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         {
  75                 .start          = CS4_BASE_ADDR,
  76                 .end            = CS4_BASE_ADDR + 0x100,
  77                 .flags          = IORESOURCE_MEM,
  78         }, {
  79                 .start          = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  80                 .end            = IOMUX_TO_IRQ(MX31_PIN_SFS6),
  81                 .flags          = IORESOURCE_IRQ,
  82         },
  83 };
  84
  85 static struct platform_device smsc911x_device = {
  86         .name           = "smsc911x",
  87         .id             = -1,
  88         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  89         .resource       = smsc911x_resources,
  90         .dev            = {
  91                 .platform_data = &smsc911x_config,
  92         },
  93 };
  94
  95 /*
  96  * This structure defines the MX31 memory map.
  97  */
  98 static struct map_desc mx31lite_io_desc[] __initdata = {
  99         {
 100                 .virtual = SPBA0_BASE_ADDR_VIRT,
 101                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
 102                 .length = SPBA0_SIZE,
 103                 .type = MT_DEVICE_NONSHARED
 104         }, {
 105                 .virtual = CS4_BASE_ADDR_VIRT,
 106                 .pfn = __phys_to_pfn(CS4_BASE_ADDR),
 107                 .length = CS4_SIZE,
 108                 .type = MT_DEVICE
 109         }
 110 };
 111
 112 /*
 113  * Set up static virtual mappings.
 114  */
 115 void __init mx31lite_map_io(void)
 116 {
 117         mx31_map_io();
 118         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
 119 }
 120
 121 /*
 122  * Board specific initialization.
 123  */
 124 static void __init mxc_board_init(void)
 125 {
 126         int ret;
 127
 128         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
 129                                       "mx31lite");
 130
 131         mxc_register_device(&mxc_uart_device0, &uart_pdata);
 132         mxc_register_device(&mxc_nand_device, &mx31lite_nand_board_info);
 133
 134         /* SMSC9117 IRQ pin */
 135         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
 136         if (ret)
 137                 pr_warning("could not get LAN irq gpio\n");
 138         else {
 139                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
 140                 platform_device_register(&smsc911x_device);
 141         }
 142 }
 143
 144 static void __init mx31lite_timer_init(void)
 145 {
 146         mx31_clocks_init(26000000);
 147 }
 148
 149 struct sys_timer mx31lite_timer = {
 150         .init   = mx31lite_timer_init,
 151 };
 152
 153 /*
 154  * The following uses standard kernel macros defined in arch.h in order to
 155  * initialize __mach_desc_MX31LITE data structure.
 156  */
 157
 158 MACHINE_START(MX31LITE, "LogicPD MX31 LITEKIT")
 159         /* Maintainer: Freescale Semiconductor, Inc. */
 160         .phys_io        = AIPS1_BASE_ADDR,
 161         .io_pg_offst    = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 162         .boot_params    = PHYS_OFFSET + 0x100,
 163         .map_io         = mx31lite_map_io,
 164         .init_irq       = mx31_init_irq,
 165         .init_machine   = mxc_board_init,
 166         .timer          = &mx31lite_timer,
 167 MACHINE_END