LXR uboot/board/freescale/mx28evk/mx28evk.c

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * Freescale MX28EVK board
   4 *
   5 * (C) Copyright 2011 Freescale Semiconductor, Inc.
   6 *
   7 * Author: Fabio Estevam <fabio.estevam@freescale.com>
   8 *
   9 * Based on m28evk.c:
  10 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
  11 * on behalf of DENX Software Engineering GmbH
  12 */
  13
  14#include <common.h>
  15#include <asm/gpio.h>
  16#include <asm/io.h>
  17#include <asm/arch/imx-regs.h>
  18#include <asm/arch/iomux-mx28.h>
  19#include <asm/arch/clock.h>
  20#include <asm/arch/sys_proto.h>
  21#include <linux/mii.h>
  22#include <miiphy.h>
  23#include <netdev.h>
  24#include <errno.h>
  25
  26DECLARE_GLOBAL_DATA_PTR;
  27
  28/*
  29 * Functions
  30 */
  31int board_early_init_f(void)
  32{
  33        /* IO0 clock at 480MHz */
  34        mxs_set_ioclk(MXC_IOCLK0, 480000);
  35        /* IO1 clock at 480MHz */
  36        mxs_set_ioclk(MXC_IOCLK1, 480000);
  37
  38        /* SSP0 clock at 96MHz */
  39        mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
  40        /* SSP2 clock at 160MHz */
  41        mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
  42
  43#ifdef  CONFIG_CMD_USB
  44        mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT);
  45        mxs_iomux_setup_pad(MX28_PAD_AUART2_RX__GPIO_3_8 |
  46                        MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL);
  47        gpio_direction_output(MX28_PAD_AUART2_RX__GPIO_3_8, 1);
  48#endif
  49
  50        /* Power on LCD */
  51        gpio_direction_output(MX28_PAD_LCD_RESET__GPIO_3_30, 1);
  52
  53        /* Set contrast to maximum */
  54        gpio_direction_output(MX28_PAD_PWM2__GPIO_3_18, 1);
  55
  56        return 0;
  57}
  58
  59int dram_init(void)
  60{
  61        return mxs_dram_init();
  62}
  63
  64int board_init(void)
  65{
  66        /* Adress of boot parameters */
  67        gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
  68
  69        return 0;
  70}
  71
  72#ifdef  CONFIG_CMD_MMC
  73static int mx28evk_mmc_wp(int id)
  74{
  75        if (id != 0) {
  76                printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
  77                return 1;
  78        }
  79
  80        return gpio_get_value(MX28_PAD_SSP1_SCK__GPIO_2_12);
  81}
  82
  83int board_mmc_init(bd_t *bis)
  84{
  85        /* Configure WP as input */
  86        gpio_direction_input(MX28_PAD_SSP1_SCK__GPIO_2_12);
  87
  88        /* Configure MMC0 Power Enable */
  89        gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
  90
  91        return mxsmmc_initialize(bis, 0, mx28evk_mmc_wp, NULL);
  92}
  93#endif
  94
  95#ifdef  CONFIG_CMD_NET
  96
  97int board_eth_init(bd_t *bis)
  98{
  99        struct mxs_clkctrl_regs *clkctrl_regs =
 100                (struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
 101        struct eth_device *dev;
 102        int ret;
 103
 104        ret = cpu_eth_init(bis);
 105        if (ret)
 106                return ret;
 107
 108        /* MX28EVK uses ENET_CLK PAD to drive FEC clock */
 109        writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
 110               &clkctrl_regs->hw_clkctrl_enet);
 111
 112        /* Power-on FECs */
 113        gpio_direction_output(MX28_PAD_SSP1_DATA3__GPIO_2_15, 0);
 114
 115        /* Reset FEC PHYs */
 116        gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
 117        udelay(200);
 118        gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
 119
 120        ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
 121        if (ret) {
 122                puts("FEC MXS: Unable to init FEC0\n");
 123                return ret;
 124        }
 125
 126        ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
 127        if (ret) {
 128                puts("FEC MXS: Unable to init FEC1\n");
 129                return ret;
 130        }
 131
 132        dev = eth_get_dev_by_name("FEC0");
 133        if (!dev) {
 134                puts("FEC MXS: Unable to get FEC0 device entry\n");
 135                return -EINVAL;
 136        }
 137
 138        dev = eth_get_dev_by_name("FEC1");
 139        if (!dev) {
 140                puts("FEC MXS: Unable to get FEC1 device entry\n");
 141                return -EINVAL;
 142        }
 143
 144        return ret;
 145}
 146
 147#endif
 148