LXR uboot/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
  27DECLARE_GLOBAL_DATA_PTR;
  28
  29/*
  30 * Functions
  31 */
  32int 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
  60int dram_init(void)
  61{
  62        return mxs_dram_init();
  63}
  64
  65int 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
  74static 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
  84int 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
  98int 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        if (ret)
 107                return ret;
 108
 109        /* MX28EVK uses ENET_CLK PAD to drive FEC clock */
 110        writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
 111               &clkctrl_regs->hw_clkctrl_enet);
 112
 113        /* Power-on FECs */
 114        gpio_direction_output(MX28_PAD_SSP1_DATA3__GPIO_2_15, 0);
 115
 116        /* Reset FEC PHYs */
 117        gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
 118        udelay(200);
 119        gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
 120
 121        ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
 122        if (ret) {
 123                puts("FEC MXS: Unable to init FEC0\n");
 124                return ret;
 125        }
 126
 127        ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
 128        if (ret) {
 129                puts("FEC MXS: Unable to init FEC1\n");
 130                return ret;
 131        }
 132
 133        dev = eth_get_dev_by_name("FEC0");
 134        if (!dev) {
 135                puts("FEC MXS: Unable to get FEC0 device entry\n");
 136                return -EINVAL;
 137        }
 138
 139        dev = eth_get_dev_by_name("FEC1");
 140        if (!dev) {
 141                puts("FEC MXS: Unable to get FEC1 device entry\n");
 142                return -EINVAL;
 143        }
 144
 145        return ret;
 146}
 147
 148#endif
 149