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
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 /*
  29  * Functions
  30  */
  31 int 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
  59 int dram_init(void)
  60 {
  61         return mxs_dram_init();
  62 }
  63
  64 int 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
  73 static 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
  83 int 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
  97 int 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