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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Copyright (C) 2000 Deep Blue Solutions Ltd
   4  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
   5  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
   6  *  Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
   7  */
   8
   9 #include <linux/types.h>
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12 #include <linux/memory.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/gpio.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/smsc911x.h>
  17 #include <linux/mfd/mc13783.h>
  18 #include <linux/spi/spi.h>
  19 #include <linux/usb/otg.h>
  20 #include <linux/usb/ulpi.h>
  21 #include <linux/mtd/physmap.h>
  22 #include <linux/delay.h>
  23 #include <linux/regulator/machine.h>
  24 #include <linux/regulator/fixed.h>
  25
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/time.h>
  29 #include <asm/mach/map.h>
  30 #include <asm/page.h>
  31 #include <asm/setup.h>
  32
  33 #include "board-mx31lite.h"
  34 #include "common.h"
  35 #include "devices-imx31.h"
  36 #include "ehci.h"
  37 #include "hardware.h"
  38 #include "iomux-mx3.h"
  39 #include "ulpi.h"
  40
  41 /*
  42  * This file contains the module-specific initialization routines.
  43  */
  44
  45 static unsigned int mx31lite_pins[] = {
  46         /* UART1 */
  47         MX31_PIN_CTS1__CTS1,
  48         MX31_PIN_RTS1__RTS1,
  49         MX31_PIN_TXD1__TXD1,
  50         MX31_PIN_RXD1__RXD1,
  51         /* SPI 0 */
  52         MX31_PIN_CSPI1_SCLK__SCLK,
  53         MX31_PIN_CSPI1_MOSI__MOSI,
  54         MX31_PIN_CSPI1_MISO__MISO,
  55         MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
  56         MX31_PIN_CSPI1_SS0__SS0,
  57         MX31_PIN_CSPI1_SS1__SS1,
  58         MX31_PIN_CSPI1_SS2__SS2,
  59         /* LAN9117 IRQ pin */
  60         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  61         /* SPI 1 */
  62         MX31_PIN_CSPI2_SCLK__SCLK,
  63         MX31_PIN_CSPI2_MOSI__MOSI,
  64         MX31_PIN_CSPI2_MISO__MISO,
  65         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
  66         MX31_PIN_CSPI2_SS0__SS0,
  67         MX31_PIN_CSPI2_SS1__SS1,
  68         MX31_PIN_CSPI2_SS2__SS2,
  69 };
  70
  71 /* UART */
  72 static const struct imxuart_platform_data uart_pdata __initconst = {
  73         .flags = IMXUART_HAVE_RTSCTS,
  74 };
  75
  76 /* SPI */
  77 static const struct spi_imx_master spi0_pdata __initconst = {
  78         .num_chipselect = 3,
  79 };
  80
  81 static const struct mxc_nand_platform_data
  82 mx31lite_nand_board_info __initconst  = {
  83         .width = 1,
  84         .hw_ecc = 1,
  85 };
  86
  87 static struct smsc911x_platform_config smsc911x_config = {
  88         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  89         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  90         .flags          = SMSC911X_USE_16BIT,
  91 };
  92
  93 static struct resource smsc911x_resources[] = {
  94         {
  95                 .start          = MX31_CS4_BASE_ADDR,
  96                 .end            = MX31_CS4_BASE_ADDR + 0x100,
  97                 .flags          = IORESOURCE_MEM,
  98         }, {
  99                 /* irq number is run-time assigned */
 100                 .flags          = IORESOURCE_IRQ,
 101         },
 102 };
 103
 104 static struct platform_device smsc911x_device = {
 105         .name           = "smsc911x",
 106         .id             = -1,
 107         .num_resources  = ARRAY_SIZE(smsc911x_resources),
 108         .resource       = smsc911x_resources,
 109         .dev            = {
 110                 .platform_data = &smsc911x_config,
 111         },
 112 };
 113
 114 /*
 115  * SPI
 116  *
 117  * The MC13783 is the only hard-wired SPI device on the module.
 118  */
 119
 120 static const struct spi_imx_master spi1_pdata __initconst = {
 121         .num_chipselect = 1,
 122 };
 123
 124 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
 125         .flags = MC13XXX_USE_RTC,
 126 };
 127
 128 static struct spi_board_info mc13783_spi_dev __initdata = {
 129         .modalias       = "mc13783",
 130         .max_speed_hz   = 1000000,
 131         .bus_num        = 1,
 132         .chip_select    = 0,
 133         .platform_data  = &mc13783_pdata,
 134         /* irq number is run-time assigned */
 135 };
 136
 137 /*
 138  * USB
 139  */
 140
 141 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
 142                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
 143
 144 static int usbh2_init(struct platform_device *pdev)
 145 {
 146         int pins[] = {
 147                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
 148                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
 149                 MX31_PIN_USBH2_CLK__USBH2_CLK,
 150                 MX31_PIN_USBH2_DIR__USBH2_DIR,
 151                 MX31_PIN_USBH2_NXT__USBH2_NXT,
 152                 MX31_PIN_USBH2_STP__USBH2_STP,
 153         };
 154
 155         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
 156
 157         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
 158         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
 159         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
 160         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
 161         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
 162         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
 163         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
 164         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
 165         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
 166         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
 167         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
 168         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
 169
 170         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
 171
 172         /* chip select */
 173         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
 174                                 "USBH2_CS");
 175         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
 176         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
 177
 178         mdelay(10);
 179
 180         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
 181 }
 182
 183 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
 184         .init   = usbh2_init,
 185         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
 186 };
 187
 188 /*
 189  * NOR flash
 190  */
 191
 192 static struct physmap_flash_data nor_flash_data = {
 193         .width  = 2,
 194 };
 195
 196 static struct resource nor_flash_resource = {
 197         .start  = 0xa0000000,
 198         .end    = 0xa1ffffff,
 199         .flags  = IORESOURCE_MEM,
 200 };
 201
 202 static struct platform_device physmap_flash_device = {
 203         .name   = "physmap-flash",
 204         .id     = 0,
 205         .dev    = {
 206                 .platform_data  = &nor_flash_data,
 207         },
 208         .resource = &nor_flash_resource,
 209         .num_resources = 1,
 210 };
 211
 212 /*
 213  * This structure defines the MX31 memory map.
 214  */
 215 static struct map_desc mx31lite_io_desc[] __initdata = {
 216         {
 217                 .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
 218                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
 219                 .length = MX31_CS4_SIZE,
 220                 .type = MT_DEVICE
 221         }
 222 };
 223
 224 /*
 225  * Set up static virtual mappings.
 226  */
 227 static void __init mx31lite_map_io(void)
 228 {
 229         mx31_map_io();
 230         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 231 }
 232
 233 static int mx31lite_baseboard;
 234 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
 235
 236 static struct regulator_consumer_supply dummy_supplies[] = {
 237         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 238         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 239 };
 240
 241 static void __init mx31lite_init(void)
 242 {
 243         imx31_soc_init();
 244
 245         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 246                                       "mx31lite");
 247
 248         imx31_add_imx_uart0(&uart_pdata);
 249         imx31_add_spi_imx0(&spi0_pdata);
 250
 251         /* NOR and NAND flash */
 252         platform_device_register(&physmap_flash_device);
 253         imx31_add_mxc_nand(&mx31lite_nand_board_info);
 254
 255         imx31_add_spi_imx1(&spi1_pdata);
 256
 257         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 258 }
 259
 260 static void __init mx31lite_late(void)
 261 {
 262         int ret;
 263
 264         if (mx31lite_baseboard == MX31LITE_DB)
 265                 mx31lite_db_init();
 266
 267         mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
 268         spi_register_board_info(&mc13783_spi_dev, 1);
 269
 270         /* USB */
 271         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
 272                         ULPI_OTG_DRVVBUS_EXT);
 273         if (usbh2_pdata.otg)
 274                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
 275
 276         /* SMSC9117 IRQ pin */
 277         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 278         if (ret)
 279                 pr_warn("could not get LAN irq gpio\n");
 280         else {
 281                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 282                 smsc911x_resources[1].start =
 283                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 284                 smsc911x_resources[1].end =
 285                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 286                 platform_device_register(&smsc911x_device);
 287         }
 288 }
 289
 290 static void __init mx31lite_timer_init(void)
 291 {
 292         mx31_clocks_init(26000000);
 293 }
 294
 295 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
 296         /* Maintainer: Freescale Semiconductor, Inc. */
 297         .atag_offset = 0x100,
 298         .map_io = mx31lite_map_io,
 299         .init_early = imx31_init_early,
 300         .init_irq = mx31_init_irq,
 301         .init_time      = mx31lite_timer_init,
 302         .init_machine = mx31lite_init,
 303         .init_late      = mx31lite_late,
 304         .restart        = mxc_restart,
 305 MACHINE_END