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 #include <linux/opp.h>
  27 #include <linux/cpu.h>
  28
  29 #include <linux/mtd/mtd.h>
  30 #include <linux/mtd/partitions.h>
  31 #include <linux/mtd/nand.h>
  32 #include <linux/mmc/host.h>
  33
  34 #include <linux/regulator/machine.h>
  35 #include <linux/i2c/twl.h>
  36
  37 #include <asm/mach-types.h>
  38 #include <asm/mach/arch.h>
  39 #include <asm/mach/map.h>
  40 #include <asm/mach/flash.h>
  41
  42 #include <video/omapdss.h>
  43 #include <video/omap-panel-tfp410.h>
  44 #include <linux/platform_data/mtd-nand-omap2.h>
  45
  46 #include "common.h"
  47 #include "omap_device.h"
  48 #include "gpmc.h"
  49 #include "soc.h"
  50 #include "mux.h"
  51 #include "hsmmc.h"
  52 #include "pm.h"
  53 #include "board-flash.h"
  54 #include "common-board-devices.h"
  55
  56 #define NAND_CS 0
  57
  58 /*
  59  * OMAP3 Beagle revision
  60  * Run time detection of Beagle revision is done by reading GPIO.
  61  * GPIO ID -
  62  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  63  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  64  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  65  *      XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
  66  *      XMC = GPIO173, GPIO172, GPIO171: 0 1 0
  67  */
  68 enum {
  69         OMAP3BEAGLE_BOARD_UNKN = 0,
  70         OMAP3BEAGLE_BOARD_AXBX,
  71         OMAP3BEAGLE_BOARD_C1_3,
  72         OMAP3BEAGLE_BOARD_C4,
  73         OMAP3BEAGLE_BOARD_XM,
  74         OMAP3BEAGLE_BOARD_XMC,
  75 };
  76
  77 static u8 omap3_beagle_version;
  78
  79 /*
  80  * Board-specific configuration
  81  * Defaults to BeagleBoard-xMC
  82  */
  83 static struct {
  84         int mmc1_gpio_wp;
  85         int usb_pwr_level;
  86         int dvi_pd_gpio;
  87         int usr_button_gpio;
  88         int mmc_caps;
  89 } beagle_config = {
  90         .mmc1_gpio_wp = -EINVAL,
  91         .usb_pwr_level = GPIOF_OUT_INIT_LOW,
  92         .dvi_pd_gpio = -EINVAL,
  93         .usr_button_gpio = 4,
  94         .mmc_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
  95 };
  96
  97 static struct gpio omap3_beagle_rev_gpios[] __initdata = {
  98         { 171, GPIOF_IN, "rev_id_0"    },
  99         { 172, GPIOF_IN, "rev_id_1" },
 100         { 173, GPIOF_IN, "rev_id_2"    },
 101 };
 102
 103 static void __init omap3_beagle_init_rev(void)
 104 {
 105         int ret;
 106         u16 beagle_rev = 0;
 107
 108         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
 109         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
 110         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
 111
 112         ret = gpio_request_array(omap3_beagle_rev_gpios,
 113                                  ARRAY_SIZE(omap3_beagle_rev_gpios));
 114         if (ret < 0) {
 115                 printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 116                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 117                 return;
 118         }
 119
 120         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 121                         | (gpio_get_value(173) << 2);
 122
 123         gpio_free_array(omap3_beagle_rev_gpios,
 124                         ARRAY_SIZE(omap3_beagle_rev_gpios));
 125
 126         switch (beagle_rev) {
 127         case 7:
 128                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 129                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 130                 beagle_config.mmc1_gpio_wp = 29;
 131                 beagle_config.dvi_pd_gpio = 170;
 132                 beagle_config.usr_button_gpio = 7;
 133                 break;
 134         case 6:
 135                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 136                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 137                 beagle_config.mmc1_gpio_wp = 23;
 138                 beagle_config.dvi_pd_gpio = 170;
 139                 beagle_config.usr_button_gpio = 7;
 140                 break;
 141         case 5:
 142                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 143                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 144                 beagle_config.mmc1_gpio_wp = 23;
 145                 beagle_config.dvi_pd_gpio = 170;
 146                 beagle_config.usr_button_gpio = 7;
 147                 break;
 148         case 0:
 149                 printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
 150                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 151                 beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
 152                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 153                 break;
 154         case 2:
 155                 printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
 156                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
 157                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 158                 break;
 159         default:
 160                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 161                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 162         }
 163 }
 164
 165 static struct mtd_partition omap3beagle_nand_partitions[] = {
 166         /* All the partition sizes are listed in terms of NAND block size */
 167         {
 168                 .name           = "X-Loader",
 169                 .offset         = 0,
 170                 .size           = 4 * NAND_BLOCK_SIZE,
 171                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 172         },
 173         {
 174                 .name           = "U-Boot",
 175                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 176                 .size           = 15 * NAND_BLOCK_SIZE,
 177                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 178         },
 179         {
 180                 .name           = "U-Boot Env",
 181                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 182                 .size           = 1 * NAND_BLOCK_SIZE,
 183         },
 184         {
 185                 .name           = "Kernel",
 186                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 187                 .size           = 32 * NAND_BLOCK_SIZE,
 188         },
 189         {
 190                 .name           = "File System",
 191                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 192                 .size           = MTDPART_SIZ_FULL,
 193         },
 194 };
 195
 196 /* DSS */
 197
 198 static struct tfp410_platform_data dvi_panel = {
 199         .i2c_bus_num = 3,
 200         .power_down_gpio = -1,
 201 };
 202
 203 static struct omap_dss_device beagle_dvi_device = {
 204         .type = OMAP_DISPLAY_TYPE_DPI,
 205         .name = "dvi",
 206         .driver_name = "tfp410",
 207         .data = &dvi_panel,
 208         .phy.dpi.data_lines = 24,
 209 };
 210
 211 static struct omap_dss_device beagle_tv_device = {
 212         .name = "tv",
 213         .driver_name = "venc",
 214         .type = OMAP_DISPLAY_TYPE_VENC,
 215         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 216 };
 217
 218 static struct omap_dss_device *beagle_dss_devices[] = {
 219         &beagle_dvi_device,
 220         &beagle_tv_device,
 221 };
 222
 223 static struct omap_dss_board_info beagle_dss_data = {
 224         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 225         .devices = beagle_dss_devices,
 226         .default_device = &beagle_dvi_device,
 227 };
 228
 229 #include "sdram-micron-mt46h32m32lf-6.h"
 230
 231 static struct omap2_hsmmc_info mmc[] = {
 232         {
 233                 .mmc            = 1,
 234                 .caps           = MMC_CAP_4_BIT_DATA,
 235                 .gpio_wp        = -EINVAL,
 236                 .deferred       = true,
 237         },
 238         {}      /* Terminator */
 239 };
 240
 241 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 242         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 243 };
 244
 245 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 246         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 247 };
 248
 249 static struct gpio_led gpio_leds[];
 250
 251 static int beagle_twl_gpio_setup(struct device *dev,
 252                 unsigned gpio, unsigned ngpio)
 253 {
 254         int r;
 255
 256         mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
 257         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 258         mmc[0].gpio_cd = gpio + 0;
 259         omap_hsmmc_late_init(mmc);
 260
 261         /*
 262          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 263          * high / others active low)
 264          * DVI reset GPIO is different between beagle revisions
 265          */
 266         /* Valid for all -xM revisions */
 267         if (cpu_is_omap3630()) {
 268                 /*
 269                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 270                  * gpio + 2 control varies depending on the board rev as below:
 271                  * P7/P8 revisions(prototype): Camera EN
 272                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 273                  */
 274                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 275                                      "nDVI_PWR_EN");
 276                 if (r)
 277                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 278                                 __func__);
 279
 280                 beagle_config.dvi_pd_gpio = gpio + 2;
 281
 282         } else {
 283                 /*
 284                  * REVISIT: need ehci-omap hooks for external VBUS
 285                  * power switch and overcurrent detect
 286                  */
 287                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 288                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 289         }
 290         dvi_panel.power_down_gpio = beagle_config.dvi_pd_gpio;
 291
 292         gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
 293                         "nEN_USB_PWR");
 294
 295         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 296         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 297
 298         return 0;
 299 }
 300
 301 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 302         .use_leds       = true,
 303         .pullups        = BIT(1),
 304         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 305                                 | BIT(15) | BIT(16) | BIT(17),
 306         .setup          = beagle_twl_gpio_setup,
 307 };
 308
 309 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 310 static struct regulator_init_data beagle_vmmc1 = {
 311         .constraints = {
 312                 .min_uV                 = 1850000,
 313                 .max_uV                 = 3150000,
 314                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 315                                         | REGULATOR_MODE_STANDBY,
 316                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 317                                         | REGULATOR_CHANGE_MODE
 318                                         | REGULATOR_CHANGE_STATUS,
 319         },
 320         .num_consumer_supplies  = ARRAY_SIZE(beagle_vmmc1_supply),
 321         .consumer_supplies      = beagle_vmmc1_supply,
 322 };
 323
 324 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 325 static struct regulator_init_data beagle_vsim = {
 326         .constraints = {
 327                 .min_uV                 = 1800000,
 328                 .max_uV                 = 3000000,
 329                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 330                                         | REGULATOR_MODE_STANDBY,
 331                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 332                                         | REGULATOR_CHANGE_MODE
 333                                         | REGULATOR_CHANGE_STATUS,
 334         },
 335         .num_consumer_supplies  = ARRAY_SIZE(beagle_vsim_supply),
 336         .consumer_supplies      = beagle_vsim_supply,
 337 };
 338
 339 static struct twl4030_platform_data beagle_twldata = {
 340         /* platform_data for children goes here */
 341         .gpio           = &beagle_gpio_data,
 342         .vmmc1          = &beagle_vmmc1,
 343         .vsim           = &beagle_vsim,
 344 };
 345
 346 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 347        {
 348                I2C_BOARD_INFO("eeprom", 0x50),
 349        },
 350 };
 351
 352 static int __init omap3_beagle_i2c_init(void)
 353 {
 354         omap3_pmic_get_config(&beagle_twldata,
 355                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
 356                         TWL_COMMON_PDATA_AUDIO,
 357                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 358
 359         beagle_twldata.vpll2->constraints.name = "VDVI";
 360
 361         omap3_pmic_init("twl4030", &beagle_twldata);
 362         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 363          * projector don't work reliably with 400kHz */
 364         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 365         return 0;
 366 }
 367
 368 static struct gpio_led gpio_leds[] = {
 369         {
 370                 .name                   = "beagleboard::usr0",
 371                 .default_trigger        = "heartbeat",
 372                 .gpio                   = 150,
 373         },
 374         {
 375                 .name                   = "beagleboard::usr1",
 376                 .default_trigger        = "mmc0",
 377                 .gpio                   = 149,
 378         },
 379         {
 380                 .name                   = "beagleboard::pmu_stat",
 381                 .gpio                   = -EINVAL,      /* gets replaced */
 382                 .active_low             = true,
 383         },
 384 };
 385
 386 static struct gpio_led_platform_data gpio_led_info = {
 387         .leds           = gpio_leds,
 388         .num_leds       = ARRAY_SIZE(gpio_leds),
 389 };
 390
 391 static struct platform_device leds_gpio = {
 392         .name   = "leds-gpio",
 393         .id     = -1,
 394         .dev    = {
 395                 .platform_data  = &gpio_led_info,
 396         },
 397 };
 398
 399 static struct gpio_keys_button gpio_buttons[] = {
 400         {
 401                 .code                   = BTN_EXTRA,
 402                 /* Dynamically assigned depending on board */
 403                 .gpio                   = -EINVAL,
 404                 .desc                   = "user",
 405                 .wakeup                 = 1,
 406         },
 407 };
 408
 409 static struct gpio_keys_platform_data gpio_key_info = {
 410         .buttons        = gpio_buttons,
 411         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 412 };
 413
 414 static struct platform_device keys_gpio = {
 415         .name   = "gpio-keys",
 416         .id     = -1,
 417         .dev    = {
 418                 .platform_data  = &gpio_key_info,
 419         },
 420 };
 421
 422 static struct platform_device madc_hwmon = {
 423         .name   = "twl4030_madc_hwmon",
 424         .id     = -1,
 425 };
 426
 427 static struct platform_device *omap3_beagle_devices[] __initdata = {
 428         &leds_gpio,
 429         &keys_gpio,
 430         &madc_hwmon,
 431 };
 432
 433 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 434
 435         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 436         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 437         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 438
 439         .phy_reset  = true,
 440         .reset_gpio_port[0]  = -EINVAL,
 441         .reset_gpio_port[1]  = 147,
 442         .reset_gpio_port[2]  = -EINVAL
 443 };
 444
 445 #ifdef CONFIG_OMAP_MUX
 446 static struct omap_board_mux board_mux[] __initdata = {
 447         { .reg_offset = OMAP_MUX_TERMINATOR },
 448 };
 449 #endif
 450
 451 static int __init beagle_opp_init(void)
 452 {
 453         int r = 0;
 454
 455         if (!machine_is_omap3_beagle())
 456                 return 0;
 457
 458         /* Initialize the omap3 opp table if not already created. */
 459         r = omap3_opp_init();
 460         if (IS_ERR_VALUE(r) && (r != -EEXIST)) {
 461                 pr_err("%s: opp default init failed\n", __func__);
 462                 return r;
 463         }
 464
 465         /* Custom OPP enabled for all xM versions */
 466         if (cpu_is_omap3630()) {
 467                 struct device *mpu_dev, *iva_dev;
 468
 469                 mpu_dev = get_cpu_device(0);
 470                 iva_dev = omap_device_get_by_hwmod_name("iva");
 471
 472                 if (IS_ERR(mpu_dev) || IS_ERR(iva_dev)) {
 473                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 474                                 __func__, mpu_dev, iva_dev);
 475                         return -ENODEV;
 476                 }
 477                 /* Enable MPU 1GHz and lower opps */
 478                 r = opp_enable(mpu_dev, 800000000);
 479                 /* TODO: MPU 1GHz needs SR and ABB */
 480
 481                 /* Enable IVA 800MHz and lower opps */
 482                 r |= opp_enable(iva_dev, 660000000);
 483                 /* TODO: DSP 800MHz needs SR and ABB */
 484                 if (r) {
 485                         pr_err("%s: failed to enable higher opp %d\n",
 486                                 __func__, r);
 487                         /*
 488                          * Cleanup - disable the higher freqs - we dont care
 489                          * about the results
 490                          */
 491                         opp_disable(mpu_dev, 800000000);
 492                         opp_disable(iva_dev, 660000000);
 493                 }
 494         }
 495         return 0;
 496 }
 497 device_initcall(beagle_opp_init);
 498
 499 static void __init omap3_beagle_init(void)
 500 {
 501         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 502         omap3_beagle_init_rev();
 503
 504         if (gpio_is_valid(beagle_config.mmc1_gpio_wp))
 505                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 506         mmc[0].caps = beagle_config.mmc_caps;
 507         omap_hsmmc_init(mmc);
 508
 509         omap3_beagle_i2c_init();
 510
 511         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 512
 513         platform_add_devices(omap3_beagle_devices,
 514                         ARRAY_SIZE(omap3_beagle_devices));
 515         if (gpio_is_valid(beagle_config.dvi_pd_gpio))
 516                 omap_mux_init_gpio(beagle_config.dvi_pd_gpio, OMAP_PIN_OUTPUT);
 517         omap_display_init(&beagle_dss_data);
 518         omap_serial_init();
 519         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 520                                   mt46h32m32lf6_sdrc_params);
 521
 522         usb_musb_init(NULL);
 523         usbhs_init(&usbhs_bdata);
 524         board_nand_init(omap3beagle_nand_partitions,
 525                         ARRAY_SIZE(omap3beagle_nand_partitions), NAND_CS,
 526                         NAND_BUSWIDTH_16, NULL);
 527         omap_twl4030_audio_init("omap3beagle");
 528
 529         /* Ensure msecure is mux'd to be able to set the RTC. */
 530         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 531
 532         /* Ensure SDRC pins are mux'd for self-refresh */
 533         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 534         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 535 }
 536
 537 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 538         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 539         .atag_offset    = 0x100,
 540         .reserve        = omap_reserve,
 541         .map_io         = omap3_map_io,
 542         .init_early     = omap3_init_early,
 543         .init_irq       = omap3_init_irq,
 544         .handle_irq     = omap3_intc_handle_irq,
 545         .init_machine   = omap3_beagle_init,
 546         .init_late      = omap3_init_late,
 547         .timer          = &omap3_secure_timer,
 548         .restart        = omap_prcm_restart,
 549 MACHINE_END