board/ppcag/bg0900/bg0900.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * PPC-AG BG0900 board
   4  *
   5  * Copyright (C) 2013 Marek Vasut <marex@denx.de>
   6  */
   7
   8 #include <common.h>
   9 #include <asm/gpio.h>
  10 #include <asm/io.h>
  11 #include <asm/arch/imx-regs.h>
  12 #include <asm/arch/iomux-mx28.h>
  13 #include <asm/arch/clock.h>
  14 #include <asm/arch/sys_proto.h>
  15 #include <linux/mii.h>
  16 #include <miiphy.h>
  17 #include <netdev.h>
  18 #include <errno.h>
  19
  20 DECLARE_GLOBAL_DATA_PTR;
  21
  22 /*
  23  * Functions
  24  */
  25 int board_early_init_f(void)
  26 {
  27         /* IO0 clock at 480MHz */
  28         mxs_set_ioclk(MXC_IOCLK0, 480000);
  29         /* IO1 clock at 480MHz */
  30         mxs_set_ioclk(MXC_IOCLK1, 480000);
  31
  32         /* SSP2 clock at 160MHz */
  33         mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
  34
  35         return 0;
  36 }
  37
  38 int dram_init(void)
  39 {
  40         return mxs_dram_init();
  41 }
  42
  43 int board_init(void)
  44 {
  45         /* Adress of boot parameters */
  46         gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
  47
  48         return 0;
  49 }
  50
  51 #ifdef CONFIG_CMD_NET
  52 int board_eth_init(bd_t *bis)
  53 {
  54         struct mxs_clkctrl_regs *clkctrl_regs =
  55                 (struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
  56         struct eth_device *dev;
  57         int ret;
  58
  59         ret = cpu_eth_init(bis);
  60
  61         /* BG0900 uses ENET_CLK PAD to drive FEC clock */
  62         writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
  63                &clkctrl_regs->hw_clkctrl_enet);
  64
  65         /* Reset FEC PHYs */
  66         gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
  67         udelay(200);
  68         gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
  69
  70         ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
  71         if (ret) {
  72                 puts("FEC MXS: Unable to init FEC0\n");
  73                 return ret;
  74         }
  75
  76         dev = eth_get_dev_by_name("FEC0");
  77         if (!dev) {
  78                 puts("FEC MXS: Unable to get FEC0 device entry\n");
  79                 return -EINVAL;
  80         }
  81
  82         return ret;
  83 }
  84
  85 #endif