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 <mach/hardware.h>
  43 #include <mach/common.h>
  44 #include <mach/board-mx31lite.h>
  45 #include <mach/iomux-mx3.h>
  46 #include <mach/irqs.h>
  47 #include <mach/ulpi.h>
  48
  49 #include "devices-imx31.h"
  50
  51 /*
  52  * This file contains the module-specific initialization routines.
  53  */
  54
  55 static unsigned int mx31lite_pins[] = {
  56         /* LAN9117 IRQ pin */
  57         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  58         /* SPI 1 */
  59         MX31_PIN_CSPI2_SCLK__SCLK,
  60         MX31_PIN_CSPI2_MOSI__MOSI,
  61         MX31_PIN_CSPI2_MISO__MISO,
  62         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  63         MX31_PIN_CSPI2_SS0__SS0,
  64         MX31_PIN_CSPI2_SS1__SS1,
  65         MX31_PIN_CSPI2_SS2__SS2,
  66 };
  67
  68 static const struct mxc_nand_platform_data
  69 mx31lite_nand_board_info __initconst  = {
  70         .width = 1,
  71         .hw_ecc = 1,
  72 };
  73
  74 static struct smsc911x_platform_config smsc911x_config = {
  75         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  76         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  77         .flags          = SMSC911X_USE_16BIT,
  78 };
  79
  80 static struct resource smsc911x_resources[] = {
  81         {
  82                 .start          = MX31_CS4_BASE_ADDR,
  83                 .end            = MX31_CS4_BASE_ADDR + 0x100,
  84                 .flags          = IORESOURCE_MEM,
  85         }, {
  86                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  87                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  88                 .flags          = IORESOURCE_IRQ,
  89         },
  90 };
  91
  92 static struct platform_device smsc911x_device = {
  93         .name           = "smsc911x",
  94         .id             = -1,
  95         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  96         .resource       = smsc911x_resources,
  97         .dev            = {
  98                 .platform_data = &smsc911x_config,
  99         },
 100 };
 101
 102 /*
 103  * SPI
 104  *
 105  * The MC13783 is the only hard-wired SPI device on the module.
 106  */
 107
 108 static int spi_internal_chipselect[] = {
 109         MXC_SPI_CS(0),
 110 };
 111
 112 static const struct spi_imx_master spi1_pdata __initconst = {
 113         .chipselect     = spi_internal_chipselect,
 114         .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
 115 };
 116
 117 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
 118         .flags = MC13XXX_USE_RTC,
 119 };
 120
 121 static struct spi_board_info mc13783_spi_dev __initdata = {
 122         .modalias       = "mc13783",
 123         .max_speed_hz   = 1000000,
 124         .bus_num        = 1,
 125         .chip_select    = 0,
 126         .platform_data  = &mc13783_pdata,
 127         .irq            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 128 };
 129
 130 /*
 131  * USB
 132  */
 133
 134 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 135                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 136
 137 static int usbh2_init(struct platform_device *pdev)
 138 {
 139         int pins[] = {
 140                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
 141                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
 142                 MX31_PIN_USBH2_CLK__USBH2_CLK,
 143                 MX31_PIN_USBH2_DIR__USBH2_DIR,
 144                 MX31_PIN_USBH2_NXT__USBH2_NXT,
 145                 MX31_PIN_USBH2_STP__USBH2_STP,
 146         };
 147
 148         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
 149
 150         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 151         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 152         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 153         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 154         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 155         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 156         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
 157         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
 158         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
 159         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
 160         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
 161         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
 162
 163         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
 164
 165         /* chip select */
 166         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
 167                                 "USBH2_CS");
 168         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
 169         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
 170
 171         mdelay(10);
 172
 173         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 174 }
 175
 176 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 177         .init   = usbh2_init,
 178         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 179 };
 180
 181 /*
 182  * NOR flash
 183  */
 184
 185 static struct physmap_flash_data nor_flash_data = {
 186         .width  = 2,
 187 };
 188
 189 static struct resource nor_flash_resource = {
 190         .start  = 0xa0000000,
 191         .end    = 0xa1ffffff,
 192         .flags  = IORESOURCE_MEM,
 193 };
 194
 195 static struct platform_device physmap_flash_device = {
 196         .name   = "physmap-flash",
 197         .id     = 0,
 198         .dev    = {
 199                 .platform_data  = &nor_flash_data,
 200         },
 201         .resource = &nor_flash_resource,
 202         .num_resources = 1,
 203 };
 204
 205
 206
 207 /*
 208  * This structure defines the MX31 memory map.
 209  */
 210 static struct map_desc mx31lite_io_desc[] __initdata = {
 211         {
 212                 .virtual = MX31_CS4_BASE_ADDR_VIRT,
 213                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 214                 .length = MX31_CS4_SIZE,
 215                 .type = MT_DEVICE
 216         }
 217 };
 218
 219 /*
 220  * Set up static virtual mappings.
 221  */
 222 void __init mx31lite_map_io(void)
 223 {
 224         mx31_map_io();
 225         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 226 }
 227
 228 static int mx31lite_baseboard;
 229 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
 230
 231 static struct regulator_consumer_supply dummy_supplies[] = {
 232         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 233         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 234 };
 235
 236 static void __init mx31lite_init(void)
 237 {
 238         int ret;
 239
 240         imx31_soc_init();
 241
 242         switch (mx31lite_baseboard) {
 243         case MX31LITE_NOBOARD:
 244                 break;
 245         case MX31LITE_DB:
 246                 mx31lite_db_init();
 247                 break;
 248         default:
 249                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
 250                                 mx31lite_baseboard);
 251         }
 252
 253         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 254                                       "mx31lite");
 255
 256         /* NOR and NAND flash */
 257         platform_device_register(&physmap_flash_device);
 258         imx31_add_mxc_nand(&mx31lite_nand_board_info);
 259
 260         imx31_add_spi_imx1(&spi1_pdata);
 261         spi_register_board_info(&mc13783_spi_dev, 1);
 262
 263         /* USB */
 264         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 265                         ULPI_OTG_DRVVBUS_EXT);
 266         if (usbh2_pdata.otg)
 267                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 268
 269         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 270
 271         /* SMSC9117 IRQ pin */
 272         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 273         if (ret)
 274                 pr_warning("could not get LAN irq gpio\n");
 275         else {
 276                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 277                 platform_device_register(&smsc911x_device);
 278         }
 279 }
 280
 281 static void __init mx31lite_timer_init(void)
 282 {
 283         mx31_clocks_init(26000000);
 284 }
 285
 286 struct sys_timer mx31lite_timer = {
 287         .init   = mx31lite_timer_init,
 288 };
 289
 290 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 291         /* Maintainer: Freescale Semiconductor, Inc. */
 292         .atag_offset = 0x100,
 293         .map_io = mx31lite_map_io,
 294         .init_early = imx31_init_early,
 295         .init_irq = mx31_init_irq,
 296         .handle_irq = imx31_handle_irq,
 297         .timer = &mx31lite_timer,
 298         .init_machine = mx31lite_init,
 299         .restart        = mxc_restart,
 300 MACHINE_END