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