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/twl.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 <plat/board.h>
  41 #include <plat/common.h>
  42 #include <plat/display.h>
  43 #include <plat/gpmc.h>
  44 #include <plat/nand.h>
  45 #include <plat/usb.h>
  46 #include <plat/timer-gp.h>
  47
  48 #include "mux.h"
  49 #include "hsmmc.h"
  50
  51 #define NAND_BLOCK_SIZE         SZ_128K
  52
  53 /*
  54  * OMAP3 Beagle revision
  55  * Run time detection of Beagle revision is done by reading GPIO.
  56  * GPIO ID -
  57  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  58  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  59  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  60  *      XM      = GPIO173, GPIO172, GPIO171: 0 0 0
  61  */
  62 enum {
  63         OMAP3BEAGLE_BOARD_UNKN = 0,
  64         OMAP3BEAGLE_BOARD_AXBX,
  65         OMAP3BEAGLE_BOARD_C1_3,
  66         OMAP3BEAGLE_BOARD_C4,
  67         OMAP3BEAGLE_BOARD_XM,
  68 };
  69
  70 static u8 omap3_beagle_version;
  71
  72 static u8 omap3_beagle_get_rev(void)
  73 {
  74         return omap3_beagle_version;
  75 }
  76
  77 static void __init omap3_beagle_init_rev(void)
  78 {
  79         int ret;
  80         u16 beagle_rev = 0;
  81
  82         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
  83         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
  84         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
  85
  86         ret = gpio_request(171, "rev_id_0");
  87         if (ret < 0)
  88                 goto fail0;
  89
  90         ret = gpio_request(172, "rev_id_1");
  91         if (ret < 0)
  92                 goto fail1;
  93
  94         ret = gpio_request(173, "rev_id_2");
  95         if (ret < 0)
  96                 goto fail2;
  97
  98         gpio_direction_input(171);
  99         gpio_direction_input(172);
 100         gpio_direction_input(173);
 101
 102         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 103                         | (gpio_get_value(173) << 2);
 104
 105         switch (beagle_rev) {
 106         case 7:
 107                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 108                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 109                 break;
 110         case 6:
 111                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 112                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 113                 break;
 114         case 5:
 115                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 116                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 117                 break;
 118         case 0:
 119                 printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
 120                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 121                 break;
 122         default:
 123                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 124                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 125         }
 126
 127         return;
 128
 129 fail2:
 130         gpio_free(172);
 131 fail1:
 132         gpio_free(171);
 133 fail0:
 134         printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 135         omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 136
 137         return;
 138 }
 139
 140 static struct mtd_partition omap3beagle_nand_partitions[] = {
 141         /* All the partition sizes are listed in terms of NAND block size */
 142         {
 143                 .name           = "X-Loader",
 144                 .offset         = 0,
 145                 .size           = 4 * NAND_BLOCK_SIZE,
 146                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 147         },
 148         {
 149                 .name           = "U-Boot",
 150                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 151                 .size           = 15 * NAND_BLOCK_SIZE,
 152                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 153         },
 154         {
 155                 .name           = "U-Boot Env",
 156                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 157                 .size           = 1 * NAND_BLOCK_SIZE,
 158         },
 159         {
 160                 .name           = "Kernel",
 161                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 162                 .size           = 32 * NAND_BLOCK_SIZE,
 163         },
 164         {
 165                 .name           = "File System",
 166                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 167                 .size           = MTDPART_SIZ_FULL,
 168         },
 169 };
 170
 171 static struct omap_nand_platform_data omap3beagle_nand_data = {
 172         .options        = NAND_BUSWIDTH_16,
 173         .parts          = omap3beagle_nand_partitions,
 174         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
 175         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
 176         .nand_setup     = NULL,
 177         .dev_ready      = NULL,
 178 };
 179
 180 /* DSS */
 181
 182 static int beagle_enable_dvi(struct omap_dss_device *dssdev)
 183 {
 184         if (gpio_is_valid(dssdev->reset_gpio))
 185                 gpio_set_value(dssdev->reset_gpio, 1);
 186
 187         return 0;
 188 }
 189
 190 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
 191 {
 192         if (gpio_is_valid(dssdev->reset_gpio))
 193                 gpio_set_value(dssdev->reset_gpio, 0);
 194 }
 195
 196 static struct omap_dss_device beagle_dvi_device = {
 197         .type = OMAP_DISPLAY_TYPE_DPI,
 198         .name = "dvi",
 199         .driver_name = "generic_panel",
 200         .phy.dpi.data_lines = 24,
 201         .reset_gpio = 170,
 202         .platform_enable = beagle_enable_dvi,
 203         .platform_disable = beagle_disable_dvi,
 204 };
 205
 206 static struct omap_dss_device beagle_tv_device = {
 207         .name = "tv",
 208         .driver_name = "venc",
 209         .type = OMAP_DISPLAY_TYPE_VENC,
 210         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 211 };
 212
 213 static struct omap_dss_device *beagle_dss_devices[] = {
 214         &beagle_dvi_device,
 215         &beagle_tv_device,
 216 };
 217
 218 static struct omap_dss_board_info beagle_dss_data = {
 219         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 220         .devices = beagle_dss_devices,
 221         .default_device = &beagle_dvi_device,
 222 };
 223
 224 static struct platform_device beagle_dss_device = {
 225         .name          = "omapdss",
 226         .id            = -1,
 227         .dev            = {
 228                 .platform_data = &beagle_dss_data,
 229         },
 230 };
 231
 232 static struct regulator_consumer_supply beagle_vdac_supply =
 233         REGULATOR_SUPPLY("vdda_dac", "omapdss");
 234
 235 static struct regulator_consumer_supply beagle_vdvi_supply =
 236         REGULATOR_SUPPLY("vdds_dsi", "omapdss");
 237
 238 static void __init beagle_display_init(void)
 239 {
 240         int r;
 241
 242         r = gpio_request(beagle_dvi_device.reset_gpio, "DVI reset");
 243         if (r < 0) {
 244                 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
 245                 return;
 246         }
 247
 248         gpio_direction_output(beagle_dvi_device.reset_gpio, 0);
 249 }
 250
 251 #include "sdram-micron-mt46h32m32lf-6.h"
 252
 253 static struct omap2_hsmmc_info mmc[] = {
 254         {
 255                 .mmc            = 1,
 256                 .wires          = 8,
 257                 .gpio_wp        = 29,
 258         },
 259         {}      /* Terminator */
 260 };
 261
 262 static struct regulator_consumer_supply beagle_vmmc1_supply = {
 263         .supply                 = "vmmc",
 264 };
 265
 266 static struct regulator_consumer_supply beagle_vsim_supply = {
 267         .supply                 = "vmmc_aux",
 268 };
 269
 270 static struct gpio_led gpio_leds[];
 271
 272 static int beagle_twl_gpio_setup(struct device *dev,
 273                 unsigned gpio, unsigned ngpio)
 274 {
 275         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
 276                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 277                 mmc[0].gpio_wp = 23;
 278         } else {
 279                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 280         }
 281         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 282         mmc[0].gpio_cd = gpio + 0;
 283         omap2_hsmmc_init(mmc);
 284
 285         /* link regulators to MMC adapters */
 286         beagle_vmmc1_supply.dev = mmc[0].dev;
 287         beagle_vsim_supply.dev = mmc[0].dev;
 288
 289         /* REVISIT: need ehci-omap hooks for external VBUS
 290          * power switch and overcurrent detect
 291          */
 292
 293         gpio_request(gpio + 1, "EHCI_nOC");
 294         gpio_direction_input(gpio + 1);
 295
 296         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
 297         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
 298         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 0);
 299
 300         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 301         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 302
 303         return 0;
 304 }
 305
 306 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 307         .gpio_base      = OMAP_MAX_GPIO_LINES,
 308         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 309         .irq_end        = TWL4030_GPIO_IRQ_END,
 310         .use_leds       = true,
 311         .pullups        = BIT(1),
 312         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 313                                 | BIT(15) | BIT(16) | BIT(17),
 314         .setup          = beagle_twl_gpio_setup,
 315 };
 316
 317 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 318 static struct regulator_init_data beagle_vmmc1 = {
 319         .constraints = {
 320                 .min_uV                 = 1850000,
 321                 .max_uV                 = 3150000,
 322                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 323                                         | REGULATOR_MODE_STANDBY,
 324                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 325                                         | REGULATOR_CHANGE_MODE
 326                                         | REGULATOR_CHANGE_STATUS,
 327         },
 328         .num_consumer_supplies  = 1,
 329         .consumer_supplies      = &beagle_vmmc1_supply,
 330 };
 331
 332 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 333 static struct regulator_init_data beagle_vsim = {
 334         .constraints = {
 335                 .min_uV                 = 1800000,
 336                 .max_uV                 = 3000000,
 337                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 338                                         | REGULATOR_MODE_STANDBY,
 339                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 340                                         | REGULATOR_CHANGE_MODE
 341                                         | REGULATOR_CHANGE_STATUS,
 342         },
 343         .num_consumer_supplies  = 1,
 344         .consumer_supplies      = &beagle_vsim_supply,
 345 };
 346
 347 /* VDAC for DSS driving S-Video (8 mA unloaded, max 65 mA) */
 348 static struct regulator_init_data beagle_vdac = {
 349         .constraints = {
 350                 .min_uV                 = 1800000,
 351                 .max_uV                 = 1800000,
 352                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 353                                         | REGULATOR_MODE_STANDBY,
 354                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 355                                         | REGULATOR_CHANGE_STATUS,
 356         },
 357         .num_consumer_supplies  = 1,
 358         .consumer_supplies      = &beagle_vdac_supply,
 359 };
 360
 361 /* VPLL2 for digital video outputs */
 362 static struct regulator_init_data beagle_vpll2 = {
 363         .constraints = {
 364                 .name                   = "VDVI",
 365                 .min_uV                 = 1800000,
 366                 .max_uV                 = 1800000,
 367                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 368                                         | REGULATOR_MODE_STANDBY,
 369                 .valid_ops_mask         = REGULATOR_CHANGE_MODE
 370                                         | REGULATOR_CHANGE_STATUS,
 371         },
 372         .num_consumer_supplies  = 1,
 373         .consumer_supplies      = &beagle_vdvi_supply,
 374 };
 375
 376 static struct twl4030_usb_data beagle_usb_data = {
 377         .usb_mode       = T2_USB_MODE_ULPI,
 378 };
 379
 380 static struct twl4030_codec_audio_data beagle_audio_data = {
 381         .audio_mclk = 26000000,
 382 };
 383
 384 static struct twl4030_codec_data beagle_codec_data = {
 385         .audio_mclk = 26000000,
 386         .audio = &beagle_audio_data,
 387 };
 388
 389 static struct twl4030_platform_data beagle_twldata = {
 390         .irq_base       = TWL4030_IRQ_BASE,
 391         .irq_end        = TWL4030_IRQ_END,
 392
 393         /* platform_data for children goes here */
 394         .usb            = &beagle_usb_data,
 395         .gpio           = &beagle_gpio_data,
 396         .codec          = &beagle_codec_data,
 397         .vmmc1          = &beagle_vmmc1,
 398         .vsim           = &beagle_vsim,
 399         .vdac           = &beagle_vdac,
 400         .vpll2          = &beagle_vpll2,
 401 };
 402
 403 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
 404         {
 405                 I2C_BOARD_INFO("twl4030", 0x48),
 406                 .flags = I2C_CLIENT_WAKE,
 407                 .irq = INT_34XX_SYS_NIRQ,
 408                 .platform_data = &beagle_twldata,
 409         },
 410 };
 411
 412 static int __init omap3_beagle_i2c_init(void)
 413 {
 414         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
 415                         ARRAY_SIZE(beagle_i2c_boardinfo));
 416         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 417          * projector don't work reliably with 400kHz */
 418         omap_register_i2c_bus(3, 100, NULL, 0);
 419         return 0;
 420 }
 421
 422 static struct gpio_led gpio_leds[] = {
 423         {
 424                 .name                   = "beagleboard::usr0",
 425                 .default_trigger        = "heartbeat",
 426                 .gpio                   = 150,
 427         },
 428         {
 429                 .name                   = "beagleboard::usr1",
 430                 .default_trigger        = "mmc0",
 431                 .gpio                   = 149,
 432         },
 433         {
 434                 .name                   = "beagleboard::pmu_stat",
 435                 .gpio                   = -EINVAL,      /* gets replaced */
 436                 .active_low             = true,
 437         },
 438 };
 439
 440 static struct gpio_led_platform_data gpio_led_info = {
 441         .leds           = gpio_leds,
 442         .num_leds       = ARRAY_SIZE(gpio_leds),
 443 };
 444
 445 static struct platform_device leds_gpio = {
 446         .name   = "leds-gpio",
 447         .id     = -1,
 448         .dev    = {
 449                 .platform_data  = &gpio_led_info,
 450         },
 451 };
 452
 453 static struct gpio_keys_button gpio_buttons[] = {
 454         {
 455                 .code                   = BTN_EXTRA,
 456                 .gpio                   = 7,
 457                 .desc                   = "user",
 458                 .wakeup                 = 1,
 459         },
 460 };
 461
 462 static struct gpio_keys_platform_data gpio_key_info = {
 463         .buttons        = gpio_buttons,
 464         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 465 };
 466
 467 static struct platform_device keys_gpio = {
 468         .name   = "gpio-keys",
 469         .id     = -1,
 470         .dev    = {
 471                 .platform_data  = &gpio_key_info,
 472         },
 473 };
 474
 475 static void __init omap3_beagle_init_irq(void)
 476 {
 477         omap2_init_common_hw(mt46h32m32lf6_sdrc_params,
 478                              mt46h32m32lf6_sdrc_params);
 479         omap_init_irq();
 480 #ifdef CONFIG_OMAP_32K_TIMER
 481         omap2_gp_clockevent_set_gptimer(12);
 482 #endif
 483         omap_gpio_init();
 484 }
 485
 486 static struct platform_device *omap3_beagle_devices[] __initdata = {
 487         &leds_gpio,
 488         &keys_gpio,
 489         &beagle_dss_device,
 490 };
 491
 492 static void __init omap3beagle_flash_init(void)
 493 {
 494         u8 cs = 0;
 495         u8 nandcs = GPMC_CS_NUM + 1;
 496
 497         /* find out the chip-select on which NAND exists */
 498         while (cs < GPMC_CS_NUM) {
 499                 u32 ret = 0;
 500                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
 501
 502                 if ((ret & 0xC00) == 0x800) {
 503                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
 504                         if (nandcs > GPMC_CS_NUM)
 505                                 nandcs = cs;
 506                 }
 507                 cs++;
 508         }
 509
 510         if (nandcs > GPMC_CS_NUM) {
 511                 printk(KERN_INFO "NAND: Unable to find configuration "
 512                                  "in GPMC\n ");
 513                 return;
 514         }
 515
 516         if (nandcs < GPMC_CS_NUM) {
 517                 omap3beagle_nand_data.cs = nandcs;
 518
 519                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
 520                 if (gpmc_nand_init(&omap3beagle_nand_data) < 0)
 521                         printk(KERN_ERR "Unable to register NAND device\n");
 522         }
 523 }
 524
 525 static const struct ehci_hcd_omap_platform_data ehci_pdata __initconst = {
 526
 527         .port_mode[0] = EHCI_HCD_OMAP_MODE_PHY,
 528         .port_mode[1] = EHCI_HCD_OMAP_MODE_PHY,
 529         .port_mode[2] = EHCI_HCD_OMAP_MODE_UNKNOWN,
 530
 531         .phy_reset  = true,
 532         .reset_gpio_port[0]  = -EINVAL,
 533         .reset_gpio_port[1]  = 147,
 534         .reset_gpio_port[2]  = -EINVAL
 535 };
 536
 537 #ifdef CONFIG_OMAP_MUX
 538 static struct omap_board_mux board_mux[] __initdata = {
 539         { .reg_offset = OMAP_MUX_TERMINATOR },
 540 };
 541 #else
 542 #define board_mux       NULL
 543 #endif
 544
 545 static struct omap_musb_board_data musb_board_data = {
 546         .interface_type         = MUSB_INTERFACE_ULPI,
 547         .mode                   = MUSB_OTG,
 548         .power                  = 100,
 549 };
 550
 551 static void __init omap3_beagle_init(void)
 552 {
 553         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 554         omap3_beagle_init_rev();
 555         omap3_beagle_i2c_init();
 556         platform_add_devices(omap3_beagle_devices,
 557                         ARRAY_SIZE(omap3_beagle_devices));
 558         omap_serial_init();
 559
 560         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 561         gpio_request(170, "DVI_nPD");
 562         /* REVISIT leave DVI powered down until it's needed ... */
 563         gpio_direction_output(170, true);
 564
 565         usb_musb_init(&musb_board_data);
 566         usb_ehci_init(&ehci_pdata);
 567         omap3beagle_flash_init();
 568
 569         /* Ensure SDRC pins are mux'd for self-refresh */
 570         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 571         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 572
 573         beagle_display_init();
 574 }
 575
 576 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 577         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 578         .phys_io        = 0x48000000,
 579         .io_pg_offst    = ((0xfa000000) >> 18) & 0xfffc,
 580         .boot_params    = 0x80000100,
 581         .map_io         = omap3_map_io,
 582         .reserve        = omap_reserve,
 583         .init_irq       = omap3_beagle_init_irq,
 584         .init_machine   = omap3_beagle_init,
 585         .timer          = &omap_timer,
 586 MACHINE_END