arch/arm/mach-omap2/board-2430sdp.c

   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/err.h>
  23 #include <linux/clk.h>
  24 #include <linux/spi/spi.h>
  25 #include <linux/spi/tsc2046.h>
  26
  27 #include <asm/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 <asm/arch/gpio.h>
  34 #include <asm/arch/mux.h>
  35 #include <asm/arch/board.h>
  36 #include <asm/arch/common.h>
  37 #include <asm/arch/gpmc.h>
  38 #include <asm/arch/mcspi.h>
  39 #include "prcm-regs.h"
  40
  41 #include <asm/io.h>
  42
  43 #define SDP2430_FLASH_CS        0
  44 #define SDP2430_SMC91X_CS       5
  45
  46 /* TSC2046 (touchscreen) */
  47 #define TS_GPIO                 24
  48
  49 static struct mtd_partition sdp2430_partitions[] = {
  50         /* bootloader (U-Boot, etc) in first sector */
  51         {
  52                 .name           = "bootloader",
  53                 .offset         = 0,
  54                 .size           = SZ_256K,
  55                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  56          },
  57         /* bootloader params in the next sector */
  58         {
  59                 .name           = "params",
  60                 .offset         = MTDPART_OFS_APPEND,
  61                 .size           = SZ_128K,
  62                 .mask_flags     = 0,
  63          },
  64         /* kernel */
  65         {
  66                 .name           = "kernel",
  67                 .offset         = MTDPART_OFS_APPEND,
  68                 .size           = SZ_2M,
  69                 .mask_flags     = 0
  70         },
  71         /* file system */
  72         {
  73                 .name           = "filesystem",
  74                 .offset         = MTDPART_OFS_APPEND,
  75                 .size           = MTDPART_SIZ_FULL,
  76                 .mask_flags     = 0
  77         }
  78 };
  79
  80 static struct flash_platform_data sdp2430_flash_data = {
  81         .map_name       = "cfi_probe",
  82         .width          = 2,
  83         .parts          = sdp2430_partitions,
  84         .nr_parts       = ARRAY_SIZE(sdp2430_partitions),
  85 };
  86
  87 static struct resource sdp2430_flash_resource = {
  88         .start          = SDP2430_CS0_BASE,
  89         .end            = SDP2430_CS0_BASE + SZ_64M - 1,
  90         .flags          = IORESOURCE_MEM,
  91 };
  92
  93 static struct platform_device sdp2430_flash_device = {
  94         .name           = "omapflash",
  95         .id             = 0,
  96         .dev = {
  97                 .platform_data  = &sdp2430_flash_data,
  98         },
  99         .num_resources  = 1,
 100         .resource       = &sdp2430_flash_resource,
 101 };
 102
 103 static struct resource sdp2430_smc91x_resources[] = {
 104         [0] = {
 105                 .start  = SDP2430_CS0_BASE,
 106                 .end    = SDP2430_CS0_BASE + SZ_64M - 1,
 107                 .flags  = IORESOURCE_MEM,
 108         },
 109         [1] = {
 110                 .start  = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 111                 .end    = OMAP_GPIO_IRQ(OMAP24XX_ETHR_GPIO_IRQ),
 112                 .flags  = IORESOURCE_IRQ,
 113         },
 114 };
 115
 116 static struct platform_device sdp2430_smc91x_device = {
 117         .name           = "smc91x",
 118         .id             = -1,
 119         .num_resources  = ARRAY_SIZE(sdp2430_smc91x_resources),
 120         .resource       = sdp2430_smc91x_resources,
 121 };
 122
 123 static struct platform_device *sdp2430_devices[] __initdata = {
 124         &sdp2430_smc91x_device,
 125         &sdp2430_flash_device,
 126 };
 127
 128 static struct tsc2046_platform_data tsc2046_config = {
 129         .dav_gpio       = TS_GPIO,
 130         .gpio_debounce  = 0xa,
 131 };
 132
 133 static struct omap2_mcspi_device_config tsc2046_mcspi_config = {
 134         .turbo_mode     = 0,
 135         .single_channel = 0,  /* 0: slave, 1: master */
 136 };
 137
 138 static struct spi_board_info sdp2430_spi_board_info[] __initdata = {
 139         [0] = {
 140                 /*
 141                  * TSC2046 operates at a max freqency of 2MHz, so
 142                  * operate slightly below at 1.5MHz
 143                  */
 144                 .modalias        = "tsc2046",
 145                 .bus_num         = 1,
 146                 .chip_select     = 0,
 147                 .max_speed_hz    = 1500000,
 148                 .controller_data = &tsc2046_mcspi_config,
 149                 .platform_data   = &tsc2046_config,
 150         },
 151 };
 152
 153 static inline void __init sdp2430_init_smc91x(void)
 154 {
 155         int eth_cs;
 156         unsigned long cs_mem_base;
 157         unsigned int rate;
 158         struct clk *l3ck;
 159
 160         eth_cs = SDP2430_SMC91X_CS;
 161
 162         l3ck = clk_get(NULL, "core_l3_ck");
 163         if (IS_ERR(l3ck))
 164                 rate = 100000000;
 165         else
 166                 rate = clk_get_rate(l3ck);
 167
 168         /* Make sure CS1 timings are correct, for 2430 always muxed */
 169         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
 170
 171         if (rate >= 160000000) {
 172                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
 173                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
 174                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
 175                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 176                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 177         } else if (rate >= 130000000) {
 178                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 179                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 180                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 181                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
 182                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
 183         } else { /* rate = 100000000 */
 184                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
 185                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
 186                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
 187                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
 188                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
 189         }
 190
 191         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
 192                 printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
 193                 return;
 194         }
 195
 196         sdp2430_smc91x_resources[0].start = cs_mem_base + 0x300;
 197         sdp2430_smc91x_resources[0].end = cs_mem_base + 0x30f;
 198         udelay(100);
 199
 200         if (omap_request_gpio(OMAP24XX_ETHR_GPIO_IRQ) < 0) {
 201                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
 202                         OMAP24XX_ETHR_GPIO_IRQ);
 203                 gpmc_cs_free(eth_cs);
 204                 return;
 205         }
 206         omap_set_gpio_direction(OMAP24XX_ETHR_GPIO_IRQ, 1);
 207
 208 }
 209
 210 static void __init omap_2430sdp_init_irq(void)
 211 {
 212         omap2_init_common_hw();
 213         omap_init_irq();
 214         omap_gpio_init();
 215         sdp2430_init_smc91x();
 216 }
 217
 218 static struct omap_uart_config sdp2430_uart_config __initdata = {
 219         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 220 };
 221
 222 static struct omap_board_config_kernel sdp2430_config[] = {
 223         {OMAP_TAG_UART, &sdp2430_uart_config},
 224 };
 225
 226 #if     defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
 227
 228 #define OMAP2_I2C_BASE1         0x48070000
 229 #define OMAP2_I2C_BASE2         0x48072000
 230 #define OMAP2_I2C_INT1          56
 231 #define OMAP2_I2C_INT2          57
 232
 233 static u32 omap2_i2c1_clkrate   = 400;
 234 static u32 omap2_i2c2_clkrate   = 2600;
 235
 236 static struct resource i2c_resources1[] = {
 237         {
 238                 .start  = OMAP2_I2C_BASE1,
 239                 .end    = OMAP2_I2C_BASE1 + 0x3f,
 240                 .flags  = IORESOURCE_MEM,
 241         },
 242         {
 243                 .start  = OMAP2_I2C_INT1,
 244                 .flags  = IORESOURCE_IRQ,
 245         },
 246 };
 247
 248 static struct resource i2c_resources2[] = {
 249         {
 250                 .start  = OMAP2_I2C_BASE2,
 251                 .end    = OMAP2_I2C_BASE2 + 0x3f,
 252                 .flags  = IORESOURCE_MEM,
 253         },
 254         {
 255                 .start  = OMAP2_I2C_INT2,
 256                 .flags  = IORESOURCE_IRQ,
 257         },
 258 };
 259
 260 static struct platform_device omap_i2c_device1 = {
 261         .name           = "i2c_omap",
 262         .id             = 1,
 263         .num_resources  = ARRAY_SIZE(i2c_resources1),
 264         .resource       = i2c_resources1,
 265         .dev            = {
 266                 .platform_data  = &omap2_i2c1_clkrate,
 267         },
 268 };
 269
 270 static struct platform_device omap_i2c_device2 = {
 271         .name           = "i2c_omap",
 272         .id             = 2,
 273         .num_resources  = ARRAY_SIZE(i2c_resources2),
 274         .resource       = i2c_resources2,
 275         .dev            = {
 276                 .platform_data  = &omap2_i2c2_clkrate,
 277         },
 278 };
 279
 280 static void omap_init_i2c(void)
 281 {
 282         (void) platform_device_register(&omap_i2c_device2);
 283         (void) platform_device_register(&omap_i2c_device1);
 284 }
 285
 286 #else
 287
 288 static void omap_init_i2c(void) {}
 289
 290 #endif
 291
 292 static int __init omap2430_i2c_init(void)
 293 {
 294         omap_init_i2c();
 295         return 0;
 296 }
 297
 298 extern void __init sdp2430_flash_init(void);
 299
 300 static void __init omap_2430sdp_init(void)
 301 {
 302         platform_add_devices(sdp2430_devices, ARRAY_SIZE(sdp2430_devices));
 303         omap_board_config = sdp2430_config;
 304         omap_board_config_size = ARRAY_SIZE(sdp2430_config);
 305         omap_serial_init();
 306
 307         sdp2430_flash_init();
 308
 309         spi_register_board_info(sdp2430_spi_board_info,
 310                                 ARRAY_SIZE(sdp2430_spi_board_info));
 311 }
 312
 313 static void __init omap_2430sdp_map_io(void)
 314 {
 315         omap2_map_common_io();
 316 }
 317
 318 arch_initcall(omap2430_i2c_init);
 319
 320 MACHINE_START(OMAP_2430SDP, "OMAP2430 sdp2430 board")
 321         /* Maintainer: Syed Khasim - Texas Instruments Inc */
 322         .phys_io        = 0x48000000,
 323         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 324         .boot_params    = 0x80000100,
 325         .map_io         = omap_2430sdp_map_io,
 326         .init_irq       = omap_2430sdp_init_irq,
 327         .init_machine   = omap_2430sdp_init,
 328         .timer          = &omap_timer,
 329 MACHINE_END