git.sur5r.net Git - u-boot/blob - board/dhelectronics/dh_imx6/dh_imx6_spl.c

   1 /*
   2  * DHCOM DH-iMX6 PDK SPL support
   3  *
   4  * Copyright (C) 2017 Marek Vasut <marex@denx.de>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <asm/arch/clock.h>
  11 #include <asm/arch/crm_regs.h>
  12 #include <asm/arch/imx-regs.h>
  13 #include <asm/arch/iomux.h>
  14 #include <asm/arch/mx6-ddr.h>
  15 #include <asm/arch/mx6-pins.h>
  16 #include <asm/arch/sys_proto.h>
  17 #include <asm/gpio.h>
  18 #include <asm/mach-imx/boot_mode.h>
  19 #include <asm/mach-imx/iomux-v3.h>
  20 #include <asm/mach-imx/mxc_i2c.h>
  21 #include <asm/io.h>
  22 #include <errno.h>
  23 #include <fuse.h>
  24 #include <fsl_esdhc.h>
  25 #include <i2c.h>
  26 #include <mmc.h>
  27 #include <spl.h>
  28
  29 #define ENET_PAD_CTRL                                                   \
  30         (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |  \
  31          PAD_CTL_HYS)
  32
  33 #define GPIO_PAD_CTRL                                                   \
  34         (PAD_CTL_HYS | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm)
  35
  36 #define SPI_PAD_CTRL                                                    \
  37         (PAD_CTL_HYS | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |          \
  38         PAD_CTL_SRE_FAST)
  39
  40 #define UART_PAD_CTRL                                                   \
  41         (PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |  \
  42          PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  43
  44 #define USDHC_PAD_CTRL                                                  \
  45         (PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |   \
  46          PAD_CTL_SRE_FAST | PAD_CTL_HYS)
  47
  48 static const struct mx6dq_iomux_ddr_regs dhcom6dq_ddr_ioregs = {
  49         .dram_sdclk_0   = 0x00020030,
  50         .dram_sdclk_1   = 0x00020030,
  51         .dram_cas       = 0x00020030,
  52         .dram_ras       = 0x00020030,
  53         .dram_reset     = 0x00020030,
  54         .dram_sdcke0    = 0x00003000,
  55         .dram_sdcke1    = 0x00003000,
  56         .dram_sdba2     = 0x00000000,
  57         .dram_sdodt0    = 0x00003030,
  58         .dram_sdodt1    = 0x00003030,
  59         .dram_sdqs0     = 0x00000030,
  60         .dram_sdqs1     = 0x00000030,
  61         .dram_sdqs2     = 0x00000030,
  62         .dram_sdqs3     = 0x00000030,
  63         .dram_sdqs4     = 0x00000030,
  64         .dram_sdqs5     = 0x00000030,
  65         .dram_sdqs6     = 0x00000030,
  66         .dram_sdqs7     = 0x00000030,
  67         .dram_dqm0      = 0x00020030,
  68         .dram_dqm1      = 0x00020030,
  69         .dram_dqm2      = 0x00020030,
  70         .dram_dqm3      = 0x00020030,
  71         .dram_dqm4      = 0x00020030,
  72         .dram_dqm5      = 0x00020030,
  73         .dram_dqm6      = 0x00020030,
  74         .dram_dqm7      = 0x00020030,
  75 };
  76
  77 static const struct mx6dq_iomux_grp_regs dhcom6dq_grp_ioregs = {
  78         .grp_ddr_type   = 0x000C0000,
  79         .grp_ddrmode_ctl = 0x00020000,
  80         .grp_ddrpke     = 0x00000000,
  81         .grp_addds      = 0x00000030,
  82         .grp_ctlds      = 0x00000030,
  83         .grp_ddrmode    = 0x00020000,
  84         .grp_b0ds       = 0x00000030,
  85         .grp_b1ds       = 0x00000030,
  86         .grp_b2ds       = 0x00000030,
  87         .grp_b3ds       = 0x00000030,
  88         .grp_b4ds       = 0x00000030,
  89         .grp_b5ds       = 0x00000030,
  90         .grp_b6ds       = 0x00000030,
  91         .grp_b7ds       = 0x00000030,
  92 };
  93
  94 static const struct mx6sdl_iomux_ddr_regs dhcom6sdl_ddr_ioregs = {
  95         .dram_sdclk_0   = 0x00020030,
  96         .dram_sdclk_1   = 0x00020030,
  97         .dram_cas       = 0x00020030,
  98         .dram_ras       = 0x00020030,
  99         .dram_reset     = 0x00020030,
 100         .dram_sdcke0    = 0x00003000,
 101         .dram_sdcke1    = 0x00003000,
 102         .dram_sdba2     = 0x00000000,
 103         .dram_sdodt0    = 0x00003030,
 104         .dram_sdodt1    = 0x00003030,
 105         .dram_sdqs0     = 0x00000030,
 106         .dram_sdqs1     = 0x00000030,
 107         .dram_sdqs2     = 0x00000030,
 108         .dram_sdqs3     = 0x00000030,
 109         .dram_sdqs4     = 0x00000030,
 110         .dram_sdqs5     = 0x00000030,
 111         .dram_sdqs6     = 0x00000030,
 112         .dram_sdqs7     = 0x00000030,
 113         .dram_dqm0      = 0x00020030,
 114         .dram_dqm1      = 0x00020030,
 115         .dram_dqm2      = 0x00020030,
 116         .dram_dqm3      = 0x00020030,
 117         .dram_dqm4      = 0x00020030,
 118         .dram_dqm5      = 0x00020030,
 119         .dram_dqm6      = 0x00020030,
 120         .dram_dqm7      = 0x00020030,
 121 };
 122
 123 static const struct mx6sdl_iomux_grp_regs dhcom6sdl_grp_ioregs = {
 124         .grp_ddr_type   = 0x000C0000,
 125         .grp_ddrmode_ctl = 0x00020000,
 126         .grp_ddrpke     = 0x00000000,
 127         .grp_addds      = 0x00000030,
 128         .grp_ctlds      = 0x00000030,
 129         .grp_ddrmode    = 0x00020000,
 130         .grp_b0ds       = 0x00000030,
 131         .grp_b1ds       = 0x00000030,
 132         .grp_b2ds       = 0x00000030,
 133         .grp_b3ds       = 0x00000030,
 134         .grp_b4ds       = 0x00000030,
 135         .grp_b5ds       = 0x00000030,
 136         .grp_b6ds       = 0x00000030,
 137         .grp_b7ds       = 0x00000030,
 138 };
 139
 140 static const struct mx6_mmdc_calibration dhcom_mmdc_calib = {
 141         .p0_mpwldectrl0 = 0x0011000E,
 142         .p0_mpwldectrl1 = 0x000E001B,
 143         .p1_mpwldectrl0 = 0x00190015,
 144         .p1_mpwldectrl1 = 0x00070018,
 145         .p0_mpdgctrl0   = 0x42720306,
 146         .p0_mpdgctrl1   = 0x026F0266,
 147         .p1_mpdgctrl0   = 0x4273030A,
 148         .p1_mpdgctrl1   = 0x02740240,
 149         .p0_mprddlctl   = 0x45393B3E,
 150         .p1_mprddlctl   = 0x403A3747,
 151         .p0_mpwrdlctl   = 0x40434541,
 152         .p1_mpwrdlctl   = 0x473E4A3B,
 153 };
 154
 155 static const struct mx6_ddr3_cfg dhcom_mem_ddr = {
 156         .mem_speed      = 1600,
 157         .density        = 2,
 158         .width          = 64,
 159         .banks          = 8,
 160         .rowaddr        = 14,
 161         .coladdr        = 10,
 162         .pagesz         = 2,
 163         .trcd           = 1312,
 164         .trcmin         = 5863,
 165         .trasmin        = 3750,
 166 };
 167
 168 static const struct mx6_ddr_sysinfo dhcom_ddr_info = {
 169         /* width of data bus:0=16,1=32,2=64 */
 170         .dsize          = 2,
 171         .cs_density     = 16,
 172         .ncs            = 1,    /* single chip select */
 173         .cs1_mirror     = 1,
 174         .rtt_wr         = 1,    /* DDR3_RTT_60_OHM, RTT_Wr = RZQ/4 */
 175         .rtt_nom        = 1,    /* DDR3_RTT_60_OHM, RTT_Nom = RZQ/4 */
 176         .walat          = 1,    /* Write additional latency */
 177         .ralat          = 5,    /* Read additional latency */
 178         .mif3_mode      = 3,    /* Command prediction working mode */
 179         .bi_on          = 1,    /* Bank interleaving enabled */
 180         .sde_to_rst     = 0x10, /* 14 cycles, 200us (JEDEC default) */
 181         .rst_to_cke     = 0x23, /* 33 cycles, 500us (JEDEC default) */
 182         .refsel         = 1,    /* Refresh cycles at 32KHz */
 183         .refr           = 3,    /* 4 refresh commands per refresh cycle */
 184 };
 185
 186 static void ccgr_init(void)
 187 {
 188         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 189
 190         writel(0x00C03F3F, &ccm->CCGR0);
 191         writel(0x0030FC03, &ccm->CCGR1);
 192         writel(0x0FFFC000, &ccm->CCGR2);
 193         writel(0x3FF00000, &ccm->CCGR3);
 194         writel(0x00FFF300, &ccm->CCGR4);
 195         writel(0x0F0000C3, &ccm->CCGR5);
 196         writel(0x000003FF, &ccm->CCGR6);
 197 }
 198
 199 /* Board ID */
 200 static iomux_v3_cfg_t const hwcode_pads[] = {
 201         IOMUX_PADS(PAD_EIM_A19__GPIO2_IO19      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 202         IOMUX_PADS(PAD_EIM_A23__GPIO6_IO06      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 203         IOMUX_PADS(PAD_EIM_A22__GPIO2_IO16      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 204 };
 205
 206 static void setup_iomux_boardid(void)
 207 {
 208         /* HW code pins: Setup alternate function and configure pads */
 209         SETUP_IOMUX_PADS(hwcode_pads);
 210 }
 211
 212 /* GPIO */
 213 static iomux_v3_cfg_t const gpio_pads[] = {
 214         IOMUX_PADS(PAD_GPIO_2__GPIO1_IO02       | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 215         IOMUX_PADS(PAD_GPIO_4__GPIO1_IO04       | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 216         IOMUX_PADS(PAD_GPIO_5__GPIO1_IO05       | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 217         IOMUX_PADS(PAD_CSI0_DAT17__GPIO6_IO03   | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 218         IOMUX_PADS(PAD_GPIO_19__GPIO4_IO05      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 219         IOMUX_PADS(PAD_DI0_PIN4__GPIO4_IO20     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 220         IOMUX_PADS(PAD_EIM_D27__GPIO3_IO27      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 221         IOMUX_PADS(PAD_KEY_ROW0__GPIO4_IO07     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 222         IOMUX_PADS(PAD_KEY_COL1__GPIO4_IO08     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 223         IOMUX_PADS(PAD_NANDF_CS1__GPIO6_IO14    | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 224         IOMUX_PADS(PAD_NANDF_CS2__GPIO6_IO15    | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 225         IOMUX_PADS(PAD_KEY_ROW1__GPIO4_IO09     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 226         IOMUX_PADS(PAD_SD3_DAT5__GPIO7_IO00     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 227         IOMUX_PADS(PAD_SD3_DAT4__GPIO7_IO01     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 228         IOMUX_PADS(PAD_CSI0_VSYNC__GPIO5_IO21   | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 229         IOMUX_PADS(PAD_GPIO_18__GPIO7_IO13      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 230         IOMUX_PADS(PAD_SD1_CMD__GPIO1_IO18      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 231         IOMUX_PADS(PAD_SD1_DAT0__GPIO1_IO16     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 232         IOMUX_PADS(PAD_SD1_DAT1__GPIO1_IO17     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 233         IOMUX_PADS(PAD_SD1_DAT2__GPIO1_IO19     | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 234         IOMUX_PADS(PAD_SD1_CLK__GPIO1_IO20      | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 235         IOMUX_PADS(PAD_CSI0_PIXCLK__GPIO5_IO18  | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 236         IOMUX_PADS(PAD_CSI0_MCLK__GPIO5_IO19    | MUX_PAD_CTRL(GPIO_PAD_CTRL)),
 237 };
 238
 239 static void setup_iomux_gpio(void)
 240 {
 241         SETUP_IOMUX_PADS(gpio_pads);
 242 }
 243
 244 /* Ethernet */
 245 static iomux_v3_cfg_t const enet_pads[] = {
 246         IOMUX_PADS(PAD_ENET_MDIO__ENET_MDIO     | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 247         IOMUX_PADS(PAD_ENET_MDC__ENET_MDC       | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 248         IOMUX_PADS(PAD_ENET_TX_EN__ENET_TX_EN   | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 249         IOMUX_PADS(PAD_ENET_TXD0__ENET_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 250         IOMUX_PADS(PAD_ENET_TXD1__ENET_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 251         IOMUX_PADS(PAD_GPIO_16__ENET_REF_CLK    | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 252         IOMUX_PADS(PAD_ENET_RX_ER__ENET_RX_ER   | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 253         IOMUX_PADS(PAD_ENET_RXD0__ENET_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 254         IOMUX_PADS(PAD_ENET_RXD1__ENET_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 255         IOMUX_PADS(PAD_ENET_CRS_DV__ENET_RX_EN  | MUX_PAD_CTRL(ENET_PAD_CTRL)),
 256         /* SMSC PHY Reset */
 257         IOMUX_PADS(PAD_EIM_WAIT__GPIO5_IO00     | MUX_PAD_CTRL(NO_PAD_CTRL)),
 258         /* ENET_VIO_GPIO */
 259         IOMUX_PADS(PAD_GPIO_7__GPIO1_IO07       | MUX_PAD_CTRL(NO_PAD_CTRL)),
 260         /* ENET_Interrupt - (not used) */
 261         IOMUX_PADS(PAD_RGMII_RD0__GPIO6_IO25    | MUX_PAD_CTRL(NO_PAD_CTRL)),
 262 };
 263
 264 static void setup_iomux_enet(void)
 265 {
 266         SETUP_IOMUX_PADS(enet_pads);
 267 }
 268
 269 /* SD interface */
 270 static iomux_v3_cfg_t const usdhc2_pads[] = {
 271         IOMUX_PADS(PAD_SD2_DAT0__SD2_DATA0      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 272         IOMUX_PADS(PAD_SD2_DAT1__SD2_DATA1      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 273         IOMUX_PADS(PAD_SD2_DAT2__SD2_DATA2      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 274         IOMUX_PADS(PAD_SD2_DAT3__SD2_DATA3      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 275         IOMUX_PADS(PAD_SD2_CLK__SD2_CLK         | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 276         IOMUX_PADS(PAD_SD2_CMD__SD2_CMD         | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 277         IOMUX_PADS(PAD_NANDF_CS3__GPIO6_IO16    | MUX_PAD_CTRL(NO_PAD_CTRL)), /* CD */
 278 };
 279
 280 /* onboard microSD */
 281 static iomux_v3_cfg_t const usdhc3_pads[] = {
 282         IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 283         IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 284         IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 285         IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 286         IOMUX_PADS(PAD_SD3_CLK__SD3_CLK         | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 287         IOMUX_PADS(PAD_SD3_CMD__SD3_CMD         | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 288         IOMUX_PADS(PAD_SD3_RST__GPIO7_IO08      | MUX_PAD_CTRL(NO_PAD_CTRL)), /* CD */
 289 };
 290
 291 /* eMMC */
 292 static iomux_v3_cfg_t const usdhc4_pads[] = {
 293         IOMUX_PADS(PAD_SD4_DAT0__SD4_DATA0      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 294         IOMUX_PADS(PAD_SD4_DAT1__SD4_DATA1      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 295         IOMUX_PADS(PAD_SD4_DAT2__SD4_DATA2      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 296         IOMUX_PADS(PAD_SD4_DAT3__SD4_DATA3      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 297         IOMUX_PADS(PAD_SD4_DAT4__SD4_DATA4      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 298         IOMUX_PADS(PAD_SD4_DAT5__SD4_DATA5      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 299         IOMUX_PADS(PAD_SD4_DAT6__SD4_DATA6      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 300         IOMUX_PADS(PAD_SD4_DAT7__SD4_DATA7      | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 301         IOMUX_PADS(PAD_SD4_CLK__SD4_CLK         | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 302         IOMUX_PADS(PAD_SD4_CMD__SD4_CMD         | MUX_PAD_CTRL(USDHC_PAD_CTRL)),
 303 };
 304
 305 /* SD */
 306 static void setup_iomux_sd(void)
 307 {
 308         SETUP_IOMUX_PADS(usdhc2_pads);
 309         SETUP_IOMUX_PADS(usdhc3_pads);
 310         SETUP_IOMUX_PADS(usdhc4_pads);
 311 }
 312
 313 /* SPI */
 314 static iomux_v3_cfg_t const ecspi1_pads[] = {
 315         /* SS0 */
 316         IOMUX_PADS(PAD_EIM_EB2__GPIO2_IO30      | MUX_PAD_CTRL(SPI_PAD_CTRL)),
 317         IOMUX_PADS(PAD_EIM_D17__ECSPI1_MISO     | MUX_PAD_CTRL(SPI_PAD_CTRL)),
 318         IOMUX_PADS(PAD_EIM_D18__ECSPI1_MOSI     | MUX_PAD_CTRL(SPI_PAD_CTRL)),
 319         IOMUX_PADS(PAD_EIM_D16__ECSPI1_SCLK     | MUX_PAD_CTRL(SPI_PAD_CTRL)),
 320 };
 321
 322 static void setup_iomux_spi(void)
 323 {
 324         SETUP_IOMUX_PADS(ecspi1_pads);
 325 }
 326
 327 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 328 {
 329         if (bus == 0 && cs == 0)
 330                 return IMX_GPIO_NR(2, 30);
 331         else
 332                 return -1;
 333 }
 334
 335 /* UART */
 336 static iomux_v3_cfg_t const uart1_pads[] = {
 337         IOMUX_PADS(PAD_SD3_DAT7__UART1_TX_DATA  | MUX_PAD_CTRL(UART_PAD_CTRL)),
 338         IOMUX_PADS(PAD_SD3_DAT6__UART1_RX_DATA  | MUX_PAD_CTRL(UART_PAD_CTRL)),
 339 };
 340
 341 static void setup_iomux_uart(void)
 342 {
 343         SETUP_IOMUX_PADS(uart1_pads);
 344 }
 345
 346 /* USB */
 347 static iomux_v3_cfg_t const usb_pads[] = {
 348         IOMUX_PADS(PAD_GPIO_1__USB_OTG_ID       | MUX_PAD_CTRL(NO_PAD_CTRL)),
 349         IOMUX_PADS(PAD_EIM_D31__GPIO3_IO31      | MUX_PAD_CTRL(NO_PAD_CTRL)),
 350 };
 351
 352 static void setup_iomux_usb(void)
 353 {
 354         SETUP_IOMUX_PADS(usb_pads);
 355 }
 356
 357 void board_init_f(ulong dummy)
 358 {
 359         /* setup AIPS and disable watchdog */
 360         arch_cpu_init();
 361
 362         ccgr_init();
 363         gpr_init();
 364
 365         /* setup GP timer */
 366         timer_init();
 367
 368         setup_iomux_boardid();
 369         setup_iomux_gpio();
 370         setup_iomux_enet();
 371         setup_iomux_sd();
 372         setup_iomux_spi();
 373         setup_iomux_uart();
 374         setup_iomux_usb();
 375
 376         /* UART clocks enabled and gd valid - init serial console */
 377         preloader_console_init();
 378
 379         /* Start the DDR DRAM */
 380         if (is_mx6dq())
 381                 mx6dq_dram_iocfg(dhcom_mem_ddr.width, &dhcom6dq_ddr_ioregs,
 382                                  &dhcom6dq_grp_ioregs);
 383         else
 384                 mx6sdl_dram_iocfg(dhcom_mem_ddr.width, &dhcom6sdl_ddr_ioregs,
 385                                   &dhcom6sdl_grp_ioregs);
 386         mx6_dram_cfg(&dhcom_ddr_info, &dhcom_mmdc_calib, &dhcom_mem_ddr);
 387
 388         /* Clear the BSS. */
 389         memset(__bss_start, 0, __bss_end - __bss_start);
 390
 391         /* load/boot image from boot device */
 392         board_init_r(NULL, 0);
 393 }