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/*
* Freescale MX28EVK board
*
* (C) Copyright 2011 Freescale Semiconductor, Inc.
*
* Author: Fabio Estevam <fabio.estevam@freescale.com>
*
* Based on m28evk.c:
* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
* on behalf of DENX Software Engineering GmbH
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/iomux-mx28.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <linux/mii.h>
#include <miiphy.h>
#include <netdev.h>
#include <errno.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Functions
*/
int board_early_init_f(void)
{
/* IO0 clock at 480MHz */
mx28_set_ioclk(MXC_IOCLK0, 480000);
/* IO1 clock at 480MHz */
mx28_set_ioclk(MXC_IOCLK1, 480000);
/* SSP0 clock at 96MHz */
mx28_set_sspclk(MXC_SSPCLK0, 96000, 0);
/* SSP2 clock at 160MHz */
mx28_set_sspclk(MXC_SSPCLK2, 160000, 0);
#ifdef CONFIG_CMD_USB
mxs_iomux_setup_pad(MX28_PAD_SSP2_SS1__USB1_OVERCURRENT);
mxs_iomux_setup_pad(MX28_PAD_AUART2_RX__GPIO_3_8 |
MXS_PAD_4MA | MXS_PAD_3V3 | MXS_PAD_NOPULL);
gpio_direction_output(MX28_PAD_AUART2_RX__GPIO_3_8, 1);
#endif
return 0;
}
int dram_init(void)
{
return mxs_dram_init();
}
int board_init(void)
{
/* Adress of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
return 0;
}
#ifdef CONFIG_CMD_MMC
static int mx28evk_mmc_wp(int id)
{
if (id != 0) {
printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
return 1;
}
return gpio_get_value(MX28_PAD_SSP1_SCK__GPIO_2_12);
}
int board_mmc_init(bd_t *bis)
{
/* Configure WP as input */
gpio_direction_input(MX28_PAD_SSP1_SCK__GPIO_2_12);
/* Configure MMC0 Power Enable */
gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
return mxsmmc_initialize(bis, 0, mx28evk_mmc_wp);
}
#endif
#ifdef CONFIG_CMD_NET
#define MII_OPMODE_STRAP_OVERRIDE 0x16
#define MII_PHY_CTRL1 0x1e
#define MII_PHY_CTRL2 0x1f
int fecmxc_mii_postcall(int phy)
{
miiphy_write("FEC1", phy, MII_BMCR, 0x9000);
miiphy_write("FEC1", phy, MII_OPMODE_STRAP_OVERRIDE, 0x0202);
if (phy == 3)
miiphy_write("FEC1", 3, MII_PHY_CTRL2, 0x8180);
return 0;
}
int board_eth_init(bd_t *bis)
{
struct mxs_clkctrl_regs *clkctrl_regs =
(struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
struct eth_device *dev;
int ret;
ret = cpu_eth_init(bis);
/* MX28EVK uses ENET_CLK PAD to drive FEC clock */
writel(CLKCTRL_ENET_TIME_SEL_RMII_CLK | CLKCTRL_ENET_CLK_OUT_EN,
&clkctrl_regs->hw_clkctrl_enet);
/* Power-on FECs */
gpio_direction_output(MX28_PAD_SSP1_DATA3__GPIO_2_15, 0);
/* Reset FEC PHYs */
gpio_direction_output(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 0);
udelay(200);
gpio_set_value(MX28_PAD_ENET0_RX_CLK__GPIO_4_13, 1);
ret = fecmxc_initialize_multi(bis, 0, 0, MXS_ENET0_BASE);
if (ret) {
puts("FEC MXS: Unable to init FEC0\n");
return ret;
}
ret = fecmxc_initialize_multi(bis, 1, 3, MXS_ENET1_BASE);
if (ret) {
puts("FEC MXS: Unable to init FEC1\n");
return ret;
}
dev = eth_get_dev_by_name("FEC0");
if (!dev) {
puts("FEC MXS: Unable to get FEC0 device entry\n");
return -EINVAL;
}
ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
if (ret) {
puts("FEC MXS: Unable to register FEC0 mii postcall\n");
return ret;
}
dev = eth_get_dev_by_name("FEC1");
if (!dev) {
puts("FEC MXS: Unable to get FEC1 device entry\n");
return -EINVAL;
}
ret = fecmxc_register_mii_postcall(dev, fecmxc_mii_postcall);
if (ret) {
puts("FEC MXS: Unable to register FEC1 mii postcall\n");
return ret;
}
return ret;
}
#endif
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