arch/arm/mach-imx/mach-mx31lite.c

   1 /*
   2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   5  *  Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
   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 #include <linux/types.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/memory.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/gpio.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/smsc911x.h>
  26 #include <linux/mfd/mc13783.h>
  27 #include <linux/spi/spi.h>
  28 #include <linux/usb/otg.h>
  29 #include <linux/usb/ulpi.h>
  30 #include <linux/mtd/physmap.h>
  31 #include <linux/delay.h>
  32 #include <linux/regulator/machine.h>
  33 #include <linux/regulator/fixed.h>
  34
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/time.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/page.h>
  40 #include <asm/setup.h>
  41
  42 #include "board-mx31lite.h"
  43 #include "common.h"
  44 #include "devices-imx31.h"
  45 #include "hardware.h"
  46 #include "iomux-mx3.h"
  47 #include "ulpi.h"
  48
  49 /*
  50  * This file contains the module-specific initialization routines.
  51  */
  52
  53 static unsigned int mx31lite_pins[] = {
  54         /* LAN9117 IRQ pin */
  55         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  56         /* SPI 1 */
  57         MX31_PIN_CSPI2_SCLK__SCLK,
  58         MX31_PIN_CSPI2_MOSI__MOSI,
  59         MX31_PIN_CSPI2_MISO__MISO,
  60         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  61         MX31_PIN_CSPI2_SS0__SS0,
  62         MX31_PIN_CSPI2_SS1__SS1,
  63         MX31_PIN_CSPI2_SS2__SS2,
  64 };
  65
  66 static const struct mxc_nand_platform_data
  67 mx31lite_nand_board_info __initconst  = {
  68         .width = 1,
  69         .hw_ecc = 1,
  70 };
  71
  72 static struct smsc911x_platform_config smsc911x_config = {
  73         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  74         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  75         .flags          = SMSC911X_USE_16BIT,
  76 };
  77
  78 static struct resource smsc911x_resources[] = {
  79         {
  80                 .start          = MX31_CS4_BASE_ADDR,
  81                 .end            = MX31_CS4_BASE_ADDR + 0x100,
  82                 .flags          = IORESOURCE_MEM,
  83         }, {
  84                 /* irq number is run-time assigned */
  85                 .flags          = IORESOURCE_IRQ,
  86         },
  87 };
  88
  89 static struct platform_device smsc911x_device = {
  90         .name           = "smsc911x",
  91         .id             = -1,
  92         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  93         .resource       = smsc911x_resources,
  94         .dev            = {
  95                 .platform_data = &smsc911x_config,
  96         },
  97 };
  98
  99 /*
 100  * SPI
 101  *
 102  * The MC13783 is the only hard-wired SPI device on the module.
 103  */
 104
 105 static int spi_internal_chipselect[] = {
 106         MXC_SPI_CS(0),
 107 };
 108
 109 static const struct spi_imx_master spi1_pdata __initconst = {
 110         .chipselect     = spi_internal_chipselect,
 111         .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
 112 };
 113
 114 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
 115         .flags = MC13XXX_USE_RTC,
 116 };
 117
 118 static struct spi_board_info mc13783_spi_dev __initdata = {
 119         .modalias       = "mc13783",
 120         .max_speed_hz   = 1000000,
 121         .bus_num        = 1,
 122         .chip_select    = 0,
 123         .platform_data  = &mc13783_pdata,
 124         /* irq number is run-time assigned */
 125 };
 126
 127 /*
 128  * USB
 129  */
 130
 131 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 132                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 133
 134 static int usbh2_init(struct platform_device *pdev)
 135 {
 136         int pins[] = {
 137                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
 138                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
 139                 MX31_PIN_USBH2_CLK__USBH2_CLK,
 140                 MX31_PIN_USBH2_DIR__USBH2_DIR,
 141                 MX31_PIN_USBH2_NXT__USBH2_NXT,
 142                 MX31_PIN_USBH2_STP__USBH2_STP,
 143         };
 144
 145         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
 146
 147         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 148         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 149         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 150         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 151         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 152         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 153         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
 154         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
 155         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
 156         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
 157         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
 158         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
 159
 160         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
 161
 162         /* chip select */
 163         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
 164                                 "USBH2_CS");
 165         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
 166         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
 167
 168         mdelay(10);
 169
 170         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 171 }
 172
 173 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 174         .init   = usbh2_init,
 175         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 176 };
 177
 178 /*
 179  * NOR flash
 180  */
 181
 182 static struct physmap_flash_data nor_flash_data = {
 183         .width  = 2,
 184 };
 185
 186 static struct resource nor_flash_resource = {
 187         .start  = 0xa0000000,
 188         .end    = 0xa1ffffff,
 189         .flags  = IORESOURCE_MEM,
 190 };
 191
 192 static struct platform_device physmap_flash_device = {
 193         .name   = "physmap-flash",
 194         .id     = 0,
 195         .dev    = {
 196                 .platform_data  = &nor_flash_data,
 197         },
 198         .resource = &nor_flash_resource,
 199         .num_resources = 1,
 200 };
 201
 202
 203
 204 /*
 205  * This structure defines the MX31 memory map.
 206  */
 207 static struct map_desc mx31lite_io_desc[] __initdata = {
 208         {
 209                 .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
 210                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 211                 .length = MX31_CS4_SIZE,
 212                 .type = MT_DEVICE
 213         }
 214 };
 215
 216 /*
 217  * Set up static virtual mappings.
 218  */
 219 void __init mx31lite_map_io(void)
 220 {
 221         mx31_map_io();
 222         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 223 }
 224
 225 static int mx31lite_baseboard;
 226 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
 227
 228 static struct regulator_consumer_supply dummy_supplies[] = {
 229         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 230         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 231 };
 232
 233 static void __init mx31lite_init(void)
 234 {
 235         int ret;
 236
 237         imx31_soc_init();
 238
 239         switch (mx31lite_baseboard) {
 240         case MX31LITE_NOBOARD:
 241                 break;
 242         case MX31LITE_DB:
 243                 mx31lite_db_init();
 244                 break;
 245         default:
 246                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
 247                                 mx31lite_baseboard);
 248         }
 249
 250         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 251                                       "mx31lite");
 252
 253         /* NOR and NAND flash */
 254         platform_device_register(&physmap_flash_device);
 255         imx31_add_mxc_nand(&mx31lite_nand_board_info);
 256
 257         imx31_add_spi_imx1(&spi1_pdata);
 258         mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 259         spi_register_board_info(&mc13783_spi_dev, 1);
 260
 261         /* USB */
 262         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 263                         ULPI_OTG_DRVVBUS_EXT);
 264         if (usbh2_pdata.otg)
 265                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 266
 267         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 268
 269         /* SMSC9117 IRQ pin */
 270         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 271         if (ret)
 272                 pr_warning("could not get LAN irq gpio\n");
 273         else {
 274                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 275                 smsc911x_resources[1].start =
 276                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 277                 smsc911x_resources[1].end =
 278                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 279                 platform_device_register(&smsc911x_device);
 280         }
 281 }
 282
 283 static void __init mx31lite_timer_init(void)
 284 {
 285         mx31_clocks_init(26000000);
 286 }
 287
 288 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 289         /* Maintainer: Freescale Semiconductor, Inc. */
 290         .atag_offset = 0x100,
 291         .map_io = mx31lite_map_io,
 292         .init_early = imx31_init_early,
 293         .init_irq = mx31_init_irq,
 294         .init_time      = mx31lite_timer_init,
 295         .init_machine = mx31lite_init,
 296         .restart        = mxc_restart,
 297 MACHINE_END