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board-mx53_evk.c

/*
 * Copyright (C) 2010 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/fec.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/imx-uart.h>
#include <mach/iomux-mx53.h>

#define SMD_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)

#include "crm_regs.h"
#include "devices-imx53.h"

static iomux_v3_cfg_t mx53_evk_pads[] = {
      MX53_PAD_CSI0_D10__UART1_TXD,
      MX53_PAD_CSI0_D11__UART1_RXD,
      MX53_PAD_ATA_DIOW__UART1_TXD,
      MX53_PAD_ATA_DMACK__UART1_RXD,

      MX53_PAD_ATA_BUFFER_EN__UART2_RXD,
      MX53_PAD_ATA_DMARQ__UART2_TXD,
      MX53_PAD_ATA_DIOR__UART2_RTS,
      MX53_PAD_ATA_INTRQ__UART2_CTS,

      MX53_PAD_ATA_CS_0__UART3_TXD,
      MX53_PAD_ATA_CS_1__UART3_RXD,
      MX53_PAD_ATA_DA_1__UART3_CTS,
      MX53_PAD_ATA_DA_2__UART3_RTS,

      MX53_PAD_EIM_D16__CSPI1_SCLK,
      MX53_PAD_EIM_D17__CSPI1_MISO,
      MX53_PAD_EIM_D18__CSPI1_MOSI,

      /* ecspi chip select lines */
      MX53_PAD_EIM_EB2__GPIO_2_30,
      MX53_PAD_EIM_D19__GPIO_3_19,
};

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

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

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(SMD_FEC_PHY_RST, "fec-phy-reset");
      if (ret) {
            printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
            return;
      }
      gpio_direction_output(SMD_FEC_PHY_RST, 0);
      gpio_set_value(SMD_FEC_PHY_RST, 0);
      msleep(1);
      gpio_set_value(SMD_FEC_PHY_RST, 1);
}

static struct fec_platform_data mx53_evk_fec_pdata = {
      .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),
};

static void __init mx53_evk_board_init(void)
{
      mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
                              ARRAY_SIZE(mx53_evk_pads));
      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);
}

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_irq = mx53_init_irq,
      .init_machine = mx53_evk_board_init,
      .timer = &mx53_evk_timer,
MACHINE_END

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