arch/sh/boards/board-apsh4a3a.c

   1 /*
   2  * ALPHAPROJECT AP-SH4A-3A Support.
   3  *
   4  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
   5  * Copyright (C) 2008  Yoshihiro Shimoda
   6  * Copyright (C) 2009  Paul Mundt
   7  *
   8  * This file is subject to the terms and conditions of the GNU General Public
   9  * License.  See the file "COPYING" in the main directory of this archive
  10  * for more details.
  11  */
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/io.h>
  15 #include <linux/mtd/physmap.h>
  16 #include <linux/smsc911x.h>
  17 #include <linux/irq.h>
  18 #include <linux/clk.h>
  19 #include <asm/machvec.h>
  20 #include <asm/sizes.h>
  21 #include <asm/clock.h>
  22
  23 static struct mtd_partition nor_flash_partitions[] = {
  24         {
  25                 .name           = "loader",
  26                 .offset         = 0x00000000,
  27                 .size           = 512 * 1024,
  28         },
  29         {
  30                 .name           = "bootenv",
  31                 .offset         = MTDPART_OFS_APPEND,
  32                 .size           = 512 * 1024,
  33         },
  34         {
  35                 .name           = "kernel",
  36                 .offset         = MTDPART_OFS_APPEND,
  37                 .size           = 4 * 1024 * 1024,
  38         },
  39         {
  40                 .name           = "data",
  41                 .offset         = MTDPART_OFS_APPEND,
  42                 .size           = MTDPART_SIZ_FULL,
  43         },
  44 };
  45
  46 static struct physmap_flash_data nor_flash_data = {
  47         .width          = 4,
  48         .parts          = nor_flash_partitions,
  49         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
  50 };
  51
  52 static struct resource nor_flash_resources[] = {
  53         [0]     = {
  54                 .start  = 0x00000000,
  55                 .end    = 0x01000000 - 1,
  56                 .flags  = IORESOURCE_MEM,
  57         }
  58 };
  59
  60 static struct platform_device nor_flash_device = {
  61         .name           = "physmap-flash",
  62         .dev            = {
  63                 .platform_data  = &nor_flash_data,
  64         },
  65         .num_resources  = ARRAY_SIZE(nor_flash_resources),
  66         .resource       = nor_flash_resources,
  67 };
  68
  69 static struct resource smsc911x_resources[] = {
  70         [0] = {
  71                 .name           = "smsc911x-memory",
  72                 .start          = 0xA4000000,
  73                 .end            = 0xA4000000 + SZ_256 - 1,
  74                 .flags          = IORESOURCE_MEM,
  75         },
  76         [1] = {
  77                 .name           = "smsc911x-irq",
  78                 .start          = evt2irq(0x200),
  79                 .end            = evt2irq(0x200),
  80                 .flags          = IORESOURCE_IRQ,
  81         },
  82 };
  83
  84 static struct smsc911x_platform_config smsc911x_config = {
  85         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  86         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  87         .flags          = SMSC911X_USE_16BIT,
  88         .phy_interface  = PHY_INTERFACE_MODE_MII,
  89 };
  90
  91 static struct platform_device smsc911x_device = {
  92         .name           = "smsc911x",
  93         .id             = -1,
  94         .num_resources  = ARRAY_SIZE(smsc911x_resources),
  95         .resource       = smsc911x_resources,
  96         .dev = {
  97                 .platform_data = &smsc911x_config,
  98         },
  99 };
 100
 101 static struct platform_device *apsh4a3a_devices[] __initdata = {
 102         &nor_flash_device,
 103         &smsc911x_device,
 104 };
 105
 106 static int __init apsh4a3a_devices_setup(void)
 107 {
 108         return platform_add_devices(apsh4a3a_devices,
 109                                     ARRAY_SIZE(apsh4a3a_devices));
 110 }
 111 device_initcall(apsh4a3a_devices_setup);
 112
 113 static int apsh4a3a_clk_init(void)
 114 {
 115         struct clk *clk;
 116         int ret;
 117
 118         clk = clk_get(NULL, "extal");
 119         if (!clk || IS_ERR(clk))
 120                 return PTR_ERR(clk);
 121         ret = clk_set_rate(clk, 33333000);
 122         clk_put(clk);
 123
 124         return ret;
 125 }
 126
 127 /* Initialize the board */
 128 static void __init apsh4a3a_setup(char **cmdline_p)
 129 {
 130         printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n");
 131 }
 132
 133 static void __init apsh4a3a_init_irq(void)
 134 {
 135         plat_irq_setup_pins(IRQ_MODE_IRQ7654);
 136 }
 137
 138 /* Return the board specific boot mode pin configuration */
 139 static int apsh4a3a_mode_pins(void)
 140 {
 141         int value = 0;
 142
 143         /* These are the factory default settings of SW1 and SW2.
 144          * If you change these dip switches then you will need to
 145          * adjust the values below as well.
 146          */
 147         value &= ~MODE_PIN0;  /* Clock Mode 16 */
 148         value &= ~MODE_PIN1;
 149         value &= ~MODE_PIN2;
 150         value &= ~MODE_PIN3;
 151         value |=  MODE_PIN4;
 152         value &= ~MODE_PIN5;  /* 16-bit Area0 bus width */
 153         value |=  MODE_PIN6;  /* Area 0 SRAM interface */
 154         value |=  MODE_PIN7;
 155         value |=  MODE_PIN8;  /* Little Endian */
 156         value |=  MODE_PIN9;  /* Master Mode */
 157         value |=  MODE_PIN10; /* Crystal resonator */
 158         value |=  MODE_PIN11; /* Display Unit */
 159         value |=  MODE_PIN12;
 160         value &= ~MODE_PIN13; /* 29-bit address mode */
 161         value |=  MODE_PIN14; /* No PLL step-up */
 162
 163         return value;
 164 }
 165
 166 /*
 167  * The Machine Vector
 168  */
 169 static struct sh_machine_vector mv_apsh4a3a __initmv = {
 170         .mv_name                = "AP-SH4A-3A",
 171         .mv_setup               = apsh4a3a_setup,
 172         .mv_clk_init            = apsh4a3a_clk_init,
 173         .mv_init_irq            = apsh4a3a_init_irq,
 174         .mv_mode_pins           = apsh4a3a_mode_pins,
 175 };