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         /* UART1 */
  56         MX31_PIN_CTS1__CTS1,
  57         MX31_PIN_RTS1__RTS1,
  58         MX31_PIN_TXD1__TXD1,
  59         MX31_PIN_RXD1__RXD1,
  60         /* SPI 0 */
  61         MX31_PIN_CSPI1_SCLK__SCLK,
  62         MX31_PIN_CSPI1_MOSI__MOSI,
  63         MX31_PIN_CSPI1_MISO__MISO,
  64         MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
  65         MX31_PIN_CSPI1_SS0__SS0,
  66         MX31_PIN_CSPI1_SS1__SS1,
  67         MX31_PIN_CSPI1_SS2__SS2,
  68         /* LAN9117 IRQ pin */
  69         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  70         /* SPI 1 */
  71         MX31_PIN_CSPI2_SCLK__SCLK,
  72         MX31_PIN_CSPI2_MOSI__MOSI,
  73         MX31_PIN_CSPI2_MISO__MISO,
  74         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  75         MX31_PIN_CSPI2_SS0__SS0,
  76         MX31_PIN_CSPI2_SS1__SS1,
  77         MX31_PIN_CSPI2_SS2__SS2,
  78 };
  79
  80 /* UART */
  81 static const struct imxuart_platform_data uart_pdata __initconst = {
  82         .flags = IMXUART_HAVE_RTSCTS,
  83 };
  84
  85 /* SPI */
  86 static const struct spi_imx_master spi0_pdata __initconst = {
  87         .num_chipselect = 3,
  88 };
  89
  90 static const struct mxc_nand_platform_data
  91 mx31lite_nand_board_info __initconst  = {
  92         .width = 1,
  93         .hw_ecc = 1,
  94 };
  95
  96 static struct smsc911x_platform_config smsc911x_config = {
  97         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  98         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  99         .flags          = SMSC911X_USE_16BIT,
 100 };
 101
 102 static struct resource smsc911x_resources[] = {
 103         {
 104                 .start          = MX31_CS4_BASE_ADDR,
 105                 .end            = MX31_CS4_BASE_ADDR + 0x100,
 106                 .flags          = IORESOURCE_MEM,
 107         }, {
 108                 /* irq number is run-time assigned */
 109                 .flags          = IORESOURCE_IRQ,
 110         },
 111 };
 112
 113 static struct platform_device smsc911x_device = {
 114         .name           = "smsc911x",
 115         .id             = -1,
 116         .num_resources  = ARRAY_SIZE(smsc911x_resources),
 117         .resource       = smsc911x_resources,
 118         .dev            = {
 119                 .platform_data = &smsc911x_config,
 120         },
 121 };
 122
 123 /*
 124  * SPI
 125  *
 126  * The MC13783 is the only hard-wired SPI device on the module.
 127  */
 128
 129 static const struct spi_imx_master spi1_pdata __initconst = {
 130         .num_chipselect = 1,
 131 };
 132
 133 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
 134         .flags = MC13XXX_USE_RTC,
 135 };
 136
 137 static struct spi_board_info mc13783_spi_dev __initdata = {
 138         .modalias       = "mc13783",
 139         .max_speed_hz   = 1000000,
 140         .bus_num        = 1,
 141         .chip_select    = 0,
 142         .platform_data  = &mc13783_pdata,
 143         /* irq number is run-time assigned */
 144 };
 145
 146 /*
 147  * USB
 148  */
 149
 150 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 151                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 152
 153 static int usbh2_init(struct platform_device *pdev)
 154 {
 155         int pins[] = {
 156                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
 157                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
 158                 MX31_PIN_USBH2_CLK__USBH2_CLK,
 159                 MX31_PIN_USBH2_DIR__USBH2_DIR,
 160                 MX31_PIN_USBH2_NXT__USBH2_NXT,
 161                 MX31_PIN_USBH2_STP__USBH2_STP,
 162         };
 163
 164         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
 165
 166         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 167         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 168         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 169         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 170         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 171         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 172         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
 173         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
 174         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
 175         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
 176         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
 177         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
 178
 179         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
 180
 181         /* chip select */
 182         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
 183                                 "USBH2_CS");
 184         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
 185         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
 186
 187         mdelay(10);
 188
 189         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 190 }
 191
 192 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 193         .init   = usbh2_init,
 194         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 195 };
 196
 197 /*
 198  * NOR flash
 199  */
 200
 201 static struct physmap_flash_data nor_flash_data = {
 202         .width  = 2,
 203 };
 204
 205 static struct resource nor_flash_resource = {
 206         .start  = 0xa0000000,
 207         .end    = 0xa1ffffff,
 208         .flags  = IORESOURCE_MEM,
 209 };
 210
 211 static struct platform_device physmap_flash_device = {
 212         .name   = "physmap-flash",
 213         .id     = 0,
 214         .dev    = {
 215                 .platform_data  = &nor_flash_data,
 216         },
 217         .resource = &nor_flash_resource,
 218         .num_resources = 1,
 219 };
 220
 221 /*
 222  * This structure defines the MX31 memory map.
 223  */
 224 static struct map_desc mx31lite_io_desc[] __initdata = {
 225         {
 226                 .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
 227                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 228                 .length = MX31_CS4_SIZE,
 229                 .type = MT_DEVICE
 230         }
 231 };
 232
 233 /*
 234  * Set up static virtual mappings.
 235  */
 236 static void __init mx31lite_map_io(void)
 237 {
 238         mx31_map_io();
 239         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 240 }
 241
 242 static int mx31lite_baseboard;
 243 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
 244
 245 static struct regulator_consumer_supply dummy_supplies[] = {
 246         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 247         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 248 };
 249
 250 static void __init mx31lite_init(void)
 251 {
 252         imx31_soc_init();
 253
 254         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 255                                       "mx31lite");
 256
 257         imx31_add_imx_uart0(&uart_pdata);
 258         imx31_add_spi_imx0(&spi0_pdata);
 259
 260         /* NOR and NAND flash */
 261         platform_device_register(&physmap_flash_device);
 262         imx31_add_mxc_nand(&mx31lite_nand_board_info);
 263
 264         imx31_add_spi_imx1(&spi1_pdata);
 265
 266         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 267 }
 268
 269 static void __init mx31lite_late(void)
 270 {
 271         int ret;
 272
 273         if (mx31lite_baseboard == MX31LITE_DB)
 274                 mx31lite_db_init();
 275
 276         mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 277         spi_register_board_info(&mc13783_spi_dev, 1);
 278
 279         /* USB */
 280         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 281                         ULPI_OTG_DRVVBUS_EXT);
 282         if (usbh2_pdata.otg)
 283                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 284
 285         /* SMSC9117 IRQ pin */
 286         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 287         if (ret)
 288                 pr_warn("could not get LAN irq gpio\n");
 289         else {
 290                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 291                 smsc911x_resources[1].start =
 292                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 293                 smsc911x_resources[1].end =
 294                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 295                 platform_device_register(&smsc911x_device);
 296         }
 297 }
 298
 299 static void __init mx31lite_timer_init(void)
 300 {
 301         mx31_clocks_init(26000000);
 302 }
 303
 304 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 305         /* Maintainer: Freescale Semiconductor, Inc. */
 306         .atag_offset = 0x100,
 307         .map_io = mx31lite_map_io,
 308         .init_early = imx31_init_early,
 309         .init_irq = mx31_init_irq,
 310         .init_time      = mx31lite_timer_init,
 311         .init_machine = mx31lite_init,
 312         .init_late      = mx31lite_late,
 313         .restart        = mxc_restart,
 314 MACHINE_END