alistair23-linux/arch/arm/mach-imx/mach-mx53_evk.c

/*
 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
 * Copyright (C) 2010 Yong Shen. <Yong.Shen@linaro.org>
 */

/*
 * 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/init.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/spi/flash.h>
#include <linux/spi/spi.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <mach/iomux-mx53.h>

#define MX53_EVK_FEC_PHY_RST	IMX_GPIO_NR(7, 6)
#define EVK_ECSPI1_CS0		IMX_GPIO_NR(2, 30)
#define EVK_ECSPI1_CS1		IMX_GPIO_NR(3, 19)
#define MX53EVK_LED		IMX_GPIO_NR(7, 7)

#include "devices-imx53.h"

static iomux_v3_cfg_t mx53_evk_pads[] = {
	MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
	MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,

	MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
	MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,
	MX53_PAD_PATA_DIOR__UART2_RTS,
	MX53_PAD_PATA_INTRQ__UART2_CTS,

	MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
	MX53_PAD_PATA_CS_1__UART3_RXD_MUX,

	MX53_PAD_EIM_D16__ECSPI1_SCLK,
	MX53_PAD_EIM_D17__ECSPI1_MISO,
	MX53_PAD_EIM_D18__ECSPI1_MOSI,

	/* ecspi chip select lines */
	MX53_PAD_EIM_EB2__GPIO2_30,
	MX53_PAD_EIM_D19__GPIO3_19,
	/* LED */
	MX53_PAD_PATA_DA_1__GPIO7_7,
};

static const struct imxuart_platform_data mx53_evk_uart_pdata __initconst = {
	.flags = IMXUART_HAVE_RTSCTS,
};

static const struct gpio_led mx53evk_leds[] __initconst = {
	{
		.name			= "green",
		.default_trigger	= "heartbeat",
		.gpio			= MX53EVK_LED,
	},
};

static const struct gpio_led_platform_data mx53evk_leds_data __initconst = {
	.leds		= mx53evk_leds,
	.num_leds	= ARRAY_SIZE(mx53evk_leds),
};

static inline void mx53_evk_init_uart(void)
{
	imx53_add_imx_uart(0, NULL);
	imx53_add_imx_uart(1, &mx53_evk_uart_pdata);
	imx53_add_imx_uart(2, NULL);
}

static const struct imxi2c_platform_data mx53_evk_i2c_data __initconst = {
	.bitrate = 100000,
};

static inline void mx53_evk_fec_reset(void)
{
	int ret;

	/* reset FEC PHY */
	ret = gpio_request_one(MX53_EVK_FEC_PHY_RST, GPIOF_OUT_INIT_LOW,
							"fec-phy-reset");
	if (ret) {
		printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
		return;
	}
	msleep(1);
	gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
}

static const struct fec_platform_data mx53_evk_fec_pdata __initconst = {
	.phy = PHY_INTERFACE_MODE_RMII,
};

static struct spi_board_info mx53_evk_spi_board_info[] __initdata = {
	{
		.modalias = "mtd_dataflash",
		.max_speed_hz = 25000000,
		.bus_num = 0,
		.chip_select = 1,
		.mode = SPI_MODE_0,
		.platform_data = NULL,
	},
};

static int mx53_evk_spi_cs[] = {
	EVK_ECSPI1_CS0,
	EVK_ECSPI1_CS1,
};

static const struct spi_imx_master mx53_evk_spi_data __initconst = {
	.chipselect     = mx53_evk_spi_cs,
	.num_chipselect = ARRAY_SIZE(mx53_evk_spi_cs),
};

void __init imx53_evk_common_init(void)
{
	mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
					 ARRAY_SIZE(mx53_evk_pads));
}

static void __init mx53_evk_board_init(void)
{
	imx53_soc_init();
	imx53_evk_common_init();

	mx53_evk_init_uart();
	mx53_evk_fec_reset();
	imx53_add_fec(&mx53_evk_fec_pdata);

	imx53_add_imx_i2c(0, &mx53_evk_i2c_data);
	imx53_add_imx_i2c(1, &mx53_evk_i2c_data);

	imx53_add_sdhci_esdhc_imx(0, NULL);
	imx53_add_sdhci_esdhc_imx(1, NULL);

	spi_register_board_info(mx53_evk_spi_board_info,
		ARRAY_SIZE(mx53_evk_spi_board_info));
	imx53_add_ecspi(0, &mx53_evk_spi_data);
	imx53_add_imx2_wdt(0, NULL);
	gpio_led_register_device(-1, &mx53evk_leds_data);
}

static void __init mx53_evk_timer_init(void)
{
	mx53_clocks_init(32768, 24000000, 22579200, 0);
}

static struct sys_timer mx53_evk_timer = {
	.init	= mx53_evk_timer_init,
};

MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board")
	.map_io = mx53_map_io,
	.init_early = imx53_init_early,
	.init_irq = mx53_init_irq,
	.handle_irq = imx53_handle_irq,
	.timer = &mx53_evk_timer,
	.init_machine = mx53_evk_board_init,
	.restart	= mxc_restart,
MACHINE_END