board/udoo/udoo.c

   1 /*
   2  * Copyright (C) 2013 Freescale Semiconductor, Inc.
   3  *
   4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <asm/arch/clock.h>
  10 #include <asm/arch/imx-regs.h>
  11 #include <asm/arch/iomux.h>
  12 #include <asm/arch/mx6-pins.h>
  13 #include <asm/errno.h>
  14 #include <asm/gpio.h>
  15 #include <asm/imx-common/iomux-v3.h>
  16 #include <mmc.h>
  17 #include <fsl_esdhc.h>
  18 #include <asm/arch/crm_regs.h>
  19 #include <asm/io.h>
  20 #include <asm/arch/sys_proto.h>
  21
  22 DECLARE_GLOBAL_DATA_PTR;
  23
  24 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  25         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  26         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  27
  28 #define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |                    \
  29         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  30         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  31
  32 #define WDT_EN          IMX_GPIO_NR(5, 4)
  33 #define WDT_TRG         IMX_GPIO_NR(3, 19)
  34
  35 int dram_init(void)
  36 {
  37         gd->ram_size = (phys_size_t)CONFIG_DDR_MB * 1024 * 1024;
  38
  39         return 0;
  40 }
  41
  42 static iomux_v3_cfg_t const uart2_pads[] = {
  43         MX6_PAD_EIM_D26__UART2_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  44         MX6_PAD_EIM_D27__UART2_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  45 };
  46
  47 static iomux_v3_cfg_t const usdhc3_pads[] = {
  48         MX6_PAD_SD3_CLK__USDHC3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  49         MX6_PAD_SD3_CMD__USDHC3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  50         MX6_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  51         MX6_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  52         MX6_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  53         MX6_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  54 };
  55
  56 static iomux_v3_cfg_t const wdog_pads[] = {
  57         MX6_PAD_EIM_A24__GPIO_5_4 | MUX_PAD_CTRL(NO_PAD_CTRL),
  58         MX6_PAD_EIM_D19__GPIO_3_19,
  59 };
  60
  61 static void setup_iomux_uart(void)
  62 {
  63         imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
  64 }
  65
  66 static void setup_iomux_wdog(void)
  67 {
  68         imx_iomux_v3_setup_multiple_pads(wdog_pads, ARRAY_SIZE(wdog_pads));
  69         gpio_direction_output(WDT_TRG, 0);
  70         gpio_direction_output(WDT_EN, 1);
  71 }
  72
  73 static struct fsl_esdhc_cfg usdhc_cfg = { USDHC3_BASE_ADDR };
  74
  75 int board_mmc_getcd(struct mmc *mmc)
  76 {
  77         return 1; /* Always present */
  78 }
  79
  80 int board_mmc_init(bd_t *bis)
  81 {
  82         imx_iomux_v3_setup_multiple_pads(usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
  83         usdhc_cfg.sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK);
  84         usdhc_cfg.max_bus_width = 4;
  85
  86         return fsl_esdhc_initialize(bis, &usdhc_cfg);
  87 }
  88
  89 int board_early_init_f(void)
  90 {
  91         setup_iomux_wdog();
  92         setup_iomux_uart();
  93
  94         return 0;
  95 }
  96
  97 int board_init(void)
  98 {
  99         /* address of boot parameters */
 100         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
 101
 102         return 0;
 103 }
 104
 105 int checkboard(void)
 106 {
 107         puts("Board: Udoo\n");
 108
 109         return 0;
 110 }