board/freescale/mx6slevk/mx6slevk.c

   1 /*
   2  * Copyright (C) 2013 Freescale Semiconductor, Inc.
   3  *
   4  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of
   9  * the License, or (at your option) any later version.
  10  */
  11
  12 #include <asm/arch/clock.h>
  13 #include <asm/arch/iomux.h>
  14 #include <asm/arch/imx-regs.h>
  15 #include <asm/arch/mx6-pins.h>
  16 #include <asm/arch/sys_proto.h>
  17 #include <asm/gpio.h>
  18 #include <asm/imx-common/iomux-v3.h>
  19 #include <asm/io.h>
  20 #include <asm/sizes.h>
  21 #include <common.h>
  22 #include <fsl_esdhc.h>
  23 #include <mmc.h>
  24
  25 DECLARE_GLOBAL_DATA_PTR;
  26
  27 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |                   \
  28         PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |                 \
  29         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  30
  31 #define USDHC_PAD_CTRL (PAD_CTL_PUS_22K_UP |                    \
  32         PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |                 \
  33         PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
  34
  35 int dram_init(void)
  36 {
  37         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
  38
  39         return 0;
  40 }
  41
  42 static iomux_v3_cfg_t const uart1_pads[] = {
  43         MX6_PAD_UART1_TXD__UART1_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  44         MX6_PAD_UART1_RXD__UART1_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
  45 };
  46
  47 static iomux_v3_cfg_t const usdhc2_pads[] = {
  48         MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  49         MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  50         MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  51         MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  52         MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  53         MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
  54 };
  55
  56 static void setup_iomux_uart(void)
  57 {
  58         imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
  59 }
  60
  61 static struct fsl_esdhc_cfg usdhc_cfg[1] = {
  62         {USDHC2_BASE_ADDR},
  63 };
  64
  65 int board_mmc_getcd(struct mmc *mmc)
  66 {
  67         return 1;       /* Assume boot SD always present */
  68 }
  69
  70 int board_mmc_init(bd_t *bis)
  71 {
  72         imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
  73
  74         usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
  75         return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
  76 }
  77
  78 int board_early_init_f(void)
  79 {
  80         setup_iomux_uart();
  81         return 0;
  82 }
  83
  84 int board_init(void)
  85 {
  86         /* address of boot parameters */
  87         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
  88
  89         return 0;
  90 }
  91
  92 u32 get_board_rev(void)
  93 {
  94         return get_cpu_rev();
  95 }
  96
  97 int checkboard(void)
  98 {
  99         puts("Board: MX6SLEVK\n");
 100
 101         return 0;
 102 }