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 }; 183