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 (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 }; 176