arch/arm/mach-mx3/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  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <linux/types.h>
  22 #include <linux/init.h>
  23 #include <linux/kernel.h>
  24 #include <linux/memory.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/gpio.h>
  27 #include <linux/smsc911x.h>
  28
  29 #include <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/time.h>
  33 #include <asm/mach/map.h>
  34 #include <mach/common.h>
  35 #include <asm/page.h>
  36 #include <asm/setup.h>
  37 #include <mach/board-mx31lite.h>
  38 #include <mach/imx-uart.h>
  39 #include <mach/iomux-mx3.h>
  40 #include <mach/irqs.h>
  41 #include <mach/mxc_nand.h>
  42 #include "devices.h"
  43
  44 /*
  45  * This file contains the board-specific initialization routines.
  46  */
  47
  48 static unsigned int mx31lite_pins[] = {
  49         /* UART1 */
  50         MX31_PIN_CTS1__CTS1,
  51         MX31_PIN_RTS1__RTS1,
  52         MX31_PIN_TXD1__TXD1,
  53         MX31_PIN_RXD1__RXD1,
  54         /* LAN9117 IRQ pin */
  55         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
  56 };
  57
  58 static struct imxuart_platform_data uart_pdata = {
  59         .flags = IMXUART_HAVE_RTSCTS,
  60 };
  61
  62 static struct mxc_nand_platform_data mx31lite_nand_board_info = {
  63         .width = 1,
  64         .hw_ecc = 1,
  65 };
  66
  67 static struct smsc911x_platform_config smsc911x_config = {
  68         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  69         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
  70         .flags          = SMSC911X_USE_16BIT,
  71 };
  72
  73 static struct resource smsc911x_resources[] = {
  74         [0] = {
  75                 .start          = CS4_BASE_ADDR,
  76                 .end            = CS4_BASE_ADDR + 0x100,
  77                 .flags          = IORESOURCE_MEM,
  78         },
  79         [1] = {
  80                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  81                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  82                 .flags          = IORESOURCE_IRQ,
  83         },
  84 };
  85
  86 static struct platform_device smsc911x_device = {
  87         .name           = "smsc911x",
  88         .id             = -1,
  89         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  90         .resource       = smsc911x_resources,
  91         .dev            = {
  92                 .platform_data = &smsc911x_config,
  93         },
  94 };
  95
  96 /*
  97  * This structure defines the MX31 memory map.
  98  */
  99 static struct map_desc mx31lite_io_desc[] __initdata = {
 100         {
 101                 .virtual = SPBA0_BASE_ADDR_VIRT,
 102                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
 103                 .length = SPBA0_SIZE,
 104                 .type = MT_DEVICE_NONSHARED
 105         }, {
 106                 .virtual = CS4_BASE_ADDR_VIRT,
 107                 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
 108                 .length = CS4_SIZE,
 109                 .type = MT_DEVICE
 110         }
 111 };
 112
 113 /*
 114  * Set up static virtual mappings.
 115  */
 116 void __init mx31lite_map_io(void)
 117 {
 118         mx31_map_io();
 119         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 120 }
 121
 122 /*
 123  * Board specific initialization.
 124  */
 125 static void __init mxc_board_init(void)
 126 {
 127         int ret;
 128
 129         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 130                                       "mx31lite");
 131
 132         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 133         mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);
 134
 135         /* SMSC9117 IRQ pin */
 136         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 137         if (ret)
 138                 pr_warning("could not get LAN irq gpio\n");
 139         else {
 140                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 141                 platform_device_register(&smsc911x_device);
 142         }
 143 }
 144
 145 static void __init mx31lite_timer_init(void)
 146 {
 147         mx31_clocks_init(26000000);
 148 }
 149
 150 struct sys_timer mx31lite_timer = {
 151         .init   = mx31lite_timer_init,
 152 };
 153
 154 /*
 155  * The following uses standard kernel macros defined in arch.h in order to
 156  * initialize __mach_desc_MX31LITE data structure.
 157  */
 158
 159 MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT")
 160         /* Maintainer: Freescale Semiconductor, Inc. */
 161         .phys_io        = AIPS1_BASE_ADDR,
 162         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 163         .boot_params    = PHYS_OFFSET + 0x100,
 164         .map_io         = mx31lite_map_io,
 165         .init_irq       = mxc_init_irq,
 166         .init_machine   = mxc_board_init,
 167         .timer          = &mx31lite_timer,
 168 MACHINE_END