board/freescale/mx6slevk/mx6slevk.c

   1 /*
   2  * Copyright (C) 2013 Freescale Semiconductor, Inc.
   3  *
   4  * Author: Fabio Estevam <[email protected]>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <asm/arch/clock.h>
  10 #include <asm/arch/iomux.h>
  11 #include <asm/arch/crm_regs.h>
  12 #include <asm/arch/imx-regs.h>
  13 #include <asm/arch/mx6-ddr.h>
  14 #include <asm/arch/mx6-pins.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <asm/gpio.h>
  17 #include <asm/imx-common/iomux-v3.h>
  18 #include <asm/imx-common/mxc_i2c.h>
  19 #include <asm/imx-common/spi.h>
  20 #include <asm/io.h>
  21 #include <linux/sizes.h>
  22 #include <common.h>
  23 #include <fsl_esdhc.h>
  24 #include <i2c.h>
  25 #include <mmc.h>
  26 #include <netdev.h>
  27 #include <power/pmic.h>
  28 #include <power/pfuze100_pmic.h>
  29 #include "../common/pfuze.h"
  30 #include <usb.h>
  31 #include <usb/ehci-ci.h>
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  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_22K_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_PKE | PAD_CTL_PUE |             \
  44         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED   |             \
  45         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 I2C_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |               \
  51                       PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
  52                       PAD_CTL_DSE_40ohm | PAD_CTL_HYS |         \
  53                       PAD_CTL_ODE | PAD_CTL_SRE_FAST)
  54
  55 #define OTGID_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
  56                         PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_LOW |\
  57                         PAD_CTL_DSE_80ohm | PAD_CTL_HYS |       \
  58                         PAD_CTL_SRE_FAST)
  59
  60 #define ETH_PHY_POWER   IMX_GPIO_NR(4, 21)
  61
  62 int dram_init(void)
  63 {
  64         gd->ram_size = imx_ddr_size();
  65
  66         return 0;
  67 }
  68
  69 static iomux_v3_cfg_t const uart1_pads[] = {
  70         MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  71         MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  72 };
  73
  74 static iomux_v3_cfg_t const usdhc1_pads[] = {
  75         /* 8 bit SD */
  76         MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  77         MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  78         MX6_PAD_SD1_DAT0__USDHC1_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  79         MX6_PAD_SD1_DAT1__USDHC1_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  80         MX6_PAD_SD1_DAT2__USDHC1_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  81         MX6_PAD_SD1_DAT3__USDHC1_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  82         MX6_PAD_SD1_DAT4__USDHC1_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  83         MX6_PAD_SD1_DAT5__USDHC1_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  84         MX6_PAD_SD1_DAT6__USDHC1_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  85         MX6_PAD_SD1_DAT7__USDHC1_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  86
  87         /*CD pin*/
  88         MX6_PAD_KEY_ROW7__GPIO_4_7 | MUX_PAD_CTRL(NO_PAD_CTRL),
  89 };
  90
  91 static iomux_v3_cfg_t const usdhc2_pads[] = {
  92         MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  93         MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  94         MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  95         MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  96         MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  97         MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  98
  99         /*CD pin*/
 100         MX6_PAD_SD2_DAT7__GPIO_5_0 | MUX_PAD_CTRL(NO_PAD_CTRL),
 101 };
 102
 103 static iomux_v3_cfg_t const usdhc3_pads[] = {
 104         MX6_PAD_SD3_CLK__USDHC3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 105         MX6_PAD_SD3_CMD__USDHC3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 106         MX6_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 107         MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 108         MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 109         MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
 110
 111         /*CD pin*/
 112         MX6_PAD_REF_CLK_32K__GPIO_3_22 | MUX_PAD_CTRL(NO_PAD_CTRL),
 113 };
 114
 115 static iomux_v3_cfg_t const fec_pads[] = {
 116         MX6_PAD_FEC_MDC__FEC_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
 117         MX6_PAD_FEC_MDIO__FEC_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
 118         MX6_PAD_FEC_CRS_DV__FEC_RX_DV | MUX_PAD_CTRL(ENET_PAD_CTRL),
 119         MX6_PAD_FEC_RXD0__FEC_RX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 120         MX6_PAD_FEC_RXD1__FEC_RX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 121         MX6_PAD_FEC_TX_EN__FEC_TX_EN | MUX_PAD_CTRL(ENET_PAD_CTRL),
 122         MX6_PAD_FEC_TXD0__FEC_TX_DATA0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 123         MX6_PAD_FEC_TXD1__FEC_TX_DATA1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
 124         MX6_PAD_FEC_REF_CLK__FEC_REF_OUT | MUX_PAD_CTRL(ENET_PAD_CTRL),
 125         MX6_PAD_FEC_RX_ER__GPIO_4_19 | MUX_PAD_CTRL(NO_PAD_CTRL),
 126         MX6_PAD_FEC_TX_CLK__GPIO_4_21 | MUX_PAD_CTRL(NO_PAD_CTRL),
 127 };
 128
 129 #ifdef CONFIG_MXC_SPI
 130 static iomux_v3_cfg_t ecspi1_pads[] = {
 131         MX6_PAD_ECSPI1_MISO__ECSPI_MISO | MUX_PAD_CTRL(SPI_PAD_CTRL),
 132         MX6_PAD_ECSPI1_MOSI__ECSPI_MOSI | MUX_PAD_CTRL(SPI_PAD_CTRL),
 133         MX6_PAD_ECSPI1_SCLK__ECSPI_SCLK | MUX_PAD_CTRL(SPI_PAD_CTRL),
 134         MX6_PAD_ECSPI1_SS0__GPIO4_IO11  | MUX_PAD_CTRL(NO_PAD_CTRL),
 135 };
 136
 137 int board_spi_cs_gpio(unsigned bus, unsigned cs)
 138 {
 139         return (bus == 0 && cs == 0) ? (IMX_GPIO_NR(4, 11)) : -1;
 140 }
 141
 142 static void setup_spi(void)
 143 {
 144         imx_iomux_v3_setup_multiple_pads(ecspi1_pads, ARRAY_SIZE(ecspi1_pads));
 145 }
 146 #endif
 147
 148 static void setup_iomux_uart(void)
 149 {
 150         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
 151 }
 152
 153 static void setup_iomux_fec(void)
 154 {
 155         imx_iomux_v3_setup_multiple_pads(fec_pads, ARRAY_SIZE(fec_pads));
 156
 157         /* Power up LAN8720 PHY */
 158         gpio_direction_output(ETH_PHY_POWER , 1);
 159         udelay(15000);
 160 }
 161
 162 #define USDHC1_CD_GPIO  IMX_GPIO_NR(4, 7)
 163 #define USDHC2_CD_GPIO  IMX_GPIO_NR(5, 0)
 164 #define USDHC3_CD_GPIO  IMX_GPIO_NR(3, 22)
 165
 166 static struct fsl_esdhc_cfg usdhc_cfg[3] = {
 167         {USDHC1_BASE_ADDR},
 168         {USDHC2_BASE_ADDR, 0, 4},
 169         {USDHC3_BASE_ADDR, 0, 4},
 170 };
 171
 172 int board_mmc_get_env_dev(int devno)
 173 {
 174         return devno;
 175 }
 176
 177 int board_mmc_getcd(struct mmc *mmc)
 178 {
 179         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 180         int ret = 0;
 181
 182         switch (cfg->esdhc_base) {
 183         case USDHC1_BASE_ADDR:
 184                 ret = !gpio_get_value(USDHC1_CD_GPIO);
 185                 break;
 186         case USDHC2_BASE_ADDR:
 187                 ret = !gpio_get_value(USDHC2_CD_GPIO);
 188                 break;
 189         case USDHC3_BASE_ADDR:
 190                 ret = !gpio_get_value(USDHC3_CD_GPIO);
 191                 break;
 192         }
 193
 194         return ret;
 195 }
 196
 197 int board_mmc_init(bd_t *bis)
 198 {
 199 #ifndef CONFIG_SPL_BUILD
 200         int i, ret;
 201
 202         /*
 203          * According to the board_mmc_init() the following map is done:
 204          * (U-Boot device node)    (Physical Port)
 205          * mmc0                    USDHC1
 206          * mmc1                    USDHC2
 207          * mmc2                    USDHC3
 208          */
 209         for (i = 0; i < CONFIG_SYS_FSL_USDHC_NUM; i++) {
 210                 switch (i) {
 211                 case 0:
 212                         imx_iomux_v3_setup_multiple_pads(
 213                                 usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
 214                         gpio_direction_input(USDHC1_CD_GPIO);
 215                         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 216                         break;
 217                 case 1:
 218                         imx_iomux_v3_setup_multiple_pads(
 219                                 usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
 220                         gpio_direction_input(USDHC2_CD_GPIO);
 221                         usdhc_cfg[1].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 222                         break;
 223                 case 2:
 224                         imx_iomux_v3_setup_multiple_pads(
 225                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
 226                         gpio_direction_input(USDHC3_CD_GPIO);
 227                         usdhc_cfg[2].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 228                         break;
 229                 default:
 230                         printf("Warning: you configured more USDHC controllers"
 231                                 "(%d) than supported by the board\n", i + 1);
 232                         return -EINVAL;
 233                 }
 234
 235                 ret = fsl_esdhc_initialize(bis, &usdhc_cfg[i]);
 236                 if (ret) {
 237                         printf("Warning: failed to initialize "
 238                                 "mmc dev %d\n", i);
 239                         return ret;
 240                 }
 241         }
 242
 243         return 0;
 244 #else
 245         struct src *src_regs = (struct src *)SRC_BASE_ADDR;
 246         u32 val;
 247         u32 port;
 248
 249         val = readl(&src_regs->sbmr1);
 250
 251         /* Boot from USDHC */
 252         port = (val >> 11) & 0x3;
 253         switch (port) {
 254         case 0:
 255                 imx_iomux_v3_setup_multiple_pads(usdhc1_pads,
 256                                                  ARRAY_SIZE(usdhc1_pads));
 257                 gpio_direction_input(USDHC1_CD_GPIO);
 258                 usdhc_cfg[0].esdhc_base = USDHC1_BASE_ADDR;
 259                 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
 260                 break;
 261         case 1:
 262                 imx_iomux_v3_setup_multiple_pads(usdhc2_pads,
 263                                                  ARRAY_SIZE(usdhc2_pads));
 264                 gpio_direction_input(USDHC2_CD_GPIO);
 265                 usdhc_cfg[0].esdhc_base = USDHC2_BASE_ADDR;
 266                 usdhc_cfg[0].max_bus_width = 4;
 267                 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
 268                 break;
 269         case 2:
 270                 imx_iomux_v3_setup_multiple_pads(usdhc3_pads,
 271                                                  ARRAY_SIZE(usdhc3_pads));
 272                 gpio_direction_input(USDHC3_CD_GPIO);
 273                 usdhc_cfg[0].esdhc_base = USDHC3_BASE_ADDR;
 274                 usdhc_cfg[0].max_bus_width = 4;
 275                 usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
 276                 break;
 277         }
 278
 279         gd->arch.sdhc_clk = usdhc_cfg[0].sdhc_clk;
 280         return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
 281 #endif
 282 }
 283
 284 #ifdef CONFIG_SYS_I2C_MXC
 285 #define PC      MUX_PAD_CTRL(I2C_PAD_CTRL)
 286 /* I2C1 for PMIC */
 287 struct i2c_pads_info i2c_pad_info1 = {
 288         .sda = {
 289                 .i2c_mode = MX6_PAD_I2C1_SDA__I2C1_SDA | PC,
 290                 .gpio_mode = MX6_PAD_I2C1_SDA__GPIO_3_13 | PC,
 291                 .gp = IMX_GPIO_NR(3, 13),
 292         },
 293         .scl = {
 294                 .i2c_mode = MX6_PAD_I2C1_SCL__I2C1_SCL | PC,
 295                 .gpio_mode = MX6_PAD_I2C1_SCL__GPIO_3_12 | PC,
 296                 .gp = IMX_GPIO_NR(3, 12),
 297         },
 298 };
 299
 300 int power_init_board(void)
 301 {
 302         struct pmic *p;
 303
 304         p = pfuze_common_init(I2C_PMIC);
 305         if (!p)
 306                 return -ENODEV;
 307
 308         return pfuze_mode_init(p, APS_PFM);
 309 }
 310 #endif
 311
 312 #ifdef CONFIG_FEC_MXC
 313 int board_eth_init(bd_t *bis)
 314 {
 315         setup_iomux_fec();
 316
 317         return cpu_eth_init(bis);
 318 }
 319
 320 static int setup_fec(void)
 321 {
 322         struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
 323
 324         /* clear gpr1[14], gpr1[18:17] to select anatop clock */
 325         clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC_MASK, 0);
 326
 327         return enable_fec_anatop_clock(0, ENET_50MHZ);
 328 }
 329 #endif
 330
 331 #ifdef CONFIG_USB_EHCI_MX6
 332 #define USB_OTHERREGS_OFFSET    0x800
 333 #define UCTRL_PWR_POL           (1 << 9)
 334
 335 static iomux_v3_cfg_t const usb_otg_pads[] = {
 336         /* OTG1 */
 337         MX6_PAD_KEY_COL4__USB_USBOTG1_PWR | MUX_PAD_CTRL(NO_PAD_CTRL),
 338         MX6_PAD_EPDC_PWRCOM__ANATOP_USBOTG1_ID | MUX_PAD_CTRL(OTGID_PAD_CTRL),
 339         /* OTG2 */
 340         MX6_PAD_KEY_COL5__USB_USBOTG2_PWR | MUX_PAD_CTRL(NO_PAD_CTRL)
 341 };
 342
 343 static void setup_usb(void)
 344 {
 345         imx_iomux_v3_setup_multiple_pads(usb_otg_pads,
 346                                          ARRAY_SIZE(usb_otg_pads));
 347 }
 348
 349 int board_usb_phy_mode(int port)
 350 {
 351         if (port == 1)
 352                 return USB_INIT_HOST;
 353         else
 354                 return usb_phy_mode(port);
 355 }
 356
 357 int board_ehci_hcd_init(int port)
 358 {
 359         u32 *usbnc_usb_ctrl;
 360
 361         if (port > 1)
 362                 return -EINVAL;
 363
 364         usbnc_usb_ctrl = (u32 *)(USB_BASE_ADDR + USB_OTHERREGS_OFFSET +
 365                                  port * 4);
 366
 367         /* Set Power polarity */
 368         setbits_le32(usbnc_usb_ctrl, UCTRL_PWR_POL);
 369
 370         return 0;
 371 }
 372 #endif
 373
 374 int board_early_init_f(void)
 375 {
 376         setup_iomux_uart();
 377 #ifdef CONFIG_MXC_SPI
 378         setup_spi();
 379 #endif
 380         return 0;
 381 }
 382
 383 int board_init(void)
 384 {
 385         /* address of boot parameters */
 386         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 387
 388 #ifdef CONFIG_SYS_I2C_MXC
 389         setup_i2c(0, CONFIG_SYS_I2C_SPEED, 0x7f, &i2c_pad_info1);
 390 #endif
 391
 392 #ifdef  CONFIG_FEC_MXC
 393         setup_fec();
 394 #endif
 395
 396 #ifdef CONFIG_USB_EHCI_MX6
 397         setup_usb();
 398 #endif
 399
 400         return 0;
 401 }
 402
 403 int checkboard(void)
 404 {
 405         puts("Board: MX6SLEVK\n");
 406
 407         return 0;
 408 }
 409
 410 #ifdef CONFIG_SPL_BUILD
 411 #include <spl.h>
 412 #include <libfdt.h>
 413
 414 const struct mx6sl_iomux_ddr_regs mx6_ddr_ioregs = {
 415         .dram_sdqs0 = 0x00003030,
 416         .dram_sdqs1 = 0x00003030,
 417         .dram_sdqs2 = 0x00003030,
 418         .dram_sdqs3 = 0x00003030,
 419         .dram_dqm0 = 0x00000030,
 420         .dram_dqm1 = 0x00000030,
 421         .dram_dqm2 = 0x00000030,
 422         .dram_dqm3 = 0x00000030,
 423         .dram_cas  = 0x00000030,
 424         .dram_ras  = 0x00000030,
 425         .dram_sdclk_0 = 0x00000028,
 426         .dram_reset = 0x00000030,
 427         .dram_sdba2 = 0x00000000,
 428         .dram_odt0 = 0x00000008,
 429         .dram_odt1 = 0x00000008,
 430 };
 431
 432 const struct mx6sl_iomux_grp_regs mx6_grp_ioregs = {
 433         .grp_b0ds = 0x00000030,
 434         .grp_b1ds = 0x00000030,
 435         .grp_b2ds = 0x00000030,
 436         .grp_b3ds = 0x00000030,
 437         .grp_addds = 0x00000030,
 438         .grp_ctlds = 0x00000030,
 439         .grp_ddrmode_ctl = 0x00020000,
 440         .grp_ddrpke = 0x00000000,
 441         .grp_ddrmode = 0x00020000,
 442         .grp_ddr_type = 0x00080000,
 443 };
 444
 445 const struct mx6_mmdc_calibration mx6_mmcd_calib = {
 446         .p0_mpdgctrl0 =  0x20000000,
 447         .p0_mpdgctrl1 =  0x00000000,
 448         .p0_mprddlctl =  0x4241444a,
 449         .p0_mpwrdlctl =  0x3030312b,
 450         .mpzqlp2ctl = 0x1b4700c7,
 451 };
 452
 453 static struct mx6_lpddr2_cfg mem_ddr = {
 454         .mem_speed = 800,
 455         .density = 4,
 456         .width = 32,
 457         .banks = 8,
 458         .rowaddr = 14,
 459         .coladdr = 10,
 460         .trcd_lp = 2000,
 461         .trppb_lp = 2000,
 462         .trpab_lp = 2250,
 463         .trasmin = 4200,
 464 };
 465
 466 static void ccgr_init(void)
 467 {
 468         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 469
 470         writel(0xFFFFFFFF, &ccm->CCGR0);
 471         writel(0xFFFFFFFF, &ccm->CCGR1);
 472         writel(0xFFFFFFFF, &ccm->CCGR2);
 473         writel(0xFFFFFFFF, &ccm->CCGR3);
 474         writel(0xFFFFFFFF, &ccm->CCGR4);
 475         writel(0xFFFFFFFF, &ccm->CCGR5);
 476         writel(0xFFFFFFFF, &ccm->CCGR6);
 477
 478         writel(0x00260324, &ccm->cbcmr);
 479 }
 480
 481 static void spl_dram_init(void)
 482 {
 483         struct mx6_ddr_sysinfo sysinfo = {
 484                 .dsize = mem_ddr.width / 32,
 485                 .cs_density = 20,
 486                 .ncs = 2,
 487                 .cs1_mirror = 0,
 488                 .walat = 0,
 489                 .ralat = 2,
 490                 .mif3_mode = 3,
 491                 .bi_on = 1,
 492                 .rtt_wr = 0,        /* LPDDR2 does not need rtt_wr rtt_nom */
 493                 .rtt_nom = 0,
 494                 .sde_to_rst = 0,    /* LPDDR2 does not need this field */
 495                 .rst_to_cke = 0x10, /* JEDEC value for LPDDR2: 200us */
 496                 .ddr_type = DDR_TYPE_LPDDR2,
 497                 .refsel = 0,    /* Refresh cycles at 64KHz */
 498                 .refr = 3,      /* 4 refresh commands per refresh cycle */
 499         };
 500         mx6sl_dram_iocfg(32, &mx6_ddr_ioregs, &mx6_grp_ioregs);
 501         mx6_dram_cfg(&sysinfo, &mx6_mmcd_calib, &mem_ddr);
 502 }
 503
 504 void board_init_f(ulong dummy)
 505 {
 506         /* setup AIPS and disable watchdog */
 507         arch_cpu_init();
 508
 509         ccgr_init();
 510
 511         /* iomux and setup of i2c */
 512         board_early_init_f();
 513
 514         /* setup GP timer */
 515         timer_init();
 516
 517         /* UART clocks enabled and gd valid - init serial console */
 518         preloader_console_init();
 519
 520         /* DDR initialization */
 521         spl_dram_init();
 522
 523         /* Clear the BSS. */
 524         memset(__bss_start, 0, __bss_end - __bss_start);
 525
 526         /* load/boot image from boot device */
 527         board_init_r(NULL, 0);
 528 }
 529 #endif