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 #include <linux/mmc/host.h>
  31
  32 #include <linux/regulator/machine.h>
  33 #include <linux/i2c/twl.h>
  34
  35 #include <mach/hardware.h>
  36 #include <asm/mach-types.h>
  37 #include <asm/mach/arch.h>
  38 #include <asm/mach/map.h>
  39 #include <asm/mach/flash.h>
  40
  41 #include <plat/board.h>
  42 #include <plat/common.h>
  43 #include <plat/display.h>
  44 #include <plat/gpmc.h>
  45 #include <plat/nand.h>
  46 #include <plat/usb.h>
  47
  48 #include "mux.h"
  49 #include "hsmmc.h"
  50 #include "timer-gp.h"
  51
  52 #define NAND_BLOCK_SIZE         SZ_128K
  53
  54 /*
  55  * OMAP3 Beagle revision
  56  * Run time detection of Beagle revision is done by reading GPIO.
  57  * GPIO ID -
  58  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  59  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  60  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  61  *      XM      = GPIO173, GPIO172, GPIO171: 0 0 0
  62  */
  63 enum {
  64         OMAP3BEAGLE_BOARD_UNKN = 0,
  65         OMAP3BEAGLE_BOARD_AXBX,
  66         OMAP3BEAGLE_BOARD_C1_3,
  67         OMAP3BEAGLE_BOARD_C4,
  68         OMAP3BEAGLE_BOARD_XM,
  69 };
  70
  71 static u8 omap3_beagle_version;
  72
  73 static u8 omap3_beagle_get_rev(void)
  74 {
  75         return omap3_beagle_version;
  76 }
  77
  78 static void __init omap3_beagle_init_rev(void)
  79 {
  80         int ret;
  81         u16 beagle_rev = 0;
  82
  83         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
  84         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
  85         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
  86
  87         ret = gpio_request(171, "rev_id_0");
  88         if (ret < 0)
  89                 goto fail0;
  90
  91         ret = gpio_request(172, "rev_id_1");
  92         if (ret < 0)
  93                 goto fail1;
  94
  95         ret = gpio_request(173, "rev_id_2");
  96         if (ret < 0)
  97                 goto fail2;
  98
  99         gpio_direction_input(171);
 100         gpio_direction_input(172);
 101         gpio_direction_input(173);
 102
 103         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 104                         | (gpio_get_value(173) << 2);
 105
 106         switch (beagle_rev) {
 107         case 7:
 108                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 109                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 110                 break;
 111         case 6:
 112                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 113                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 114                 break;
 115         case 5:
 116                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 117                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 118                 break;
 119         case 0:
 120                 printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
 121                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 122                 break;
 123         default:
 124                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 125                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 126         }
 127
 128         return;
 129
 130 fail2:
 131         gpio_free(172);
 132 fail1:
 133         gpio_free(171);
 134 fail0:
 135         printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 136         omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 137
 138         return;
 139 }
 140
 141 static struct mtd_partition omap3beagle_nand_partitions[] = {
 142         /* All the partition sizes are listed in terms of NAND block size */
 143         {
 144                 .name           = "X-Loader",
 145                 .offset         = 0,
 146                 .size           = 4 * NAND_BLOCK_SIZE,
 147                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 148         },
 149         {
 150                 .name           = "U-Boot",
 151                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 152                 .size           = 15 * NAND_BLOCK_SIZE,
 153                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 154         },
 155         {
 156                 .name           = "U-Boot Env",
 157                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 158                 .size           = 1 * NAND_BLOCK_SIZE,
 159         },
 160         {
 161                 .name           = "Kernel",
 162                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 163                 .size           = 32 * NAND_BLOCK_SIZE,
 164         },
 165         {
 166                 .name           = "File System",
 167                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 168                 .size           = MTDPART_SIZ_FULL,
 169         },
 170 };
 171
 172 static struct omap_nand_platform_data omap3beagle_nand_data = {
 173         .options        = NAND_BUSWIDTH_16,
 174         .parts          = omap3beagle_nand_partitions,
 175         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
 176         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
 177         .nand_setup     = NULL,
 178         .dev_ready      = NULL,
 179 };
 180
 181 /* DSS */
 182
 183 static int beagle_enable_dvi(struct omap_dss_device *dssdev)
 184 {
 185         if (gpio_is_valid(dssdev->reset_gpio))
 186                 gpio_set_value(dssdev->reset_gpio, 1);
 187
 188         return 0;
 189 }
 190
 191 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
 192 {
 193         if (gpio_is_valid(dssdev->reset_gpio))
 194                 gpio_set_value(dssdev->reset_gpio, 0);
 195 }
 196
 197 static struct omap_dss_device beagle_dvi_device = {
 198         .type = OMAP_DISPLAY_TYPE_DPI,
 199         .name = "dvi",
 200         .driver_name = "generic_panel",
 201         .phy.dpi.data_lines = 24,
 202         .reset_gpio = 170,
 203         .platform_enable = beagle_enable_dvi,
 204         .platform_disable = beagle_disable_dvi,
 205 };
 206
 207 static struct omap_dss_device beagle_tv_device = {
 208         .name = "tv",
 209         .driver_name = "venc",
 210         .type = OMAP_DISPLAY_TYPE_VENC,
 211         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 212 };
 213
 214 static struct omap_dss_device *beagle_dss_devices[] = {
 215         &beagle_dvi_device,
 216         &beagle_tv_device,
 217 };
 218
 219 static struct omap_dss_board_info beagle_dss_data = {
 220         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 221         .devices = beagle_dss_devices,
 222         .default_device = &beagle_dvi_device,
 223 };
 224
 225 static struct platform_device beagle_dss_device = {
 226         .name          = "omapdss",
 227         .id            = -1,
 228         .dev            = {
 229                 .platform_data = &beagle_dss_data,
 230         },
 231 };
 232
 233 static struct regulator_consumer_supply beagle_vdac_supply =
 234         REGULATOR_SUPPLY("vdda_dac", "omapdss");
 235
 236 static struct regulator_consumer_supply beagle_vdvi_supply =
 237         REGULATOR_SUPPLY("vdds_dsi", "omapdss");
 238
 239 static void __init beagle_display_init(void)
 240 {
 241         int r;
 242
 243         r = gpio_request(beagle_dvi_device.reset_gpio, "DVI reset");
 244         if (r < 0) {
 245                 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
 246                 return;
 247         }
 248
 249         gpio_direction_output(beagle_dvi_device.reset_gpio, 0);
 250 }
 251
 252 #include "sdram-micron-mt46h32m32lf-6.h"
 253
 254 static struct omap2_hsmmc_info mmc[] = {
 255         {
 256                 .mmc            = 1,
 257                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 258                 .gpio_wp        = 29,
 259         },
 260         {}      /* Terminator */
 261 };
 262
 263 static struct regulator_consumer_supply beagle_vmmc1_supply = {
 264         .supply                 = "vmmc",
 265 };
 266
 267 static struct regulator_consumer_supply beagle_vsim_supply = {
 268         .supply                 = "vmmc_aux",
 269 };
 270
 271 static struct gpio_led gpio_leds[];
 272
 273 static int beagle_twl_gpio_setup(struct device *dev,
 274                 unsigned gpio, unsigned ngpio)
 275 {
 276         if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
 277                 mmc[0].gpio_wp = -EINVAL;
 278         } else if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
 279                 (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
 280                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 281                 mmc[0].gpio_wp = 23;
 282         } else {
 283                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 284         }
 285         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 286         mmc[0].gpio_cd = gpio + 0;
 287         omap2_hsmmc_init(mmc);
 288
 289         /* link regulators to MMC adapters */
 290         beagle_vmmc1_supply.dev = mmc[0].dev;
 291         beagle_vsim_supply.dev = mmc[0].dev;
 292
 293         /* REVISIT: need ehci-omap hooks for external VBUS
 294          * power switch and overcurrent detect
 295          */
 296
 297         gpio_request(gpio + 1, "EHCI_nOC");
 298         gpio_direction_input(gpio + 1);
 299
 300         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 301         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 302         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 303
 304         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 305         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 306
 307         return 0;
 308 }
 309
 310 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 311         .gpio_base      = OMAP_MAX_GPIO_LINES,
 312         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 313         .irq_end        = TWL4030_GPIO_IRQ_END,
 314         .use_leds       = true,
 315         .pullups        = BIT(1),
 316         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 317                                 | BIT(15) | BIT(16) | BIT(17),
 318         .setup          = beagle_twl_gpio_setup,
 319 };
 320
 321 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 322 static struct regulator_init_data beagle_vmmc1 = {
 323         .constraints = {
 324                 .min_uV                 = 1850000,
 325                 .max_uV                 = 3150000,
 326                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 327                                         | REGULATOR_MODE_STANDBY,
 328                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 329                                         | REGULATOR_CHANGE_MODE
 330                                         | REGULATOR_CHANGE_STATUS,
 331         },
 332         .num_consumer_supplies  = 1,
 333         .consumer_supplies      = &beagle_vmmc1_supply,
 334 };
 335
 336 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 337 static struct regulator_init_data beagle_vsim = {
 338         .constraints = {
 339                 .min_uV                 = 1800000,
 340                 .max_uV                 = 3000000,
 341                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 342                                         | REGULATOR_MODE_STANDBY,
 343                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 344                                         | REGULATOR_CHANGE_MODE
 345                                         | REGULATOR_CHANGE_STATUS,
 346         },
 347         .num_consumer_supplies  = 1,
 348         .consumer_supplies      = &beagle_vsim_supply,
 349 };
 350
 351 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 352 static struct regulator_init_data beagle_vdac = {
 353         .constraints = {
 354                 .min_uV                 = 1800000,
 355                 .max_uV                 = 1800000,
 356                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 357                                         | REGULATOR_MODE_STANDBY,
 358                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 359                                         | REGULATOR_CHANGE_STATUS,
 360         },
 361         .num_consumer_supplies  = 1,
 362         .consumer_supplies      = &beagle_vdac_supply,
 363 };
 364
 365 /* VPLL2 for digital video outputs */
 366 static struct regulator_init_data beagle_vpll2 = {
 367         .constraints = {
 368                 .name                   = "VDVI",
 369                 .min_uV                 = 1800000,
 370                 .max_uV                 = 1800000,
 371                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 372                                         | REGULATOR_MODE_STANDBY,
 373                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 374                                         | REGULATOR_CHANGE_STATUS,
 375         },
 376         .num_consumer_supplies  = 1,
 377         .consumer_supplies      = &beagle_vdvi_supply,
 378 };
 379
 380 static struct twl4030_usb_data beagle_usb_data = {
 381         .usb_mode       = T2_USB_MODE_ULPI,
 382 };
 383
 384 static struct twl4030_codec_audio_data beagle_audio_data = {
 385         .audio_mclk = 26000000,
 386 };
 387
 388 static struct twl4030_codec_data beagle_codec_data = {
 389         .audio_mclk = 26000000,
 390         .audio = &beagle_audio_data,
 391 };
 392
 393 static struct twl4030_platform_data beagle_twldata = {
 394         .irq_base       = TWL4030_IRQ_BASE,
 395         .irq_end        = TWL4030_IRQ_END,
 396
 397         /* platform_data for children goes here */
 398         .usb            = &beagle_usb_data,
 399         .gpio           = &beagle_gpio_data,
 400         .codec          = &beagle_codec_data,
 401         .vmmc1          = &beagle_vmmc1,
 402         .vsim           = &beagle_vsim,
 403         .vdac           = &beagle_vdac,
 404         .vpll2          = &beagle_vpll2,
 405 };
 406
 407 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 408         {
 409                 I2C_BOARD_INFO("twl4030", 0x48),
 410                 .flags = I2C_CLIENT_WAKE,
 411                 .irq = INT_34XX_SYS_NIRQ,
 412                 .platform_data = &beagle_twldata,
 413         },
 414 };
 415
 416 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 417        {
 418                I2C_BOARD_INFO("eeprom", 0x50),
 419        },
 420 };
 421
 422 static int __init omap3_beagle_i2c_init(void)
 423 {
 424         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 425                         ARRAY_SIZE(beagle_i2c_boardinfo));
 426         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 427          * projector don't work reliably with 400kHz */
 428         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 429         return 0;
 430 }
 431
 432 static struct gpio_led gpio_leds[] = {
 433         {
 434                 .name                   = "beagleboard::usr0",
 435                 .default_trigger        = "heartbeat",
 436                 .gpio                   = 150,
 437         },
 438         {
 439                 .name                   = "beagleboard::usr1",
 440                 .default_trigger        = "mmc0",
 441                 .gpio                   = 149,
 442         },
 443         {
 444                 .name                   = "beagleboard::pmu_stat",
 445                 .gpio                   = -EINVAL,      /* gets replaced */
 446                 .active_low             = true,
 447         },
 448 };
 449
 450 static struct gpio_led_platform_data gpio_led_info = {
 451         .leds           = gpio_leds,
 452         .num_leds       = ARRAY_SIZE(gpio_leds),
 453 };
 454
 455 static struct platform_device leds_gpio = {
 456         .name   = "leds-gpio",
 457         .id     = -1,
 458         .dev    = {
 459                 .platform_data  = &gpio_led_info,
 460         },
 461 };
 462
 463 static struct gpio_keys_button gpio_buttons[] = {
 464         {
 465                 .code                   = BTN_EXTRA,
 466                 .gpio                   = 7,
 467                 .desc                   = "user",
 468                 .wakeup                 = 1,
 469         },
 470 };
 471
 472 static struct gpio_keys_platform_data gpio_key_info = {
 473         .buttons        = gpio_buttons,
 474         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 475 };
 476
 477 static struct platform_device keys_gpio = {
 478         .name   = "gpio-keys",
 479         .id     = -1,
 480         .dev    = {
 481                 .platform_data  = &gpio_key_info,
 482         },
 483 };
 484
 485 static void __init omap3_beagle_init_irq(void)
 486 {
 487         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 488                              mt46h32m32lf6_sdrc_params);
 489         omap_init_irq();
 490 #ifdef CONFIG_OMAP_32K_TIMER
 491         omap2_gp_clockevent_set_gptimer(12);
 492 #endif
 493         omap_gpio_init();
 494 }
 495
 496 static struct platform_device *omap3_beagle_devices[] __initdata = {
 497         &leds_gpio,
 498         &keys_gpio,
 499         &beagle_dss_device,
 500 };
 501
 502 static void __init omap3beagle_flash_init(void)
 503 {
 504         u8 cs = 0;
 505         u8 nandcs = GPMC_CS_NUM + 1;
 506
 507         /* find out the chip-select on which NAND exists */
 508         while (cs < GPMC_CS_NUM) {
 509                 u32 ret = 0;
 510                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 511
 512                 if ((ret & 0xC00) == 0x800) {
 513                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 514                         if (nandcs > GPMC_CS_NUM)
 515                                 nandcs = cs;
 516                 }
 517                 cs++;
 518         }
 519
 520         if (nandcs > GPMC_CS_NUM) {
 521                 printk(KERN_INFO "NAND: Unable to find configuration "
 522                                  "in GPMC\n ");
 523                 return;
 524         }
 525
 526         if (nandcs < GPMC_CS_NUM) {
 527                 omap3beagle_nand_data.cs = nandcs;
 528
 529                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 530                 if (gpmc_nand_init(&omap3beagle_nand_data) < 0)
 531                         printk(KERN_ERR "Unable to register NAND device\n");
 532         }
 533 }
 534
 535 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 536
 537         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 538         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 539         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 540
 541         .phy_reset  = true,
 542         .reset_gpio_port[0]  = -EINVAL,
 543         .reset_gpio_port[1]  = 147,
 544         .reset_gpio_port[2]  = -EINVAL
 545 };
 546
 547 #ifdef CONFIG_OMAP_MUX
 548 static struct omap_board_mux board_mux[] __initdata = {
 549         { .reg_offset = OMAP_MUX_TERMINATOR },
 550 };
 551 #else
 552 #define board_mux       NULL
 553 #endif
 554
 555 static struct omap_musb_board_data musb_board_data = {
 556         .interface_type         = MUSB_INTERFACE_ULPI,
 557         .mode                   = MUSB_OTG,
 558         .power                  = 100,
 559 };
 560
 561 static void __init omap3_beagle_init(void)
 562 {
 563         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 564         omap3_beagle_init_rev();
 565         omap3_beagle_i2c_init();
 566         platform_add_devices(omap3_beagle_devices,
 567                         ARRAY_SIZE(omap3_beagle_devices));
 568         omap_serial_init();
 569
 570         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 571         gpio_request(170, "DVI_nPD");
 572         /* REVISIT leave DVI powered down until it's needed ... */
 573         gpio_direction_output(170, true);
 574
 575         usb_musb_init(&musb_board_data);
 576         usb_ehci_init(&ehci_pdata);
 577         omap3beagle_flash_init();
 578
 579         /* Ensure SDRC pins are mux'd for self-refresh */
 580         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 581         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 582
 583         beagle_display_init();
 584 }
 585
 586 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 587         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 588         .boot_params    = 0x80000100,
 589         .map_io         = omap3_map_io,
 590         .reserve        = omap_reserve,
 591         .init_irq       = omap3_beagle_init_irq,
 592         .init_machine   = omap3_beagle_init,
 593         .timer          = &omap_timer,
 594 MACHINE_END