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