board/freescale/mx6slevk/mx6slevk.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/iomux.h>
  11 #include <asm/arch/imx-regs.h>
  12 #include <asm/arch/mx6-pins.h>
  13 #include <asm/arch/sys_proto.h>
  14 #include <asm/gpio.h>
  15 #include <asm/imx-common/iomux-v3.h>
  16 #include <asm/io.h>
  17 #include <asm/sizes.h>
  18 #include <common.h>
  19 #include <fsl_esdhc.h>
  20 #include <mmc.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_22K_UP |                    \
  29         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  30         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  31
  32 int dram_init(void)
  33 {
  34         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
  35
  36         return 0;
  37 }
  38
  39 static iomux_v3_cfg_t const uart1_pads[] = {
  40         MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  41         MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  42 };
  43
  44 static iomux_v3_cfg_t const usdhc2_pads[] = {
  45         MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  46         MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  47         MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  48         MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  49         MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  50         MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  51 };
  52
  53 static void setup_iomux_uart(void)
  54 {
  55         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  56 }
  57
  58 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
  59         {USDHC2_BASE_ADDR},
  60 };
  61
  62 int board_mmc_getcd(struct mmc *mmc)
  63 {
  64         return 1;       /* Assume boot SD always present */
  65 }
  66
  67 int board_mmc_init(bd_t *bis)
  68 {
  69         imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
  70
  71         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
  72         return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
  73 }
  74
  75 int board_early_init_f(void)
  76 {
  77         setup_iomux_uart();
  78         return 0;
  79 }
  80
  81 int board_init(void)
  82 {
  83         /* address of boot parameters */
  84         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
  85
  86         return 0;
  87 }
  88
  89 u32 get_board_rev(void)
  90 {
  91         return get_cpu_rev();
  92 }
  93
  94 int checkboard(void)
  95 {
  96         puts("Board: MX6SLEVK\n");
  97
  98         return 0;
  99 }