arch/arm/mach-omap2/board-omap3beagle.c

   1 /*
   2  * linux/arch/arm/mach-omap2/board-omap3beagle.c
   3  *
   4  * Copyright (C) 2008 Texas Instruments
   5  *
   6  * Modified from mach-omap2/board-3430sdp.c
   7  *
   8  * Initial code: Syed Mohammed Khasim
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/delay.h>
  19 #include <linux/err.h>
  20 #include <linux/clk.h>
  21 #include <linux/io.h>
  22 #include <linux/leds.h>
  23 #include <linux/gpio.h>
  24 #include <linux/input.h>
  25 #include <linux/gpio_keys.h>
  26
  27 #include <linux/mtd/mtd.h>
  28 #include <linux/mtd/partitions.h>
  29 #include <linux/mtd/nand.h>
  30
  31 #include <linux/regulator/machine.h>
  32 #include <linux/i2c/twl4030.h>
  33
  34 #include <mach/hardware.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/flash.h>
  39
  40 #include <mach/board.h>
  41 #include <mach/common.h>
  42 #include <mach/gpmc.h>
  43 #include <mach/nand.h>
  44 #include <mach/mux.h>
  45 #include <mach/usb.h>
  46 #include <mach/timer-gp.h>
  47
  48 #include "mmc-twl4030.h"
  49
  50 #define GPMC_CS0_BASE  0x60
  51 #define GPMC_CS_SIZE   0x30
  52
  53 #define NAND_BLOCK_SIZE         SZ_128K
  54
  55 static struct mtd_partition omap3beagle_nand_partitions[] = {
  56         /* All the partition sizes are listed in terms of NAND block size */
  57         {
  58                 .name           = "X-Loader",
  59                 .offset         = 0,
  60                 .size           = 4 * NAND_BLOCK_SIZE,
  61                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  62         },
  63         {
  64                 .name           = "U-Boot",
  65                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
  66                 .size           = 15 * NAND_BLOCK_SIZE,
  67                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
  68         },
  69         {
  70                 .name           = "U-Boot Env",
  71                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
  72                 .size           = 1 * NAND_BLOCK_SIZE,
  73         },
  74         {
  75                 .name           = "Kernel",
  76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
  77                 .size           = 32 * NAND_BLOCK_SIZE,
  78         },
  79         {
  80                 .name           = "File System",
  81                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
  82                 .size           = MTDPART_SIZ_FULL,
  83         },
  84 };
  85
  86 static struct omap_nand_platform_data omap3beagle_nand_data = {
  87         .options        = NAND_BUSWIDTH_16,
  88         .parts          = omap3beagle_nand_partitions,
  89         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
  90         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
  91         .nand_setup     = NULL,
  92         .dev_ready      = NULL,
  93 };
  94
  95 static struct resource omap3beagle_nand_resource = {
  96         .flags          = IORESOURCE_MEM,
  97 };
  98
  99 static struct platform_device omap3beagle_nand_device = {
 100         .name           = "omap2-nand",
 101         .id             = -1,
 102         .dev            = {
 103                 .platform_data  = &omap3beagle_nand_data,
 104         },
 105         .num_resources  = 1,
 106         .resource       = &omap3beagle_nand_resource,
 107 };
 108
 109 #include "sdram-micron-mt46h32m32lf-6.h"
 110
 111 static struct twl4030_hsmmc_info mmc[] = {
 112         {
 113                 .mmc            = 1,
 114                 .wires          = 8,
 115                 .gpio_wp        = 29,
 116         },
 117         {}      /* Terminator */
 118 };
 119
 120 static struct platform_device omap3_beagle_lcd_device = {
 121         .name           = "omap3beagle_lcd",
 122         .id             = -1,
 123 };
 124
 125 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
 126         .ctrl_name      = "internal",
 127 };
 128
 129 static struct regulator_consumer_supply beagle_vmmc1_supply = {
 130         .supply                 = "vmmc",
 131 };
 132
 133 static struct regulator_consumer_supply beagle_vsim_supply = {
 134         .supply                 = "vmmc_aux",
 135 };
 136
 137 static struct gpio_led gpio_leds[];
 138
 139 static int beagle_twl_gpio_setup(struct device *dev,
 140                 unsigned gpio, unsigned ngpio)
 141 {
 142         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 143                 omap_cfg_reg(AG9_34XX_GPIO23);
 144                 mmc[0].gpio_wp = 23;
 145         } else {
 146                 omap_cfg_reg(AH8_34XX_GPIO29);
 147         }
 148         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 149         mmc[0].gpio_cd = gpio + 0;
 150         twl4030_mmc_init(mmc);
 151
 152         /* link regulators to MMC adapters */
 153         beagle_vmmc1_supply.dev = mmc[0].dev;
 154         beagle_vsim_supply.dev = mmc[0].dev;
 155
 156         /* REVISIT: need ehci-omap hooks for external VBUS
 157          * power switch and overcurrent detect
 158          */
 159
 160         gpio_request(gpio + 1, "EHCI_nOC");
 161         gpio_direction_input(gpio + 1);
 162
 163         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 164         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 165         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
 166
 167         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 168         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 169
 170         return 0;
 171 }
 172
 173 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 174         .gpio_base      = OMAP_MAX_GPIO_LINES,
 175         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 176         .irq_end        = TWL4030_GPIO_IRQ_END,
 177         .use_leds       = true,
 178         .pullups        = BIT(1),
 179         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 180                                 | BIT(15) | BIT(16) | BIT(17),
 181         .setup          = beagle_twl_gpio_setup,
 182 };
 183
 184 static struct regulator_consumer_supply beagle_vdac_supply = {
 185         .supply         = "vdac",
 186         .dev            = &omap3_beagle_lcd_device.dev,
 187 };
 188
 189 static struct regulator_consumer_supply beagle_vdvi_supply = {
 190         .supply         = "vdvi",
 191         .dev            = &omap3_beagle_lcd_device.dev,
 192 };
 193
 194 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 195 static struct regulator_init_data beagle_vmmc1 = {
 196         .constraints = {
 197                 .min_uV                 = 1850000,
 198                 .max_uV                 = 3150000,
 199                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 200                                         | REGULATOR_MODE_STANDBY,
 201                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 202                                         | REGULATOR_CHANGE_MODE
 203                                         | REGULATOR_CHANGE_STATUS,
 204         },
 205         .num_consumer_supplies  = 1,
 206         .consumer_supplies      = &beagle_vmmc1_supply,
 207 };
 208
 209 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 210 static struct regulator_init_data beagle_vsim = {
 211         .constraints = {
 212                 .min_uV                 = 1800000,
 213                 .max_uV                 = 3000000,
 214                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 215                                         | REGULATOR_MODE_STANDBY,
 216                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 217                                         | REGULATOR_CHANGE_MODE
 218                                         | REGULATOR_CHANGE_STATUS,
 219         },
 220         .num_consumer_supplies  = 1,
 221         .consumer_supplies      = &beagle_vsim_supply,
 222 };
 223
 224 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 225 static struct regulator_init_data beagle_vdac = {
 226         .constraints = {
 227                 .min_uV                 = 1800000,
 228                 .max_uV                 = 1800000,
 229                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 230                                         | REGULATOR_MODE_STANDBY,
 231                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 232                                         | REGULATOR_CHANGE_STATUS,
 233         },
 234         .num_consumer_supplies  = 1,
 235         .consumer_supplies      = &beagle_vdac_supply,
 236 };
 237
 238 /* VPLL2 for digital video outputs */
 239 static struct regulator_init_data beagle_vpll2 = {
 240         .constraints = {
 241                 .name                   = "VDVI",
 242                 .min_uV                 = 1800000,
 243                 .max_uV                 = 1800000,
 244                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 245                                         | REGULATOR_MODE_STANDBY,
 246                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 247                                         | REGULATOR_CHANGE_STATUS,
 248         },
 249         .num_consumer_supplies  = 1,
 250         .consumer_supplies      = &beagle_vdvi_supply,
 251 };
 252
 253 static struct twl4030_usb_data beagle_usb_data = {
 254         .usb_mode       = T2_USB_MODE_ULPI,
 255 };
 256
 257 static struct twl4030_platform_data beagle_twldata = {
 258         .irq_base       = TWL4030_IRQ_BASE,
 259         .irq_end        = TWL4030_IRQ_END,
 260
 261         /* platform_data for children goes here */
 262         .usb            = &beagle_usb_data,
 263         .gpio           = &beagle_gpio_data,
 264         .vmmc1          = &beagle_vmmc1,
 265         .vsim           = &beagle_vsim,
 266         .vdac           = &beagle_vdac,
 267         .vpll2          = &beagle_vpll2,
 268 };
 269
 270 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 271         {
 272                 I2C_BOARD_INFO("twl4030", 0x48),
 273                 .flags = I2C_CLIENT_WAKE,
 274                 .irq = INT_34XX_SYS_NIRQ,
 275                 .platform_data = &beagle_twldata,
 276         },
 277 };
 278
 279 static int __init omap3_beagle_i2c_init(void)
 280 {
 281         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 282                         ARRAY_SIZE(beagle_i2c_boardinfo));
 283         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 284          * projector don't work reliably with 400kHz */
 285         omap_register_i2c_bus(3, 100, NULL, 0);
 286         return 0;
 287 }
 288
 289 static struct gpio_led gpio_leds[] = {
 290         {
 291                 .name                   = "beagleboard::usr0",
 292                 .default_trigger        = "heartbeat",
 293                 .gpio                   = 150,
 294         },
 295         {
 296                 .name                   = "beagleboard::usr1",
 297                 .default_trigger        = "mmc0",
 298                 .gpio                   = 149,
 299         },
 300         {
 301                 .name                   = "beagleboard::pmu_stat",
 302                 .gpio                   = -EINVAL,      /* gets replaced */
 303                 .active_low             = true,
 304         },
 305 };
 306
 307 static struct gpio_led_platform_data gpio_led_info = {
 308         .leds           = gpio_leds,
 309         .num_leds       = ARRAY_SIZE(gpio_leds),
 310 };
 311
 312 static struct platform_device leds_gpio = {
 313         .name   = "leds-gpio",
 314         .id     = -1,
 315         .dev    = {
 316                 .platform_data  = &gpio_led_info,
 317         },
 318 };
 319
 320 static struct gpio_keys_button gpio_buttons[] = {
 321         {
 322                 .code                   = BTN_EXTRA,
 323                 .gpio                   = 7,
 324                 .desc                   = "user",
 325                 .wakeup                 = 1,
 326         },
 327 };
 328
 329 static struct gpio_keys_platform_data gpio_key_info = {
 330         .buttons        = gpio_buttons,
 331         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 332 };
 333
 334 static struct platform_device keys_gpio = {
 335         .name   = "gpio-keys",
 336         .id     = -1,
 337         .dev    = {
 338                 .platform_data  = &gpio_key_info,
 339         },
 340 };
 341
 342 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
 343         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
 344 };
 345
 346 static void __init omap3_beagle_init_irq(void)
 347 {
 348         omap_board_config = omap3_beagle_config;
 349         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
 350         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 351                              mt46h32m32lf6_sdrc_params);
 352         omap_init_irq();
 353 #ifdef CONFIG_OMAP_32K_TIMER
 354         omap2_gp_clockevent_set_gptimer(12);
 355 #endif
 356         omap_gpio_init();
 357 }
 358
 359 static struct platform_device *omap3_beagle_devices[] __initdata = {
 360         &omap3_beagle_lcd_device,
 361         &leds_gpio,
 362         &keys_gpio,
 363 };
 364
 365 static void __init omap3beagle_flash_init(void)
 366 {
 367         u8 cs = 0;
 368         u8 nandcs = GPMC_CS_NUM + 1;
 369
 370         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
 371
 372         /* find out the chip-select on which NAND exists */
 373         while (cs < GPMC_CS_NUM) {
 374                 u32 ret = 0;
 375                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 376
 377                 if ((ret & 0xC00) == 0x800) {
 378                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 379                         if (nandcs > GPMC_CS_NUM)
 380                                 nandcs = cs;
 381                 }
 382                 cs++;
 383         }
 384
 385         if (nandcs > GPMC_CS_NUM) {
 386                 printk(KERN_INFO "NAND: Unable to find configuration "
 387                                  "in GPMC\n ");
 388                 return;
 389         }
 390
 391         if (nandcs < GPMC_CS_NUM) {
 392                 omap3beagle_nand_data.cs = nandcs;
 393                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
 394                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
 395                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
 396
 397                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 398                 if (platform_device_register(&omap3beagle_nand_device) < 0)
 399                         printk(KERN_ERR "Unable to register NAND device\n");
 400         }
 401 }
 402
 403 static void __init omap3_beagle_init(void)
 404 {
 405         omap3_beagle_i2c_init();
 406         platform_add_devices(omap3_beagle_devices,
 407                         ARRAY_SIZE(omap3_beagle_devices));
 408         omap_serial_init();
 409
 410         omap_cfg_reg(J25_34XX_GPIO170);
 411         gpio_request(170, "DVI_nPD");
 412         /* REVISIT leave DVI powered down until it's needed ... */
 413         gpio_direction_output(170, true);
 414
 415         usb_musb_init();
 416         omap3beagle_flash_init();
 417
 418         /* Ensure SDRC pins are mux'd for self-refresh */
 419         omap_cfg_reg(H16_34XX_SDRC_CKE0);
 420         omap_cfg_reg(H17_34XX_SDRC_CKE1);
 421 }
 422
 423 static void __init omap3_beagle_map_io(void)
 424 {
 425         omap2_set_globals_343x();
 426         omap2_map_common_io();
 427 }
 428
 429 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 430         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 431         .phys_io        = 0x48000000,
 432         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
 433         .boot_params    = 0x80000100,
 434         .map_io         = omap3_beagle_map_io,
 435         .init_irq       = omap3_beagle_init_irq,
 436         .init_machine   = omap3_beagle_init,
 437         .timer          = &omap_timer,
 438 MACHINE_END