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/smsc911x.h>
  25 #include <linux/mfd/mc13783.h>
  26 #include <linux/spi/spi.h>
  27 #include <linux/usb/otg.h>
  28 #include <linux/usb/ulpi.h>
  29 #include <linux/mtd/physmap.h>
  30 #include <linux/delay.h>
  31
  32 #include <asm/mach-types.h>
  33 #include <asm/mach/arch.h>
  34 #include <asm/mach/time.h>
  35 #include <asm/mach/map.h>
  36 #include <asm/page.h>
  37 #include <asm/setup.h>
  38
  39 #include <mach/hardware.h>
  40 #include <mach/common.h>
  41 #include <mach/board-mx31lite.h>
  42 #include <mach/iomux-mx3.h>
  43 #include <mach/irqs.h>
  44 #include <mach/ulpi.h>
  45
  46 #include "devices-imx31.h"
  47
  48 /*
  49  * This file contains the module-specific initialization routines.
  50  */
  51
  52 static unsigned int mx31lite_pins[] = {
  53         /* LAN9117 IRQ pin */
  54         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  55         /* SPI 1 */
  56         MX31_PIN_CSPI2_SCLK__SCLK,
  57         MX31_PIN_CSPI2_MOSI__MOSI,
  58         MX31_PIN_CSPI2_MISO__MISO,
  59         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  60         MX31_PIN_CSPI2_SS0__SS0,
  61         MX31_PIN_CSPI2_SS1__SS1,
  62         MX31_PIN_CSPI2_SS2__SS2,
  63 };
  64
  65 static const struct mxc_nand_platform_data
  66 mx31lite_nand_board_info __initconst  = {
  67         .width = 1,
  68         .hw_ecc = 1,
  69 };
  70
  71 static struct smsc911x_platform_config smsc911x_config = {
  72         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  73         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  74         .flags          = SMSC911X_USE_16BIT,
  75 };
  76
  77 static struct resource smsc911x_resources[] = {
  78         {
  79                 .start          = MX31_CS4_BASE_ADDR,
  80                 .end            = MX31_CS4_BASE_ADDR + 0x100,
  81                 .flags          = IORESOURCE_MEM,
  82         }, {
  83                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  84                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  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                   MC13XXX_USE_REGULATOR,
 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            = IOMUX_TO_IRQ(MX31_PIN_GPIO1_3),
 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 = 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 void __init mx31lite_init(void)
 230 {
 231         int ret;
 232
 233         switch (mx31lite_baseboard) {
 234         case MX31LITE_NOBOARD:
 235                 break;
 236         case MX31LITE_DB:
 237                 mx31lite_db_init();
 238                 break;
 239         default:
 240                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
 241                                 mx31lite_baseboard);
 242         }
 243
 244         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 245                                       "mx31lite");
 246
 247         /* NOR and NAND flash */
 248         platform_device_register(&physmap_flash_device);
 249         imx31_add_mxc_nand(&mx31lite_nand_board_info);
 250
 251         imx31_add_spi_imx1(&spi1_pdata);
 252         spi_register_board_info(&mc13783_spi_dev, 1);
 253
 254         /* USB */
 255         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 256                         ULPI_OTG_DRVVBUS_EXT);
 257         if (usbh2_pdata.otg)
 258                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 259
 260         /* SMSC9117 IRQ pin */
 261         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 262         if (ret)
 263                 pr_warning("could not get LAN irq gpio\n");
 264         else {
 265                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 266                 platform_device_register(&smsc911x_device);
 267         }
 268 }
 269
 270 static void __init mx31lite_timer_init(void)
 271 {
 272         mx31_clocks_init(26000000);
 273 }
 274
 275 struct sys_timer mx31lite_timer = {
 276         .init   = mx31lite_timer_init,
 277 };
 278
 279 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 280         /* Maintainer: Freescale Semiconductor, Inc. */
 281         .boot_params = MX3x_PHYS_OFFSET + 0x100,
 282         .map_io = mx31lite_map_io,
 283         .init_early = imx31_init_early,
 284         .init_irq = mx31_init_irq,
 285         .timer = &mx31lite_timer,
 286         .init_machine = mx31lite_init,
 287 MACHINE_END