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/regulator/fixed.h> 17 #include <linux/regulator/machine.h> 18 #include <linux/smsc911x.h> 19 #include <linux/irq.h> 20 #include <linux/clk.h> 21 #include <asm/machvec.h> 22 #include <asm/sizes.h> 23 #include <asm/clock.h> 24 25 static struct mtd_partition nor_flash_partitions[] = { 26 { 27 .name = "loader", 28 .offset = 0x00000000, 29 .size = 512 * 1024, 30 }, 31 { 32 .name = "bootenv", 33 .offset = MTDPART_OFS_APPEND, 34 .size = 512 * 1024, 35 }, 36 { 37 .name = "kernel", 38 .offset = MTDPART_OFS_APPEND, 39 .size = 4 * 1024 * 1024, 40 }, 41 { 42 .name = "data", 43 .offset = MTDPART_OFS_APPEND, 44 .size = MTDPART_SIZ_FULL, 45 }, 46 }; 47 48 static struct physmap_flash_data nor_flash_data = { 49 .width = 4, 50 .parts = nor_flash_partitions, 51 .nr_parts = ARRAY_SIZE(nor_flash_partitions), 52 }; 53 54 static struct resource nor_flash_resources[] = { 55 [0] = { 56 .start = 0x00000000, 57 .end = 0x01000000 - 1, 58 .flags = IORESOURCE_MEM, 59 } 60 }; 61 62 static struct platform_device nor_flash_device = { 63 .name = "physmap-flash", 64 .dev = { 65 .platform_data = &nor_flash_data, 66 }, 67 .num_resources = ARRAY_SIZE(nor_flash_resources), 68 .resource = nor_flash_resources, 69 }; 70 71 /* Dummy supplies, where voltage doesn't matter */ 72 static struct regulator_consumer_supply dummy_supplies[] = { 73 REGULATOR_SUPPLY("vddvario", "smsc911x"), 74 REGULATOR_SUPPLY("vdd33a", "smsc911x"), 75 }; 76 77 static struct resource smsc911x_resources[] = { 78 [0] = { 79 .name = "smsc911x-memory", 80 .start = 0xA4000000, 81 .end = 0xA4000000 + SZ_256 - 1, 82 .flags = IORESOURCE_MEM, 83 }, 84 [1] = { 85 .name = "smsc911x-irq", 86 .start = evt2irq(0x200), 87 .end = evt2irq(0x200), 88 .flags = IORESOURCE_IRQ, 89 }, 90 }; 91 92 static struct smsc911x_platform_config smsc911x_config = { 93 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, 94 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, 95 .flags = SMSC911X_USE_16BIT, 96 .phy_interface = PHY_INTERFACE_MODE_MII, 97 }; 98 99 static struct platform_device smsc911x_device = { 100 .name = "smsc911x", 101 .id = -1, 102 .num_resources = ARRAY_SIZE(smsc911x_resources), 103 .resource = smsc911x_resources, 104 .dev = { 105 .platform_data = &smsc911x_config, 106 }, 107 }; 108 109 static struct platform_device *apsh4a3a_devices[] __initdata = { 110 &nor_flash_device, 111 &smsc911x_device, 112 }; 113 114 static int __init apsh4a3a_devices_setup(void) 115 { 116 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); 117 118 return platform_add_devices(apsh4a3a_devices, 119 ARRAY_SIZE(apsh4a3a_devices)); 120 } 121 device_initcall(apsh4a3a_devices_setup); 122 123 static int apsh4a3a_clk_init(void) 124 { 125 struct clk *clk; 126 int ret; 127 128 clk = clk_get(NULL, "extal"); 129 if (IS_ERR(clk)) 130 return PTR_ERR(clk); 131 ret = clk_set_rate(clk, 33333000); 132 clk_put(clk); 133 134 return ret; 135 } 136 137 /* Initialize the board */ 138 static void __init apsh4a3a_setup(char **cmdline_p) 139 { 140 printk(KERN_INFO "Alpha Project AP-SH4A-3A support:\n"); 141 } 142 143 static void __init apsh4a3a_init_irq(void) 144 { 145 plat_irq_setup_pins(IRQ_MODE_IRQ7654); 146 } 147 148 /* Return the board specific boot mode pin configuration */ 149 static int apsh4a3a_mode_pins(void) 150 { 151 int value = 0; 152 153 /* These are the factory default settings of SW1 and SW2. 154 * If you change these dip switches then you will need to 155 * adjust the values below as well. 156 */ 157 value &= ~MODE_PIN0; /* Clock Mode 16 */ 158 value &= ~MODE_PIN1; 159 value &= ~MODE_PIN2; 160 value &= ~MODE_PIN3; 161 value |= MODE_PIN4; 162 value &= ~MODE_PIN5; /* 16-bit Area0 bus width */ 163 value |= MODE_PIN6; /* Area 0 SRAM interface */ 164 value |= MODE_PIN7; 165 value |= MODE_PIN8; /* Little Endian */ 166 value |= MODE_PIN9; /* Master Mode */ 167 value |= MODE_PIN10; /* Crystal resonator */ 168 value |= MODE_PIN11; /* Display Unit */ 169 value |= MODE_PIN12; 170 value &= ~MODE_PIN13; /* 29-bit address mode */ 171 value |= MODE_PIN14; /* No PLL step-up */ 172 173 return value; 174 } 175 176 /* 177 * The Machine Vector 178 */ 179 static struct sh_machine_vector mv_apsh4a3a __initmv = { 180 .mv_name = "AP-SH4A-3A", 181 .mv_setup = apsh4a3a_setup, 182 .mv_clk_init = apsh4a3a_clk_init, 183 .mv_init_irq = apsh4a3a_init_irq, 184 .mv_mode_pins = apsh4a3a_mode_pins, 185 }; 186