linux/arch/arm/mach-mx3/mach-mx35_3ds.c
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   1/*
   2 * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
   3 * Copyright (C) 2009 Marc Kleine-Budde, Pengutronix
   4 *
   5 * Author: Fabio Estevam <fabio.estevam@freescale.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 */
  17
  18/*
  19 * This machine is known as:
  20 *  - i.MX35 3-Stack Development System
  21 *  - i.MX35 Platform Development Kit (i.MX35 PDK)
  22 */
  23
  24#include <linux/types.h>
  25#include <linux/init.h>
  26#include <linux/platform_device.h>
  27#include <linux/memory.h>
  28#include <linux/gpio.h>
  29#include <linux/usb/otg.h>
  30
  31#include <linux/mtd/physmap.h>
  32
  33#include <asm/mach-types.h>
  34#include <asm/mach/arch.h>
  35#include <asm/mach/time.h>
  36#include <asm/mach/map.h>
  37
  38#include <mach/hardware.h>
  39#include <mach/common.h>
  40#include <mach/iomux-mx35.h>
  41#include <mach/irqs.h>
  42#include <mach/3ds_debugboard.h>
  43
  44#include "devices-imx35.h"
  45#include "devices.h"
  46
  47#define EXPIO_PARENT_INT        (MXC_INTERNAL_IRQS + GPIO_PORTA + 1)
  48
  49static const struct imxuart_platform_data uart_pdata __initconst = {
  50        .flags = IMXUART_HAVE_RTSCTS,
  51};
  52
  53static struct physmap_flash_data mx35pdk_flash_data = {
  54        .width  = 2,
  55};
  56
  57static struct resource mx35pdk_flash_resource = {
  58        .start  = MX35_CS0_BASE_ADDR,
  59        .end    = MX35_CS0_BASE_ADDR + SZ_64M - 1,
  60        .flags  = IORESOURCE_MEM,
  61};
  62
  63static struct platform_device mx35pdk_flash = {
  64        .name   = "physmap-flash",
  65        .id     = 0,
  66        .dev    = {
  67                .platform_data  = &mx35pdk_flash_data,
  68        },
  69        .resource = &mx35pdk_flash_resource,
  70        .num_resources = 1,
  71};
  72
  73static const struct mxc_nand_platform_data mx35pdk_nand_board_info __initconst = {
  74        .width = 1,
  75        .hw_ecc = 1,
  76        .flash_bbt = 1,
  77};
  78
  79static struct platform_device *devices[] __initdata = {
  80        &mx35pdk_flash,
  81};
  82
  83static iomux_v3_cfg_t mx35pdk_pads[] = {
  84        /* UART1 */
  85        MX35_PAD_CTS1__UART1_CTS,
  86        MX35_PAD_RTS1__UART1_RTS,
  87        MX35_PAD_TXD1__UART1_TXD_MUX,
  88        MX35_PAD_RXD1__UART1_RXD_MUX,
  89        /* FEC */
  90        MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
  91        MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
  92        MX35_PAD_FEC_RX_DV__FEC_RX_DV,
  93        MX35_PAD_FEC_COL__FEC_COL,
  94        MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
  95        MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
  96        MX35_PAD_FEC_TX_EN__FEC_TX_EN,
  97        MX35_PAD_FEC_MDC__FEC_MDC,
  98        MX35_PAD_FEC_MDIO__FEC_MDIO,
  99        MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
 100        MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
 101        MX35_PAD_FEC_CRS__FEC_CRS,
 102        MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
 103        MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
 104        MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
 105        MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
 106        MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
 107        MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
 108        /* USBOTG */
 109        MX35_PAD_USBOTG_PWR__USB_TOP_USBOTG_PWR,
 110        MX35_PAD_USBOTG_OC__USB_TOP_USBOTG_OC,
 111        /* USBH1 */
 112        MX35_PAD_I2C2_CLK__USB_TOP_USBH2_PWR,
 113        MX35_PAD_I2C2_DAT__USB_TOP_USBH2_OC,
 114        /* SDCARD */
 115        MX35_PAD_SD1_CMD__ESDHC1_CMD,
 116        MX35_PAD_SD1_CLK__ESDHC1_CLK,
 117        MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
 118        MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
 119        MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
 120        MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
 121        /* I2C1 */
 122        MX35_PAD_I2C1_CLK__I2C1_SCL,
 123        MX35_PAD_I2C1_DAT__I2C1_SDA,
 124};
 125
 126static int mx35_3ds_otg_init(struct platform_device *pdev)
 127{
 128        return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERNAL_PHY);
 129}
 130
 131/* OTG config */
 132static const struct fsl_usb2_platform_data usb_otg_pdata __initconst = {
 133        .operating_mode = FSL_USB2_DR_DEVICE,
 134        .phy_mode       = FSL_USB2_PHY_UTMI_WIDE,
 135        .workaround     = FLS_USB2_WORKAROUND_ENGCM09152,
 136/*
 137 * ENGCM09152 also requires a hardware change.
 138 * Please check the MX35 Chip Errata document for details.
 139 */
 140};
 141
 142static struct mxc_usbh_platform_data otg_pdata __initdata = {
 143        .init   = mx35_3ds_otg_init,
 144        .portsc = MXC_EHCI_MODE_UTMI,
 145};
 146
 147static int mx35_3ds_usbh_init(struct platform_device *pdev)
 148{
 149        return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_SINGLE_UNI |
 150                          MXC_EHCI_INTERNAL_PHY);
 151}
 152
 153/* USB HOST config */
 154static const struct mxc_usbh_platform_data usb_host_pdata __initconst = {
 155        .init           = mx35_3ds_usbh_init,
 156        .portsc         = MXC_EHCI_MODE_SERIAL,
 157};
 158
 159static int otg_mode_host;
 160
 161static int __init mx35_3ds_otg_mode(char *options)
 162{
 163        if (!strcmp(options, "host"))
 164                otg_mode_host = 1;
 165        else if (!strcmp(options, "device"))
 166                otg_mode_host = 0;
 167        else
 168                pr_info("otg_mode neither \"host\" nor \"device\". "
 169                        "Defaulting to device\n");
 170        return 0;
 171}
 172__setup("otg_mode=", mx35_3ds_otg_mode);
 173
 174static const struct imxi2c_platform_data mx35_3ds_i2c0_data __initconst = {
 175        .bitrate = 100000,
 176};
 177
 178/*
 179 * Board specific initialization.
 180 */
 181static void __init mx35_3ds_init(void)
 182{
 183        mxc_iomux_v3_setup_multiple_pads(mx35pdk_pads, ARRAY_SIZE(mx35pdk_pads));
 184
 185        imx35_add_fec(NULL);
 186        imx35_add_imx2_wdt(NULL);
 187        platform_add_devices(devices, ARRAY_SIZE(devices));
 188
 189        imx35_add_imx_uart0(&uart_pdata);
 190
 191        if (otg_mode_host)
 192                imx35_add_mxc_ehci_otg(&otg_pdata);
 193
 194        imx35_add_mxc_ehci_hs(&usb_host_pdata);
 195
 196        if (!otg_mode_host)
 197                imx35_add_fsl_usb2_udc(&usb_otg_pdata);
 198
 199        imx35_add_mxc_nand(&mx35pdk_nand_board_info);
 200        imx35_add_sdhci_esdhc_imx(0, NULL);
 201
 202        if (mxc_expio_init(MX35_CS5_BASE_ADDR, EXPIO_PARENT_INT))
 203                pr_warn("Init of the debugboard failed, all "
 204                                "devices on the debugboard are unusable.\n");
 205        imx35_add_imx_i2c0(&mx35_3ds_i2c0_data);
 206}
 207
 208static void __init mx35pdk_timer_init(void)
 209{
 210        mx35_clocks_init();
 211}
 212
 213struct sys_timer mx35pdk_timer = {
 214        .init   = mx35pdk_timer_init,
 215};
 216
 217MACHINE_START(MX35_3DS, "Freescale MX35PDK")
 218        /* Maintainer: Freescale Semiconductor, Inc */
 219        .boot_params = MX3x_PHYS_OFFSET + 0x100,
 220        .map_io = mx35_map_io,
 221        .init_early = imx35_init_early,
 222        .init_irq = mx35_init_irq,
 223        .timer = &mx35pdk_timer,
 224        .init_machine = mx35_3ds_init,
 225MACHINE_END
 226