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mach-mx35_3ds.c

/*
 * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
 * Copyright (C) 2009 Marc Kleine-Budde, Pengutronix
 *
 * Author: Fabio Estevam <fabio.estevam@freescale.com>
 *
 * 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.
 */

/*
 * This machine is known as:
 *  - i.MX35 3-Stack Development System
 *  - i.MX35 Platform Development Kit (i.MX35 PDK)
 */

#include <linux/types.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/memory.h>
#include <linux/gpio.h>
#include <linux/usb/otg.h>

#include <linux/mtd/physmap.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/mach/map.h>

#include <mach/hardware.h>
#include <mach/common.h>
#include <mach/iomux-mx35.h>
#include <mach/irqs.h>
#include <mach/3ds_debugboard.h>

#include "devices-imx35.h"
#include "devices.h"

#define EXPIO_PARENT_INT      (MXC_INTERNAL_IRQS + GPIO_PORTA + 1)

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

static struct physmap_flash_data mx35pdk_flash_data = {
      .width  = 2,
};

static struct resource mx35pdk_flash_resource = {
      .start      = MX35_CS0_BASE_ADDR,
      .end  = MX35_CS0_BASE_ADDR + SZ_64M - 1,
      .flags      = IORESOURCE_MEM,
};

static struct platform_device mx35pdk_flash = {
      .name = "physmap-flash",
      .id   = 0,
      .dev  = {
            .platform_data  = &mx35pdk_flash_data,
      },
      .resource = &mx35pdk_flash_resource,
      .num_resources = 1,
};

static const struct mxc_nand_platform_data mx35pdk_nand_board_info __initconst = {
      .width = 1,
      .hw_ecc = 1,
      .flash_bbt = 1,
};

static struct platform_device *devices[] __initdata = {
      &mx35pdk_flash,
};

static iomux_v3_cfg_t mx35pdk_pads[] = {
      /* UART1 */
      MX35_PAD_CTS1__UART1_CTS,
      MX35_PAD_RTS1__UART1_RTS,
      MX35_PAD_TXD1__UART1_TXD_MUX,
      MX35_PAD_RXD1__UART1_RXD_MUX,
      /* FEC */
      MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
      MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
      MX35_PAD_FEC_RX_DV__FEC_RX_DV,
      MX35_PAD_FEC_COL__FEC_COL,
      MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
      MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
      MX35_PAD_FEC_TX_EN__FEC_TX_EN,
      MX35_PAD_FEC_MDC__FEC_MDC,
      MX35_PAD_FEC_MDIO__FEC_MDIO,
      MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
      MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
      MX35_PAD_FEC_CRS__FEC_CRS,
      MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
      MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
      MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
      MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
      MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
      MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
      /* USBOTG */
      MX35_PAD_USBOTG_PWR__USB_TOP_USBOTG_PWR,
      MX35_PAD_USBOTG_OC__USB_TOP_USBOTG_OC,
      /* USBH1 */
      MX35_PAD_I2C2_CLK__USB_TOP_USBH2_PWR,
      MX35_PAD_I2C2_DAT__USB_TOP_USBH2_OC,
      /* SDCARD */
      MX35_PAD_SD1_CMD__ESDHC1_CMD,
      MX35_PAD_SD1_CLK__ESDHC1_CLK,
      MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
      MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
      MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
      MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
};

/* OTG config */
static const struct fsl_usb2_platform_data usb_otg_pdata __initconst = {
      .operating_mode   = FSL_USB2_DR_DEVICE,
      .phy_mode   = FSL_USB2_PHY_UTMI_WIDE,
};

static struct mxc_usbh_platform_data otg_pdata __initdata = {
      .portsc     = MXC_EHCI_MODE_UTMI,
      .flags      = MXC_EHCI_INTERNAL_PHY,
};

/* USB HOST config */
static const struct mxc_usbh_platform_data usb_host_pdata __initconst = {
      .portsc           = MXC_EHCI_MODE_SERIAL,
      .flags            = MXC_EHCI_INTERFACE_SINGLE_UNI |
                    MXC_EHCI_INTERNAL_PHY,
};

static int otg_mode_host;

static int __init mx35_3ds_otg_mode(char *options)
{
      if (!strcmp(options, "host"))
            otg_mode_host = 1;
      else if (!strcmp(options, "device"))
            otg_mode_host = 0;
      else
            pr_info("otg_mode neither \"host\" nor \"device\". "
                  "Defaulting to device\n");
      return 0;
}
__setup("otg_mode=", mx35_3ds_otg_mode);

/*
 * Board specific initialization.
 */
static void __init mxc_board_init(void)
{
      mxc_iomux_v3_setup_multiple_pads(mx35pdk_pads, ARRAY_SIZE(mx35pdk_pads));

      imx35_add_fec(NULL);
      imx35_add_imx2_wdt(NULL);
      platform_add_devices(devices, ARRAY_SIZE(devices));

      imx35_add_imx_uart0(&uart_pdata);

      if (otg_mode_host)
            imx35_add_mxc_ehci_otg(&otg_pdata);

      imx35_add_mxc_ehci_hs(&usb_host_pdata);

      if (!otg_mode_host)
            imx35_add_fsl_usb2_udc(&usb_otg_pdata);

      imx35_add_mxc_nand(&mx35pdk_nand_board_info);
      imx35_add_sdhci_esdhc_imx(0, NULL);

      if (mxc_expio_init(MX35_CS5_BASE_ADDR, EXPIO_PARENT_INT))
            pr_warn("Init of the debugboard failed, all "
                        "devices on the debugboard are unusable.\n");
}

static void __init mx35pdk_timer_init(void)
{
      mx35_clocks_init();
}

struct sys_timer mx35pdk_timer = {
      .init = mx35pdk_timer_init,
};

MACHINE_START(MX35_3DS, "Freescale MX35PDK")
      /* Maintainer: Freescale Semiconductor, Inc */
      .boot_params    = MX3x_PHYS_OFFSET + 0x100,
      .map_io         = mx35_map_io,
      .init_irq       = mx35_init_irq,
      .init_machine   = mxc_board_init,
      .timer          = &mx35pdk_timer,
MACHINE_END

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