board/freescale/mx28evk/mx28evk.c

   1 /*
   2  * Freescale MX28EVK board
   3  *
   4  * (C) Copyright 2011 Freescale Semiconductor, Inc.
   5  *
   6  * Author: Fabio Estevam <fabio.estevam@freescale.com>
   7  *
   8  * Based on m28evk.c:
   9  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
  10  * on behalf of DENX Software Engineering GmbH
  11  *
  12  * SPDX-License-Identifier:     GPL-2.0+
  13  */
  14
  15 #include <common.h>
  16 #include <asm/gpio.h>
  17 #include <asm/io.h>
  18 #include <asm/arch/imx-regs.h>
  19 #include <asm/arch/iomux-mx28.h>
  20 #include <asm/arch/clock.h>
  21 #include <asm/arch/sys_proto.h>
  22 #include <linux/mii.h>
  23 #include <miiphy.h>
  24 #include <netdev.h>
  25 #include <errno.h>
  26
  27 DECLARE_GLOBAL_DATA_PTR;
  28
  29 /*
  30  * Functions
  31  */
  32 int board_early_init_f(void)
  33 {
  34         /* IO0 clock at 480MHz */
  35         mxs_set_ioclk(MXC_IOCLK0, 480000);
  36         /* IO1 clock at 480MHz */
  37         mxs_set_ioclk(MXC_IOCLK1, 480000);
  38
  39         /* SSP0 clock at 96MHz */
  40         mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
  41         /* SSP2 clock at 160MHz */
  42         mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
  43
  44 #ifdef  CONFIG_CMD_USB
  45         mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT);
  46         mxs_iomux_setup_pad(MX28_PAD_AUART2_RX__GPIO_3_8 |
  47                         MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL);
  48         gpio_direction_output(MX28_PAD_AUART2_RX__GPIO_3_8, 1);
  49 #endif
  50
  51         /* Power on LCD */
  52         gpio_direction_output(MX28_PAD_LCD_RESET__GPIO_3_30, 1);
  53
  54         /* Set contrast to maximum */
  55         gpio_direction_output(MX28_PAD_PWM2__GPIO_3_18, 1);
  56
  57         return 0;
  58 }
  59
  60 int dram_init(void)
  61 {
  62         return mxs_dram_init();
  63 }
  64
  65 int board_init(void)
  66 {
  67         /* Adress of boot parameters */
  68         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
  69
  70         return 0;
  71 }
  72
  73 #ifdef  CONFIG_CMD_MMC
  74 static int mx28evk_mmc_wp(int id)
  75 {
  76         if (id != 0) {
  77                 printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
  78                 return 1;
  79         }
  80
  81         return gpio_get_value(MX28_PAD_SSP1_SCK__GPIO_2_12);
  82 }
  83
  84 int board_mmc_init(bd_t *bis)
  85 {
  86         /* Configure WP as input */
  87         gpio_direction_input(MX28_PAD_SSP1_SCK__GPIO_2_12);
  88
  89         /* Configure MMC0 Power Enable */
  90         gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
  91
  92         return mxsmmc_initialize(bis, 0, mx28evk_mmc_wp, NULL);
  93 }
  94 #endif
  95
  96 #ifdef  CONFIG_CMD_NET
  97
  98 int board_eth_init(bd_t *bis)
  99 {
 100         struct mxs_clkctrl_regs *clkctrl_regs =
 101                 (struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
 102         struct eth_device *dev;
 103         int ret;
 104
 105         ret = cpu_eth_init(bis);
 106
 107         /* MX28EVK uses ENET_CLK PAD to drive FEC clock */
 108         writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
 109                                         &clkctrl_regs->hw_clkctrl_enet);
 110
 111         /* Power-on FECs */
 112         gpio_direction_output(MX28_PAD_SSP1_DATA3__GPIO_2_15, 0);
 113
 114         /* Reset FEC PHYs */
 115         gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
 116         udelay(200);
 117         gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
 118
 119         ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
 120         if (ret) {
 121                 puts("FEC MXS: Unable to init FEC0\n");
 122                 return ret;
 123         }
 124
 125         ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
 126         if (ret) {
 127                 puts("FEC MXS: Unable to init FEC1\n");
 128                 return ret;
 129         }
 130
 131         dev = eth_get_dev_by_name("FEC0");
 132         if (!dev) {
 133                 puts("FEC MXS: Unable to get FEC0 device entry\n");
 134                 return -EINVAL;
 135         }
 136
 137         dev = eth_get_dev_by_name("FEC1");
 138         if (!dev) {
 139                 puts("FEC MXS: Unable to get FEC1 device entry\n");
 140                 return -EINVAL;
 141         }
 142
 143         return ret;
 144 }
 145
 146 #endif