arch/sh/boards/board-apsh4a3a.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * ALPHAPROJECT AP-SH4A-3A Support.
   4  *
   5  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
   6  * Copyright (C) 2008  Yoshihiro Shimoda
   7  * Copyright (C) 2009  Paul Mundt
   8  */
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/io.h>
  12 #include <linux/mtd/physmap.h>
  13 #include <linux/regulator/fixed.h>
  14 #include <linux/regulator/machine.h>
  15 #include <linux/smsc911x.h>
  16 #include <linux/irq.h>
  17 #include <linux/clk.h>
  18 #include <asm/machvec.h>
  19 #include <linux/sizes.h>
  20 #include <asm/clock.h>
  21
  22 static struct mtd_partition nor_flash_partitions[] = {
  23         {
  24                 .name           = "loader",
  25                 .offset         = 0x00000000,
  26                 .size           = 512 * 1024,
  27         },
  28         {
  29                 .name           = "bootenv",
  30                 .offset         = MTDPART_OFS_APPEND,
  31                 .size           = 512 * 1024,
  32         },
  33         {
  34                 .name           = "kernel",
  35                 .offset         = MTDPART_OFS_APPEND,
  36                 .size           = 4 * 1024 * 1024,
  37         },
  38         {
  39                 .name           = "data",
  40                 .offset         = MTDPART_OFS_APPEND,
  41                 .size           = MTDPART_SIZ_FULL,
  42         },
  43 };
  44
  45 static struct physmap_flash_data nor_flash_data = {
  46         .width          = 4,
  47         .parts          = nor_flash_partitions,
  48         .nr_parts       = ARRAY_SIZE(nor_flash_partitions),
  49 };
  50
  51 static struct resource nor_flash_resources[] = {
  52         [0]     = {
  53                 .start  = 0x00000000,
  54                 .end    = 0x01000000 - 1,
  55                 .flags  = IORESOURCE_MEM,
  56         }
  57 };
  58
  59 static struct platform_device nor_flash_device = {
  60         .name           = "physmap-flash",
  61         .dev            = {
  62                 .platform_data  = &nor_flash_data,
  63         },
  64         .num_resources  = ARRAY_SIZE(nor_flash_resources),
  65         .resource       = nor_flash_resources,
  66 };
  67
  68 /* Dummy supplies, where voltage doesn't matter */
  69 static struct regulator_consumer_supply dummy_supplies[] = {
  70         REGULATOR_SUPPLY("vddvario", "smsc911x"),
  71         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
  72 };
  73
  74 static struct resource smsc911x_resources[] = {
  75         [0] = {
  76                 .name           = "smsc911x-memory",
  77                 .start          = 0xA4000000,
  78                 .end            = 0xA4000000 + SZ_256 - 1,
  79                 .flags          = IORESOURCE_MEM,
  80         },
  81         [1] = {
  82                 .name           = "smsc911x-irq",
  83                 .start          = evt2irq(0x200),
  84                 .end            = evt2irq(0x200),
  85                 .flags          = IORESOURCE_IRQ,
  86         },
  87 };
  88
  89 static struct smsc911x_platform_config smsc911x_config = {
  90         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
  91         .irq_type       = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
  92         .flags          = SMSC911X_USE_16BIT,
  93         .phy_interface  = PHY_INTERFACE_MODE_MII,
  94 };
  95
  96 static struct platform_device smsc911x_device = {
  97         .name           = "smsc911x",
  98         .id             = -1,
  99         .num_resources  = ARRAY_SIZE(smsc911x_resources),
 100         .resource       = smsc911x_resources,
 101         .dev = {
 102                 .platform_data = &smsc911x_config,
 103         },
 104 };
 105
 106 static struct platform_device *apsh4a3a_devices[] __initdata = {
 107         &nor_flash_device,
 108         &smsc911x_device,
 109 };
 110
 111 static int __init apsh4a3a_devices_setup(void)
 112 {
 113         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 114
 115         return platform_add_devices(apsh4a3a_devices,
 116                                     ARRAY_SIZE(apsh4a3a_devices));
 117 }
 118 device_initcall(apsh4a3a_devices_setup);
 119
 120 static int apsh4a3a_clk_init(void)
 121 {
 122         struct clk *clk;
 123         int ret;
 124
 125         clk = clk_get(NULL, "extal");
 126         if (IS_ERR(clk))
 127                 return PTR_ERR(clk);
 128         ret = clk_set_rate(clk, 33333000);
 129         clk_put(clk);
 130
 131         return ret;
 132 }
 133
 134 /* Initialize the board */
 135 static void __init apsh4a3a_setup(char **cmdline_p)
 136 {
 137         printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n");
 138 }
 139
 140 static void __init apsh4a3a_init_irq(void)
 141 {
 142         plat_irq_setup_pins(IRQ_MODE_IRQ7654);
 143 }
 144
 145 /* Return the board specific boot mode pin configuration */
 146 static int apsh4a3a_mode_pins(void)
 147 {
 148         int value = 0;
 149
 150         /* These are the factory default settings of SW1 and SW2.
 151          * If you change these dip switches then you will need to
 152          * adjust the values below as well.
 153          */
 154         value &= ~MODE_PIN0;  /* Clock Mode 16 */
 155         value &= ~MODE_PIN1;
 156         value &= ~MODE_PIN2;
 157         value &= ~MODE_PIN3;
 158         value |=  MODE_PIN4;
 159         value &= ~MODE_PIN5;  /* 16-bit Area0 bus width */
 160         value |=  MODE_PIN6;  /* Area 0 SRAM interface */
 161         value |=  MODE_PIN7;
 162         value |=  MODE_PIN8;  /* Little Endian */
 163         value |=  MODE_PIN9;  /* Master Mode */
 164         value |=  MODE_PIN10; /* Crystal resonator */
 165         value |=  MODE_PIN11; /* Display Unit */
 166         value |=  MODE_PIN12;
 167         value &= ~MODE_PIN13; /* 29-bit address mode */
 168         value |=  MODE_PIN14; /* No PLL step-up */
 169
 170         return value;
 171 }
 172
 173 /*
 174  * The Machine Vector
 175  */
 176 static struct sh_machine_vector mv_apsh4a3a __initmv = {
 177         .mv_name                = "AP-SH4A-3A",
 178         .mv_setup               = apsh4a3a_setup,
 179         .mv_clk_init            = apsh4a3a_clk_init,
 180         .mv_init_irq            = apsh4a3a_init_irq,
 181         .mv_mode_pins           = apsh4a3a_mode_pins,
 182 };