arch/arm/mach-imx/mach-mx35_3ds.c

   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
  46 #define EXPIO_PARENT_INT        gpio_to_irq(IMX_GPIO_NR(1, 1))
  47
  48 static const struct imxuart_platform_data uart_pdata __initconst = {
  49         .flags = IMXUART_HAVE_RTSCTS,
  50 };
  51
  52 static struct physmap_flash_data mx35pdk_flash_data = {
  53         .width  = 2,
  54 };
  55
  56 static struct resource mx35pdk_flash_resource = {
  57         .start  = MX35_CS0_BASE_ADDR,
  58         .end    = MX35_CS0_BASE_ADDR + SZ_64M - 1,
  59         .flags  = IORESOURCE_MEM,
  60 };
  61
  62 static struct platform_device mx35pdk_flash = {
  63         .name   = "physmap-flash",
  64         .id     = 0,
  65         .dev    = {
  66                 .platform_data  = &mx35pdk_flash_data,
  67         },
  68         .resource = &mx35pdk_flash_resource,
  69         .num_resources = 1,
  70 };
  71
  72 static const struct mxc_nand_platform_data mx35pdk_nand_board_info __initconst = {
  73         .width = 1,
  74         .hw_ecc = 1,
  75         .flash_bbt = 1,
  76 };
  77
  78 static struct platform_device *devices[] __initdata = {
  79         &mx35pdk_flash,
  80 };
  81
  82 static iomux_v3_cfg_t mx35pdk_pads[] = {
  83         /* UART1 */
  84         MX35_PAD_CTS1__UART1_CTS,
  85         MX35_PAD_RTS1__UART1_RTS,
  86         MX35_PAD_TXD1__UART1_TXD_MUX,
  87         MX35_PAD_RXD1__UART1_RXD_MUX,
  88         /* FEC */
  89         MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
  90         MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
  91         MX35_PAD_FEC_RX_DV__FEC_RX_DV,
  92         MX35_PAD_FEC_COL__FEC_COL,
  93         MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
  94         MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
  95         MX35_PAD_FEC_TX_EN__FEC_TX_EN,
  96         MX35_PAD_FEC_MDC__FEC_MDC,
  97         MX35_PAD_FEC_MDIO__FEC_MDIO,
  98         MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
  99         MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
 100         MX35_PAD_FEC_CRS__FEC_CRS,
 101         MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
 102         MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
 103         MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
 104         MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
 105         MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
 106         MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
 107         /* USBOTG */
 108         MX35_PAD_USBOTG_PWR__USB_TOP_USBOTG_PWR,
 109         MX35_PAD_USBOTG_OC__USB_TOP_USBOTG_OC,
 110         /* USBH1 */
 111         MX35_PAD_I2C2_CLK__USB_TOP_USBH2_PWR,
 112         MX35_PAD_I2C2_DAT__USB_TOP_USBH2_OC,
 113         /* SDCARD */
 114         MX35_PAD_SD1_CMD__ESDHC1_CMD,
 115         MX35_PAD_SD1_CLK__ESDHC1_CLK,
 116         MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
 117         MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
 118         MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
 119         MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
 120         /* I2C1 */
 121         MX35_PAD_I2C1_CLK__I2C1_SCL,
 122         MX35_PAD_I2C1_DAT__I2C1_SDA,
 123 };
 124
 125 static int mx35_3ds_otg_init(struct platform_device *pdev)
 126 {
 127         return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERNAL_PHY);
 128 }
 129
 130 /* OTG config */
 131 static const struct fsl_usb2_platform_data usb_otg_pdata __initconst = {
 132         .operating_mode = FSL_USB2_DR_DEVICE,
 133         .phy_mode       = FSL_USB2_PHY_UTMI_WIDE,
 134         .workaround     = FLS_USB2_WORKAROUND_ENGCM09152,
 135 /*
 136  * ENGCM09152 also requires a hardware change.
 137  * Please check the MX35 Chip Errata document for details.
 138  */
 139 };
 140
 141 static struct mxc_usbh_platform_data otg_pdata __initdata = {
 142         .init   = mx35_3ds_otg_init,
 143         .portsc = MXC_EHCI_MODE_UTMI,
 144 };
 145
 146 static int mx35_3ds_usbh_init(struct platform_device *pdev)
 147 {
 148         return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_SINGLE_UNI |
 149                           MXC_EHCI_INTERNAL_PHY);
 150 }
 151
 152 /* USB HOST config */
 153 static const struct mxc_usbh_platform_data usb_host_pdata __initconst = {
 154         .init           = mx35_3ds_usbh_init,
 155         .portsc         = MXC_EHCI_MODE_SERIAL,
 156 };
 157
 158 static int otg_mode_host;
 159
 160 static int __init mx35_3ds_otg_mode(char *options)
 161 {
 162         if (!strcmp(options, "host"))
 163                 otg_mode_host = 1;
 164         else if (!strcmp(options, "device"))
 165                 otg_mode_host = 0;
 166         else
 167                 pr_info("otg_mode neither \"host\" nor \"device\". "
 168                         "Defaulting to device\n");
 169         return 0;
 170 }
 171 __setup("otg_mode=", mx35_3ds_otg_mode);
 172
 173 static const struct imxi2c_platform_data mx35_3ds_i2c0_data __initconst = {
 174         .bitrate = 100000,
 175 };
 176
 177 /*
 178  * Board specific initialization.
 179  */
 180 static void __init mx35_3ds_init(void)
 181 {
 182         imx35_soc_init();
 183
 184         mxc_iomux_v3_setup_multiple_pads(mx35pdk_pads, ARRAY_SIZE(mx35pdk_pads));
 185
 186         imx35_add_fec(NULL);
 187         imx35_add_imx2_wdt(NULL);
 188         platform_add_devices(devices, ARRAY_SIZE(devices));
 189
 190         imx35_add_imx_uart0(&uart_pdata);
 191
 192         if (otg_mode_host)
 193                 imx35_add_mxc_ehci_otg(&otg_pdata);
 194
 195         imx35_add_mxc_ehci_hs(&usb_host_pdata);
 196
 197         if (!otg_mode_host)
 198                 imx35_add_fsl_usb2_udc(&usb_otg_pdata);
 199
 200         imx35_add_mxc_nand(&mx35pdk_nand_board_info);
 201         imx35_add_sdhci_esdhc_imx(0, NULL);
 202
 203         if (mxc_expio_init(MX35_CS5_BASE_ADDR, EXPIO_PARENT_INT))
 204                 pr_warn("Init of the debugboard failed, all "
 205                                 "devices on the debugboard are unusable.\n");
 206         imx35_add_imx_i2c0(&mx35_3ds_i2c0_data);
 207 }
 208
 209 static void __init mx35pdk_timer_init(void)
 210 {
 211         mx35_clocks_init();
 212 }
 213
 214 struct sys_timer mx35pdk_timer = {
 215         .init   = mx35pdk_timer_init,
 216 };
 217
 218 MACHINE_START(MX35_3DS, "Freescale MX35PDK")
 219         /* Maintainer: Freescale Semiconductor, Inc */
 220         .atag_offset = 0x100,
 221         .map_io = mx35_map_io,
 222         .init_early = imx35_init_early,
 223         .init_irq = mx35_init_irq,
 224         .handle_irq = imx35_handle_irq,
 225         .timer = &mx35pdk_timer,
 226         .init_machine = mx35_3ds_init,
 227         .restart        = mxc_restart,
 228 MACHINE_END