linux-vybrid_public/arch/arm/mach-mx25/mx25pdk.c

/*
 * Copyright 2009 Sascha Hauer, <kernel@pengutronix.de>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#include <linux/types.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/clk.h>
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/fec.h>
#include <linux/platform_device.h>

#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/memory.h>
#include <asm/mach/map.h>
#include <mach/common.h>
#include <mach/imx-uart.h>
#include <mach/mx25.h>
#include <mach/mxc_nand.h>
#include "devices.h"
#include <mach/iomux.h>

static struct imxuart_platform_data uart_pdata = {
	.flags = IMXUART_HAVE_RTSCTS,
};

static struct pad_desc mx25pdk_pads[] = {
	MX25_PAD_FEC_MDC__FEC_MDC,
	MX25_PAD_FEC_MDIO__FEC_MDIO,
	MX25_PAD_FEC_TDATA0__FEC_TDATA0,
	MX25_PAD_FEC_TDATA1__FEC_TDATA1,
	MX25_PAD_FEC_TX_EN__FEC_TX_EN,
	MX25_PAD_FEC_RDATA0__FEC_RDATA0,
	MX25_PAD_FEC_RDATA1__FEC_RDATA1,
	MX25_PAD_FEC_RX_DV__FEC_RX_DV,
	MX25_PAD_FEC_TX_CLK__FEC_TX_CLK,
	MX25_PAD_A17__GPIO_2_3, /* FEC_EN, GPIO 35 */
	MX25_PAD_D12__GPIO_4_8, /* FEC_RESET_B, GPIO 104 */
};

static struct fec_platform_data mx25_fec_pdata = {
        .phy    = PHY_INTERFACE_MODE_RMII,
};

#define FEC_ENABLE_GPIO		35
#define FEC_RESET_B_GPIO	104

static void __init mx25pdk_fec_reset(void)
{
	gpio_request(FEC_ENABLE_GPIO, "FEC PHY enable");
	gpio_request(FEC_RESET_B_GPIO, "FEC PHY reset");

	gpio_direction_output(FEC_ENABLE_GPIO, 0);  /* drop PHY power */
	gpio_direction_output(FEC_RESET_B_GPIO, 0); /* assert reset */
	udelay(2);

	/* turn on PHY power and lift reset */
	gpio_set_value(FEC_ENABLE_GPIO, 1);
	gpio_set_value(FEC_RESET_B_GPIO, 1);
}

static void __init mx25pdk_init(void)
{
	mxc_iomux_v3_setup_multiple_pads(mx25pdk_pads,
			ARRAY_SIZE(mx25pdk_pads));

	mxc_register_device(&mxc_uart_device0, &uart_pdata);
	mxc_register_device(&mxc_usbh2, NULL);

	mx25pdk_fec_reset();
	mxc_register_device(&mx25_fec_device, &mx25_fec_pdata);
}

static void __init mx25pdk_timer_init(void)
{
	mx25_clocks_init(26000000);
}

static struct sys_timer mx25pdk_timer = {
	.init   = mx25pdk_timer_init,
};

MACHINE_START(MX25_3DS, "Freescale MX25PDK (3DS)")
	/* Maintainer: Freescale Semiconductor, Inc. */
	.phys_io	= MX25_AIPS1_BASE_ADDR,
	.io_pg_offst	= ((MX25_AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
	.boot_params    = PHYS_OFFSET + 0x100,
	.map_io         = mx25_map_io,
	.init_irq       = mx25_init_irq,
	.init_machine   = mx25pdk_init,
	.timer          = &mx25pdk_timer,
MACHINE_END