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   1 /*
   2  * linux/arch/arm/mach-omap2/board-2430sdp.c
   3  *
   4  * Copyright (C) 2006 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-generic.c
   7  *
   8  * Initial Code : Based on a patch from Komal Shah and Richard Woodruff
   9  * Updated the Code for 2430 SDP : Syed Mohammed Khasim
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/kernel.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19 #include <linux/mtd/mtd.h>
  20 #include <linux/mtd/partitions.h>
  21 #include <linux/delay.h>
  22 #include <linux/i2c/twl4030.h>
  23 #include <linux/err.h>
  24 #include <linux/clk.h>
  25 #include <linux/io.h>
  26
  27 #include <mach/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/map.h>
  31 #include <asm/mach/flash.h>
  32
  33 #include <mach/gpio.h>
  34 #include <mach/mux.h>
  35 #include <mach/board.h>
  36 #include <mach/common.h>
  37 #include <mach/gpmc.h>
  38 #include <mach/usb.h>
  39
  40 #include "mmc-twl4030.h"
  41
  42 #define SDP2430_CS0_BASE        0x04000000
  43 #define SDP2430_FLASH_CS        0
  44 #define SDP2430_SMC91X_CS       5
  45
  46 #define SDP2430_ETHR_GPIO_IRQ           149
  47
  48 static struct mtd_partition sdp2430_partitions[] = {
  49         /* bootloader (U-Boot, etc) in first sector */
  50         {
  51                 .name           = "bootloader",
  52                 .offset         = 0,
  53                 .size           = SZ_256K,
  54                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  55          },
  56         /* bootloader params in the next sector */
  57         {
  58                 .name           = "params",
  59                 .offset         = MTDPART_OFS_APPEND,
  60                 .size           = SZ_128K,
  61                 .mask_flags     = 0,
  62          },
  63         /* kernel */
  64         {
  65                 .name           = "kernel",
  66                 .offset         = MTDPART_OFS_APPEND,
  67                 .size           = SZ_2M,
  68                 .mask_flags     = 0
  69         },
  70         /* file system */
  71         {
  72                 .name           = "filesystem",
  73                 .offset         = MTDPART_OFS_APPEND,
  74                 .size           = MTDPART_SIZ_FULL,
  75                 .mask_flags     = 0
  76         }
  77 };
  78
  79 static struct flash_platform_data sdp2430_flash_data = {
  80         .map_name       = "cfi_probe",
  81         .width          = 2,
  82         .parts          = sdp2430_partitions,
  83         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  84 };
  85
  86 static struct resource sdp2430_flash_resource = {
  87         .start          = SDP2430_CS0_BASE,
  88         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  89         .flags          = IORESOURCE_MEM,
  90 };
  91
  92 static struct platform_device sdp2430_flash_device = {
  93         .name           = "omapflash",
  94         .id             = 0,
  95         .dev = {
  96                 .platform_data  = &sdp2430_flash_data,
  97         },
  98         .num_resources  = 1,
  99         .resource       = &sdp2430_flash_resource,
 100 };
 101
 102 static struct resource sdp2430_smc91x_resources[] = {
 103         [0] = {
 104                 .start  = SDP2430_CS0_BASE,
 105                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 106                 .flags  = IORESOURCE_MEM,
 107         },
 108         [1] = {
 109                 .start  = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
 110                 .end    = OMAP_GPIO_IRQ(SDP2430_ETHR_GPIO_IRQ),
 111                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
 112         },
 113 };
 114
 115 static struct platform_device sdp2430_smc91x_device = {
 116         .name           = "smc91x",
 117         .id             = -1,
 118         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 119         .resource       = sdp2430_smc91x_resources,
 120 };
 121
 122 static struct platform_device *sdp2430_devices[] __initdata = {
 123         &sdp2430_smc91x_device,
 124         &sdp2430_flash_device,
 125 };
 126
 127 static inline void __init sdp2430_init_smc91x(void)
 128 {
 129         int eth_cs;
 130         unsigned long cs_mem_base;
 131         unsigned int rate;
 132         struct clk *gpmc_fck;
 133
 134         eth_cs = SDP2430_SMC91X_CS;
 135
 136         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
 137         if (IS_ERR(gpmc_fck)) {
 138                 WARN_ON(1);
 139                 return;
 140         }
 141
 142         clk_enable(gpmc_fck);
 143         rate = clk_get_rate(gpmc_fck);
 144
 145         /* Make sure CS1 timings are correct, for 2430 always muxed */
 146         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 147
 148         if (rate >= 160000000) {
 149                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 150                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 151                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 152                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 153                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 154         } else if (rate >= 130000000) {
 155                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 156                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 157                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 158                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 159                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 160         } else { /* rate = 100000000 */
 161                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 162                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 163                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 164                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 165                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 166         }
 167
 168         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 169                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 170                 goto out;
 171         }
 172
 173         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 174         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 175         udelay(100);
 176
 177         if (gpio_request(SDP2430_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
 178                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 179                         SDP2430_ETHR_GPIO_IRQ);
 180                 gpmc_cs_free(eth_cs);
 181                 goto out;
 182         }
 183         gpio_direction_input(SDP2430_ETHR_GPIO_IRQ);
 184
 185 out:
 186         clk_disable(gpmc_fck);
 187         clk_put(gpmc_fck);
 188 }
 189
 190 static void __init omap_2430sdp_init_irq(void)
 191 {
 192         omap2_init_common_hw(NULL);
 193         omap_init_irq();
 194         omap_gpio_init();
 195         sdp2430_init_smc91x();
 196 }
 197
 198 static struct omap_uart_config sdp2430_uart_config __initdata = {
 199         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 200 };
 201
 202 static struct omap_board_config_kernel sdp2430_config[] = {
 203         {OMAP_TAG_UART, &sdp2430_uart_config},
 204 };
 205
 206
 207 static struct twl4030_gpio_platform_data sdp2430_gpio_data = {
 208         .gpio_base      = OMAP_MAX_GPIO_LINES,
 209         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 210         .irq_end        = TWL4030_GPIO_IRQ_END,
 211 };
 212
 213 static struct twl4030_platform_data sdp2430_twldata = {
 214         .irq_base       = TWL4030_IRQ_BASE,
 215         .irq_end        = TWL4030_IRQ_END,
 216
 217         /* platform_data for children goes here */
 218         .gpio           = &sdp2430_gpio_data,
 219 };
 220
 221 static struct i2c_board_info __initdata sdp2430_i2c_boardinfo[] = {
 222         {
 223                 I2C_BOARD_INFO("twl4030", 0x48),
 224                 .flags = I2C_CLIENT_WAKE,
 225                 .irq = INT_24XX_SYS_NIRQ,
 226                 .platform_data = &sdp2430_twldata,
 227         },
 228 };
 229
 230 static int __init omap2430_i2c_init(void)
 231 {
 232         omap_register_i2c_bus(1, 400, NULL, 0);
 233         omap_register_i2c_bus(2, 2600, sdp2430_i2c_boardinfo,
 234                         ARRAY_SIZE(sdp2430_i2c_boardinfo));
 235         return 0;
 236 }
 237
 238 static struct twl4030_hsmmc_info mmc[] __initdata = {
 239         {
 240                 .mmc            = 1,
 241                 .wires          = 4,
 242                 .gpio_cd        = -EINVAL,
 243                 .gpio_wp        = -EINVAL,
 244                 .ext_clock      = 1,
 245         },
 246         {}      /* Terminator */
 247 };
 248
 249 static void __init omap_2430sdp_init(void)
 250 {
 251         omap2430_i2c_init();
 252
 253         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 254         omap_board_config = sdp2430_config;
 255         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 256         omap_serial_init();
 257         twl4030_mmc_init(mmc);
 258         usb_musb_init();
 259 }
 260
 261 static void __init omap_2430sdp_map_io(void)
 262 {
 263         omap2_set_globals_243x();
 264         omap2_map_common_io();
 265 }
 266
 267 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 268         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 269         .phys_io        = 0x48000000,
 270         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 271         .boot_params    = 0x80000100,
 272         .map_io         = omap_2430sdp_map_io,
 273         .init_irq       = omap_2430sdp_init_irq,
 274         .init_machine   = omap_2430sdp_init,
 275         .timer          = &omap_timer,
 276 MACHINE_END