  31 #include <i2c.h>
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34 #define GP_USB_OTG_PWR  IMX_GPIO_NR(3, 22)
  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 SPI_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_SPEED_MED |         \
  48         PAD_CTL_DSE_40ohm     | PAD_CTL_SRE_FAST)
  49
  50 #define BUTTON_PAD_CTRL (PAD_CTL_PUS_100K_UP |                  \
  51         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
  52
  53 #define I2C_PAD_CTRL    (PAD_CTL_PUS_100K_UP |                  \
  54         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  55         PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  56
  57 #define WEAK_PULLUP     (PAD_CTL_PUS_100K_UP |                  \
  58         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS |   \
  59         PAD_CTL_SRE_SLOW)
  60
  61 #define WEAK_PULLDOWN   (PAD_CTL_PUS_100K_DOWN |                \
  62         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  63         PAD_CTL_HYS | PAD_CTL_SRE_SLOW)
  64
  65 #define OUTPUT_40OHM (PAD_CTL_SPEED_MED|PAD_CTL_DSE_40ohm)
  66
  67 int dram_init(void)
  68 {
  69         gd->ram_size = ((ulong)CONFIG_DDR_MB * 1024 * 1024);
  70
  71         return 0;
  72 }
  73
  74 iomux_v3_cfg_t const uart1_pads[] = {
  75         MX6_PAD_SD3_DAT6__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  76         MX6_PAD_SD3_DAT7__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  77 };
  78
  79 iomux_v3_cfg_t const uart2_pads[] = {
  80         MX6_PAD_EIM_D26__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  81         MX6_PAD_EIM_D27__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
  82 };
  83
  84 #define PC MUX_PAD_CTRL(I2C_PAD_CTRL)
  85
  86 /* I2C1, SGTL5000 */
  87 struct i2c_pads_info i2c_pad_info0 = {
  88         .scl = {
  89                 .i2c_mode = MX6_PAD_EIM_D21__I2C1_SCL | PC,
  90                 .gpio_mode = MX6_PAD_EIM_D21__GPIO3_IO21 | PC,
  91                 .gp = IMX_GPIO_NR(3, 21)
  92         },
  93         .sda = {
  94                 .i2c_mode = MX6_PAD_EIM_D28__I2C1_SDA | PC,
  95                 .gpio_mode = MX6_PAD_EIM_D28__GPIO3_IO28 | PC,
  96                 .gp = IMX_GPIO_NR(3, 28)
  97         }
  98 };
  99
 100 /* I2C2 Camera, MIPI */
 101 struct i2c_pads_info i2c_pad_info1 = {
 102         .scl = {
 103                 .i2c_mode = MX6_PAD_KEY_COL3__I2C2_SCL | PC,
 104                 .gpio_mode = MX6_PAD_KEY_COL3__GPIO4_IO12 | PC,
 105                 .gp = IMX_GPIO_NR(4, 12)
 106         },
 107         .sda = {
 108                 .i2c_mode = MX6_PAD_KEY_ROW3__I2C2_SDA | PC,
 109                 .gpio_mode = MX6_PAD_KEY_ROW3__GPIO4_IO13 | PC,
 110                 .gp = IMX_GPIO_NR(4, 13)
 111         }
 112 };
 113
 114 /* I2C3, J15 - RGB connector */
 115 struct i2c_pads_info i2c_pad_info2 = {
 116         .scl = {
 117                 .i2c_mode = MX6_PAD_GPIO_5__I2C3_SCL | PC,
 118                 .gpio_mode = MX6_PAD_GPIO_5__GPIO1_IO05 | PC,
 119                 .gp = IMX_GPIO_NR(1, 5)
 120         },
 121         .sda = {
 122                 .i2c_mode = MX6_PAD_GPIO_16__I2C3_SDA | PC,
 123                 .gpio_mode = MX6_PAD_GPIO_16__GPIO7_IO11 | PC,
 124                 .gp = IMX_GPIO_NR(7, 11)
 125         }
 126 };
 127
 128 iomux_v3_cfg_t const usdhc3_pads[] = {
 129         MX6_PAD_SD3_CLK__SD3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 130         MX6_PAD_SD3_CMD__SD3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 131         MX6_PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 132         MX6_PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 133         MX6_PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 134         MX6_PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 135         MX6_PAD_SD3_DAT5__GPIO7_IO00    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 136 };
 137
 138 iomux_v3_cfg_t const usdhc4_pads[] = {
 139         MX6_PAD_SD4_CLK__SD4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 140         MX6_PAD_SD4_CMD__SD4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 141         MX6_PAD_SD4_DAT0__SD4_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 142         MX6_PAD_SD4_DAT1__SD4_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 143         MX6_PAD_SD4_DAT2__SD4_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 144         MX6_PAD_SD4_DAT3__SD4_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 145         MX6_PAD_NANDF_D6__GPIO2_IO06    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
 146 };
 147
 148 iomux_v3_cfg_t const enet_pads1[] = {
 149         MX6_PAD_ENET_MDIO__ENET_MDIO            | MUX_PAD_CTRL(ENET_PAD_CTRL),
 150         MX6_PAD_ENET_MDC__ENET_MDC              | MUX_PAD_CTRL(ENET_PAD_CTRL),
 151         MX6_PAD_RGMII_TXC__RGMII_TXC    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 152         MX6_PAD_RGMII_TD0__RGMII_TD0    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 153         MX6_PAD_RGMII_TD1__RGMII_TD1    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 154         MX6_PAD_RGMII_TD2__RGMII_TD2    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 155         MX6_PAD_RGMII_TD3__RGMII_TD3    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 156         MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 157         MX6_PAD_ENET_REF_CLK__ENET_TX_CLK       | MUX_PAD_CTRL(ENET_PAD_CTRL),
 158         /* pin 35 - 1 (PHY_AD2) on reset */
 159         MX6_PAD_RGMII_RXC__GPIO6_IO30           | MUX_PAD_CTRL(NO_PAD_CTRL),
 160         /* pin 32 - 1 - (MODE0) all */
 161         MX6_PAD_RGMII_RD0__GPIO6_IO25           | MUX_PAD_CTRL(NO_PAD_CTRL),
 162         /* pin 31 - 1 - (MODE1) all */
 163         MX6_PAD_RGMII_RD1__GPIO6_IO27           | MUX_PAD_CTRL(NO_PAD_CTRL),
 164         /* pin 28 - 1 - (MODE2) all */
 165         MX6_PAD_RGMII_RD2__GPIO6_IO28           | MUX_PAD_CTRL(NO_PAD_CTRL),
 166         /* pin 27 - 1 - (MODE3) all */
 167         MX6_PAD_RGMII_RD3__GPIO6_IO29           | MUX_PAD_CTRL(NO_PAD_CTRL),
 168         /* pin 33 - 1 - (CLK125_EN) 125Mhz clockout enabled */
 169         MX6_PAD_RGMII_RX_CTL__GPIO6_IO24        | MUX_PAD_CTRL(NO_PAD_CTRL),
 170         /* pin 42 PHY nRST */
 171         MX6_PAD_EIM_D23__GPIO3_IO23             | MUX_PAD_CTRL(NO_PAD_CTRL),
 172         MX6_PAD_ENET_RXD0__GPIO1_IO27           | MUX_PAD_CTRL(NO_PAD_CTRL),
 173 };
 174
 175 iomux_v3_cfg_t const enet_pads2[] = {
 176         MX6_PAD_RGMII_RXC__RGMII_RXC    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 177         MX6_PAD_RGMII_RD0__RGMII_RD0    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 178         MX6_PAD_RGMII_RD1__RGMII_RD1    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 179         MX6_PAD_RGMII_RD2__RGMII_RD2    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 180         MX6_PAD_RGMII_RD3__RGMII_RD3    | MUX_PAD_CTRL(ENET_PAD_CTRL),
 181         MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL      | MUX_PAD_CTRL(ENET_PAD_CTRL),
 182 };
 183
 184 static iomux_v3_cfg_t const misc_pads[] = {
 185         MX6_PAD_GPIO_1__USB_OTG_ID              | MUX_PAD_CTRL(WEAK_PULLUP),
 186         MX6_PAD_KEY_COL4__USB_OTG_OC            | MUX_PAD_CTRL(WEAK_PULLUP),
 187         MX6_PAD_EIM_D30__USB_H1_OC              | MUX_PAD_CTRL(WEAK_PULLUP),
 188         /* OTG Power enable */
 189         MX6_PAD_EIM_D22__GPIO3_IO22             | MUX_PAD_CTRL(OUTPUT_40OHM),
 190 };
 191
 192 /* wl1271 pads on nitrogen6x */
 193 iomux_v3_cfg_t const wl12xx_pads[] = {
 194         (MX6_PAD_NANDF_CS1__GPIO6_IO14 & ~MUX_PAD_CTRL_MASK)
 195                 | MUX_PAD_CTRL(WEAK_PULLDOWN),
 196         (MX6_PAD_NANDF_CS2__GPIO6_IO15 & ~MUX_PAD_CTRL_MASK)
 197                 | MUX_PAD_CTRL(OUTPUT_40OHM),
 198         (MX6_PAD_NANDF_CS3__GPIO6_IO16 & ~MUX_PAD_CTRL_MASK)
 199                 | MUX_PAD_CTRL(OUTPUT_40OHM),
 200 };
 201 #define WL12XX_WL_IRQ_GP        IMX_GPIO_NR(6, 14)
 202 #define WL12XX_WL_ENABLE_GP     IMX_GPIO_NR(6, 15)
 203 #define WL12XX_BT_ENABLE_GP     IMX_GPIO_NR(6, 16)
 204
 205 /* Button assignments for J14 */
 206 static iomux_v3_cfg_t const button_pads[] = {
 207         /* Menu */
 208         MX6_PAD_NANDF_D1__GPIO2_IO01    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 209         /* Back */
 210         MX6_PAD_NANDF_D2__GPIO2_IO02    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 211         /* Labelled Search (mapped to Power under Android) */
 212         MX6_PAD_NANDF_D3__GPIO2_IO03    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 213         /* Home */
 214         MX6_PAD_NANDF_D4__GPIO2_IO04    | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 215         /* Volume Down */
 216         MX6_PAD_GPIO_19__GPIO4_IO05     | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 217         /* Volume Up */
 218         MX6_PAD_GPIO_18__GPIO7_IO13     | MUX_PAD_CTRL(BUTTON_PAD_CTRL),
 219 };
 220
 221 static void setup_iomux_enet(void)
 222 {
 223         gpio_direction_output(IMX_GPIO_NR(3, 23), 0); /* SABRE Lite PHY rst */
 224         gpio_direction_output(IMX_GPIO_NR(1, 27), 0); /* Nitrogen6X PHY rst */
 225         gpio_direction_output(IMX_GPIO_NR(6, 30), 1);
 226         gpio_direction_output(IMX_GPIO_NR(6, 25), 1);
 227         gpio_direction_output(IMX_GPIO_NR(6, 27), 1);
 228         gpio_direction_output(IMX_GPIO_NR(6, 28), 1);
 229         gpio_direction_output(IMX_GPIO_NR(6, 29), 1);
 230         imx_iomux_v3_setup_multiple_pads(enet_pads1, ARRAY_SIZE(enet_pads1));
 231         gpio_direction_output(IMX_GPIO_NR(6, 24), 1);
 232
 233         /* Need delay 10ms according to KSZ9021 spec */
 234         udelay(1000 * 10);
 235         gpio_set_value(IMX_GPIO_NR(3, 23), 1); /* SABRE Lite PHY reset */
 236         gpio_set_value(IMX_GPIO_NR(1, 27), 1); /* Nitrogen6X PHY reset */
 237
 238         imx_iomux_v3_setup_multiple_pads(enet_pads2, ARRAY_SIZE(enet_pads2));
 239 }
 240
 241 iomux_v3_cfg_t const usb_pads[] = {
 242         MX6_PAD_GPIO_17__GPIO7_IO12 | MUX_PAD_CTRL(NO_PAD_CTRL),
 243 };
 244
 245 static void setup_iomux_uart(void)
 246 {
 247         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 248         imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
 249 }
 250
 251 #ifdef CONFIG_USB_EHCI_MX6
 252 int board_ehci_hcd_init(int port)
 253 {
 254         imx_iomux_v3_setup_multiple_pads(usb_pads, ARRAY_SIZE(usb_pads));
 255
 256         /* Reset USB hub */
 257         gpio_direction_output(IMX_GPIO_NR(7, 12), 0);
 258         mdelay(2);
 259         gpio_set_value(IMX_GPIO_NR(7, 12), 1);
 260
 261         return 0;
 262 }
 263
 264 int board_ehci_power(int port, int on)
 265 {
 266         if (port)
 267                 return 0;
 268         gpio_set_value(GP_USB_OTG_PWR, on);
 269         return 0;
 270 }
 271
 272 #endif
 273
 274 #ifdef CONFIG_FSL_ESDHC
 275 struct fsl_esdhc_cfg usdhc_cfg[2] = {
 276         {USDHC3_BASE_ADDR},
 277         {USDHC4_BASE_ADDR},
 278 };
 279
 280 int board_mmc_getcd(struct mmc *mmc)
 281 {
 282         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 283         int ret;
 284
 285         if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
 286                 gpio_direction_input(IMX_GPIO_NR(7, 0));
 287                 ret = !gpio_get_value(IMX_GPIO_NR(7, 0));
 288         } else {
 289                 gpio_direction_input(IMX_GPIO_NR(2, 6));
 290                 ret = !gpio_get_value(IMX_GPIO_NR(2, 6));
 291         }
 292
 293         return ret;
 294 }
 295
 296 int board_mmc_init(bd_t *bis)
 297 {
 298         s32 status = 0;
 299         u32 index = 0;
 300
 301         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 302         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC4_CLK);
 303
 304         usdhc_cfg[0].max_bus_width = 4;
 305         usdhc_cfg[1].max_bus_width = 4;
 306
 307         for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
 308                 switch (index) {
 309                 case 0:
 310                         imx_iomux_v3_setup_multiple_pads(
 311                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 312                         break;
 313                 case 1:
 314                        imx_iomux_v3_setup_multiple_pads(
 315                                usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
 316                        break;
 317                 default:
 318                        printf("Warning: you configured more USDHC controllers"
 319                                "(%d) then supported by the board (%d)\n",
 320                                index + 1, CONFIG_SYS_FSL_USDHC_NUM);
 321                        return status;
 322                 }
 323
 324                 status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
 325         }
 326
 327         return status;
 328 }
 329 #endif
 330
 331 #ifdef CONFIG_MXC_SPI
 332 iomux_v3_cfg_t const ecspi1_pads[] = {
 333         /* SS1 */
 334         MX6_PAD_EIM_D19__GPIO3_IO19   | MUX_PAD_CTRL(SPI_PAD_CTRL),
 335         MX6_PAD_EIM_D17__ECSPI1_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
 336         MX6_PAD_EIM_D18__ECSPI1_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
 337         MX6_PAD_EIM_D16__ECSPI1_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 338 };
 339
 340 void setup_spi(void)
 341 {
 342         imx_iomux_v3_setup_multiple_pads(ecspi1_pads,
 343                                          ARRAY_SIZE(ecspi1_pads));
 344 }
 345 #endif
 346
 347 int board_phy_config(struct phy_device *phydev)
 348 {
 349         /* min rx data delay */
 350         ksz9021_phy_extended_write(phydev,
 351                         MII_KSZ9021_EXT_RGMII_RX_DATA_SKEW, 0x0);
 352         /* min tx data delay */
 353         ksz9021_phy_extended_write(phydev,
 354                         MII_KSZ9021_EXT_RGMII_TX_DATA_SKEW, 0x0);
 355         /* max rx/tx clock delay, min rx/tx control */
 356         ksz9021_phy_extended_write(phydev,
 357                         MII_KSZ9021_EXT_RGMII_CLOCK_SKEW, 0xf0f0);
 358         if (phydev->drv->config)
 359                 phydev->drv->config(phydev);
 360
 361         return 0;
 362 }
 363
 364 int board_eth_init(bd_t *bis)
 365 {
 366         uint32_t base = IMX_FEC_BASE;
 367         struct mii_dev *bus = NULL;
 368         struct phy_device *phydev = NULL;
 369         int ret;
 370
 371         setup_iomux_enet();
 372
 373 #ifdef CONFIG_FEC_MXC
 374         bus = fec_get_miibus(base, -1);
 375         if (!bus)
 376                 return 0;
 377         /* scan phy 4,5,6,7 */
 378         phydev = phy_find_by_mask(bus, (0xf << 4), PHY_INTERFACE_MODE_RGMII);
 379         if (!phydev) {
 380                 free(bus);
 381                 return 0;
 382         }
 383         printf("using phy at %d\n", phydev->addr);
 384         ret  = fec_probe(bis, -1, base, bus, phydev);
 385         if (ret) {
 386                 printf("FEC MXC: %s:failed\n", __func__);
 387                 free(phydev);
 388                 free(bus);
 389         }
 390 #endif
 391
 392 #ifdef CONFIG_MV_UDC
 393         /* For otg ethernet*/
 394         usb_eth_initialize(bis);
 395 #endif
 396         return 0;
 397 }
 398
 399 static void setup_buttons(void)
 400 {
 401         imx_iomux_v3_setup_multiple_pads(button_pads,
 402                                          ARRAY_SIZE(button_pads));
 403 }
 404
 405 #if defined(CONFIG_VIDEO_IPUV3)
 406
 407 static iomux_v3_cfg_t const backlight_pads[] = {
 408         /* Backlight on RGB connector: J15 */
 409         MX6_PAD_SD1_DAT3__GPIO1_IO21 | MUX_PAD_CTRL(NO_PAD_CTRL),
 410 #define RGB_BACKLIGHT_GP IMX_GPIO_NR(1, 21)
 411
 412         /* Backlight on LVDS connector: J6 */
 413         MX6_PAD_SD1_CMD__GPIO1_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
 414 #define LVDS_BACKLIGHT_GP IMX_GPIO_NR(1, 18)
 415 };
 416
 417 static iomux_v3_cfg_t const rgb_pads[] = {
 418         MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
 419         MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
 420         MX6_PAD_DI0_PIN2__IPU1_DI0_PIN02,
 421         MX6_PAD_DI0_PIN3__IPU1_DI0_PIN03,
 422         MX6_PAD_DI0_PIN4__GPIO4_IO20,
 423         MX6_PAD_DISP0_DAT0__IPU1_DISP0_DATA00,
 424         MX6_PAD_DISP0_DAT1__IPU1_DISP0_DATA01,
 425         MX6_PAD_DISP0_DAT2__IPU1_DISP0_DATA02,
 426         MX6_PAD_DISP0_DAT3__IPU1_DISP0_DATA03,
 427         MX6_PAD_DISP0_DAT4__IPU1_DISP0_DATA04,
 428         MX6_PAD_DISP0_DAT5__IPU1_DISP0_DATA05,
 429         MX6_PAD_DISP0_DAT6__IPU1_DISP0_DATA06,
 430         MX6_PAD_DISP0_DAT7__IPU1_DISP0_DATA07,
 431         MX6_PAD_DISP0_DAT8__IPU1_DISP0_DATA08,
 432         MX6_PAD_DISP0_DAT9__IPU1_DISP0_DATA09,
 433         MX6_PAD_DISP0_DAT10__IPU1_DISP0_DATA10,
 434         MX6_PAD_DISP0_DAT11__IPU1_DISP0_DATA11,
 435         MX6_PAD_DISP0_DAT12__IPU1_DISP0_DATA12,
 436         MX6_PAD_DISP0_DAT13__IPU1_DISP0_DATA13,
 437         MX6_PAD_DISP0_DAT14__IPU1_DISP0_DATA14,
 438         MX6_PAD_DISP0_DAT15__IPU1_DISP0_DATA15,
 439         MX6_PAD_DISP0_DAT16__IPU1_DISP0_DATA16,
 440         MX6_PAD_DISP0_DAT17__IPU1_DISP0_DATA17,
 441         MX6_PAD_DISP0_DAT18__IPU1_DISP0_DATA18,
 442         MX6_PAD_DISP0_DAT19__IPU1_DISP0_DATA19,
 443         MX6_PAD_DISP0_DAT20__IPU1_DISP0_DATA20,
 444         MX6_PAD_DISP0_DAT21__IPU1_DISP0_DATA21,
 445         MX6_PAD_DISP0_DAT22__IPU1_DISP0_DATA22,
 446         MX6_PAD_DISP0_DAT23__IPU1_DISP0_DATA23,
 447 };
 448
 449 struct display_info_t {
 450         int     bus;
 451         int     addr;
 452         int     pixfmt;
 453         int     (*detect)(struct display_info_t const *dev);
 454         void    (*enable)(struct display_info_t const *dev);
 455         struct  fb_videomode mode;
 456 };
 457
 458
 459 static int detect_hdmi(struct display_info_t const *dev)
 460 {
 461         struct hdmi_regs *hdmi  = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
 462         return readb(&hdmi->phy_stat0) & HDMI_DVI_STAT;
 463 }
 464
 465 static void do_enable_hdmi(struct display_info_t const *dev)
 466 {
 467         imx_enable_hdmi_phy();
 468 }
 469
 470 static int detect_i2c(struct display_info_t const *dev)
 471 {
 472         return ((0 == i2c_set_bus_num(dev->bus))
 473                 &&
 474                 (0 == i2c_probe(dev->addr)));
 475 }
 476
 477 static void enable_lvds(struct display_info_t const *dev)
 478 {
 479         struct iomuxc *iomux = (struct iomuxc *)
 480                                 IOMUXC_BASE_ADDR;
 481         u32 reg = readl(&iomux->gpr[2]);
 482         reg |= IOMUXC_GPR2_DATA_WIDTH_CH0_24BIT;
 483         writel(reg, &iomux->gpr[2]);
 484         gpio_direction_output(LVDS_BACKLIGHT_GP, 1);
 485 }
 486
 487 static void enable_rgb(struct display_info_t const *dev)
 488 {
 489         imx_iomux_v3_setup_multiple_pads(
 490                 rgb_pads,
 491                  ARRAY_SIZE(rgb_pads));
 492         gpio_direction_output(RGB_BACKLIGHT_GP, 1);
 493 }
 494
 495 static struct display_info_t const displays[] = {{
 496         .bus    = -1,
 497         .addr   = 0,
 498         .pixfmt = IPU_PIX_FMT_RGB24,
 499         .detect = detect_hdmi,
 500         .enable = do_enable_hdmi,
 501         .mode   = {
 502                 .name           = "HDMI",
 503                 .refresh        = 60,
 504                 .xres           = 1024,
 505                 .yres           = 768,
 506                 .pixclock       = 15385,
 507                 .left_margin    = 220,
 508                 .right_margin   = 40,
 509                 .upper_margin   = 21,
 510                 .lower_margin   = 7,
 511                 .hsync_len      = 60,
 512                 .vsync_len      = 10,
 513                 .sync           = FB_SYNC_EXT,
 514                 .vmode          = FB_VMODE_NONINTERLACED
 515 } }, {
 516         .bus    = 2,
 517         .addr   = 0x4,
 518         .pixfmt = IPU_PIX_FMT_LVDS666,
 519         .detect = detect_i2c,
 520         .enable = enable_lvds,
 521         .mode   = {
 522                 .name           = "Hannstar-XGA",
 523                 .refresh        = 60,
 524                 .xres           = 1024,
 525                 .yres           = 768,
 526                 .pixclock       = 15385,
 527                 .left_margin    = 220,
 528                 .right_margin   = 40,
 529                 .upper_margin   = 21,
 530                 .lower_margin   = 7,
 531                 .hsync_len      = 60,
 532                 .vsync_len      = 10,
 533                 .sync           = FB_SYNC_EXT,
 534                 .vmode          = FB_VMODE_NONINTERLACED
 535 } }, {
 536         .bus    = 2,
 537         .addr   = 0x38,
 538         .pixfmt = IPU_PIX_FMT_LVDS666,
 539         .detect = detect_i2c,
 540         .enable = enable_lvds,
 541         .mode   = {
 542                 .name           = "wsvga-lvds",
 543                 .refresh        = 60,
 544                 .xres           = 1024,
 545                 .yres           = 600,
 546                 .pixclock       = 15385,
 547                 .left_margin    = 220,
 548                 .right_margin   = 40,
 549                 .upper_margin   = 21,
 550                 .lower_margin   = 7,
 551                 .hsync_len      = 60,
 552                 .vsync_len      = 10,
 553                 .sync           = FB_SYNC_EXT,
 554                 .vmode          = FB_VMODE_NONINTERLACED
 555 } }, {
 556         .bus    = 2,
 557         .addr   = 0x48,
 558         .pixfmt = IPU_PIX_FMT_RGB666,
 559         .detect = detect_i2c,
 560         .enable = enable_rgb,
 561         .mode   = {
 562                 .name           = "wvga-rgb",
 563                 .refresh        = 57,
 564                 .xres           = 800,
 565                 .yres           = 480,
 566                 .pixclock       = 37037,
 567                 .left_margin    = 40,
 568                 .right_margin   = 60,
 569                 .upper_margin   = 10,
 570                 .lower_margin   = 10,
 571                 .hsync_len      = 20,
 572                 .vsync_len      = 10,
 573                 .sync           = 0,
 574                 .vmode          = FB_VMODE_NONINTERLACED
 575 } } };
 576
 577 int board_video_skip(void)
 578 {
 579         int i;
 580         int ret;
 581         char const *panel = getenv("panel");
 582         if (!panel) {
 583                 for (i = 0; i < ARRAY_SIZE(displays); i++) {
 584                         struct display_info_t const *dev = displays+i;
 585                         if (dev->detect(dev)) {
 586                                 panel = dev->mode.name;
 587                                 printf("auto-detected panel %s\n", panel);
 588                                 break;
 589                         }
 590                 }
 591                 if (!panel) {
 592                         panel = displays[0].mode.name;
 593                         printf("No panel detected: default to %s\n", panel);
 594                         i = 0;
 595                 }
 596         } else {
 597                 for (i = 0; i < ARRAY_SIZE(displays); i++) {
 598                         if (!strcmp(panel, displays[i].mode.name))
 599                                 break;
 600                 }
 601         }
 602         if (i < ARRAY_SIZE(displays)) {
 603                 ret = ipuv3_fb_init(&displays[i].mode, 0,
 604                                     displays[i].pixfmt);
 605                 if (!ret) {
 606                         displays[i].enable(displays+i);
 607                         printf("Display: %s (%ux%u)\n",
 608                                displays[i].mode.name,
 609                                displays[i].mode.xres,
 610                                displays[i].mode.yres);
 611                 } else {
 612                         printf("LCD %s cannot be configured: %d\n",
 613                                displays[i].mode.name, ret);
 614                 }
 615         } else {
 616                 printf("unsupported panel %s\n", panel);
 617                 ret = -EINVAL;
 618         }
 619         return (0 != ret);
 620 }
 621
 622 static void setup_display(void)
 623 {
 624         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 625         struct iomuxc *iomux = (struct iomuxc *)IOMUXC_BASE_ADDR;
 626         int reg;
 627
 628         enable_ipu_clock();
 629         imx_setup_hdmi();
 630         /* Turn on LDB0,IPU,IPU DI0 clocks */
 631         reg = __raw_readl(&mxc_ccm->CCGR3);
 632         reg |=  MXC_CCM_CCGR3_LDB_DI0_MASK;
 633         writel(reg, &mxc_ccm->CCGR3);
 634
 635         /* set LDB0, LDB1 clk select to 011/011 */
 636         reg = readl(&mxc_ccm->cs2cdr);
 637         reg &= ~(MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_MASK
 638                  |MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK);
 639         reg |= (3<<MXC_CCM_CS2CDR_LDB_DI0_CLK_SEL_OFFSET)
 640               |(3<<MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET);
 641         writel(reg, &mxc_ccm->cs2cdr);
 642
 643         reg = readl(&mxc_ccm->cscmr2);
 644         reg |= MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV;
 645         writel(reg, &mxc_ccm->cscmr2);
 646
 647         reg = readl(&mxc_ccm->chsccdr);
 648         reg |= (CHSCCDR_CLK_SEL_LDB_DI0
 649                 <<MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_OFFSET);
 650         writel(reg, &mxc_ccm->chsccdr);
 651
 652         reg = IOMUXC_GPR2_BGREF_RRMODE_EXTERNAL_RES
 653              |IOMUXC_GPR2_DI1_VS_POLARITY_ACTIVE_HIGH
 654              |IOMUXC_GPR2_DI0_VS_POLARITY_ACTIVE_LOW
 655              |IOMUXC_GPR2_BIT_MAPPING_CH1_SPWG
 656              |IOMUXC_GPR2_DATA_WIDTH_CH1_18BIT
 657              |IOMUXC_GPR2_BIT_MAPPING_CH0_SPWG
 658              |IOMUXC_GPR2_DATA_WIDTH_CH0_18BIT
 659              |IOMUXC_GPR2_LVDS_CH1_MODE_DISABLED
 660              |IOMUXC_GPR2_LVDS_CH0_MODE_ENABLED_DI0;
 661         writel(reg, &iomux->gpr[2]);
 662
 663         reg = readl(&iomux->gpr[3]);
 664         reg = (reg & ~(IOMUXC_GPR3_LVDS0_MUX_CTL_MASK
 665                         |IOMUXC_GPR3_HDMI_MUX_CTL_MASK))
 666             | (IOMUXC_GPR3_MUX_SRC_IPU1_DI0
 667                <<IOMUXC_GPR3_LVDS0_MUX_CTL_OFFSET);
 668         writel(reg, &iomux->gpr[3]);
 669
 670         /* backlights off until needed */
 671         imx_iomux_v3_setup_multiple_pads(backlight_pads,
 672                                          ARRAY_SIZE(backlight_pads));
 673         gpio_direction_input(LVDS_BACKLIGHT_GP);
 674         gpio_direction_input(RGB_BACKLIGHT_GP);
 675 }
 676 #endif
 677
 678 int board_early_init_f(void)
 679 {
 680         setup_iomux_uart();
 681
 682         /* Disable wl1271 For Nitrogen6w */
 683         gpio_direction_input(WL12XX_WL_IRQ_GP);
 684         gpio_direction_output(WL12XX_WL_ENABLE_GP, 0);
 685         gpio_direction_output(WL12XX_BT_ENABLE_GP, 0);
 686         gpio_direction_output(GP_USB_OTG_PWR, 0); /* OTG power off */
 687
 688         imx_iomux_v3_setup_multiple_pads(wl12xx_pads, ARRAY_SIZE(wl12xx_pads));
 689         setup_buttons();
 690
 691 #if defined(CONFIG_VIDEO_IPUV3)
 692         setup_display();
 693 #endif
 694         return 0;
 695 }
 696
 697 /*
 698  * Do not overwrite the console
 699  * Use always serial for U-Boot console
 700  */
 701 int overwrite_console(void)
 702 {
 703         return 1;
 704 }
 705
 706 int board_init(void)
 707 {
 708         struct iomuxc_base_regs *const iomuxc_regs
 709                 = (struct iomuxc_base_regs *)IOMUXC_BASE_ADDR;
 710
 711         clrsetbits_le32(&iomuxc_regs->gpr[1],
 712                         IOMUXC_GPR1_OTG_ID_MASK,
 713                         IOMUXC_GPR1_OTG_ID_GPIO1);
 714
 715         imx_iomux_v3_setup_multiple_pads(misc_pads, ARRAY_SIZE(misc_pads));
 716
 717         /* address of boot parameters */
 718         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 719
 720 #ifdef CONFIG_MXC_SPI
 721         setup_spi();
 722 #endif
 723         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info0);
 724         setup_i2c(1, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 725         setup_i2c(2, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info2);
 726
 727 #ifdef CONFIG_CMD_SATA
 728         setup_sata();
 729 #endif
 730
 731         return 0;
 732 }
 733
 734 int checkboard(void)
 735 {
 736         if (gpio_get_value(WL12XX_WL_IRQ_GP))
 737                 puts("Board: Nitrogen6X\n");
 738         else
 739                 puts("Board: SABRE Lite\n");
 740
 741         return 0;
 742 }
 743
 744 struct button_key {
 745         char const      *name;
 746         unsigned        gpnum;
 747         char            ident;
 748 };
 749
 750 static struct button_key const buttons[] = {
 751         {"back",        IMX_GPIO_NR(2, 2),      'B'},
 752         {"home",        IMX_GPIO_NR(2, 4),      'H'},
 753         {"menu",        IMX_GPIO_NR(2, 1),      'M'},
 754         {"search",      IMX_GPIO_NR(2, 3),      'S'},
 755         {"volup",       IMX_GPIO_NR(7, 13),     'V'},
 756         {"voldown",     IMX_GPIO_NR(4, 5),      'v'},
 757 };
 758
 759 /*
 760  * generate a null-terminated string containing the buttons pressed
 761  * returns number of keys pressed
 762  */
 763 static int read_keys(char *buf)
 764 {
 765         int i, numpressed = 0;
 766         for (i = 0; i < ARRAY_SIZE(buttons); i++) {
 767                 if (!gpio_get_value(buttons[i].gpnum))
 768                         buf[numpressed++] = buttons[i].ident;
 769         }
 770         buf[numpressed] = '\0';
 771         return numpressed;
 772 }
 773
 774 static int do_kbd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 775 {
 776         char envvalue[ARRAY_SIZE(buttons)+1];
 777         int numpressed = read_keys(envvalue);
 778         setenv("keybd", envvalue);
 779         return numpressed == 0;
 780 }
 781
 782 U_BOOT_CMD(
 783         kbd, 1, 1, do_kbd,
 784         "Tests for keypresses, sets 'keybd' environment variable",
 785         "Returns 0 (true) to shell if key is pressed."
 786 );
 787
 788 #ifdef CONFIG_PREBOOT
 789 static char const kbd_magic_prefix[] = "key_magic";
 790 static char const kbd_command_prefix[] = "key_cmd";
 791
 792 static void preboot_keys(void)
 793 {
 794         int numpressed;
 795         char keypress[ARRAY_SIZE(buttons)+1];
 796         numpressed = read_keys(keypress);
 797         if (numpressed) {
 798                 char *kbd_magic_keys = getenv("magic_keys");
 799                 char *suffix;
 800                 /*
 801                  * loop over all magic keys
 802                  */
 803                 for (suffix = kbd_magic_keys; *suffix; ++suffix) {
 804                         char *keys;
 805                         char magic[sizeof(kbd_magic_prefix) + 1];
 806                         sprintf(magic, "%s%c", kbd_magic_prefix, *suffix);
 807                         keys = getenv(magic);
 808                         if (keys) {
 809                                 if (!strcmp(keys, keypress))
 810                                         break;
 811                         }
 812                 }
 813                 if (*suffix) {
 814                         char cmd_name[sizeof(kbd_command_prefix) + 1];
 815                         char *cmd;
 816                         sprintf(cmd_name, "%s%c", kbd_command_prefix, *suffix);
 817                         cmd = getenv(cmd_name);
 818                         if (cmd) {
 819                                 setenv("preboot", cmd);
 820                                 return;
 821                         }
 822                 }
 823         }
 824 }
 825 #endif
 826
 827 #ifdef CONFIG_CMD_BMODE
 828 static const struct boot_mode board_boot_modes[] = {
 829         /* 4 bit bus width */
 830         {"mmc0",        MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 831         {"mmc1",        MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
 832         {NULL,          0},
 833 };
 834 #endif
 835
 836 int misc_init_r(void)
 837 {
 838 #ifdef CONFIG_PREBOOT
 839         preboot_keys();
 840 #endif
 841
 842 #ifdef CONFIG_CMD_BMODE
 843         add_board_boot_modes(board_boot_modes);
 844 #endif
 845         return 0;
 846 }