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 #include <linux/usb/phy.h>
  34
  35 #include <linux/regulator/machine.h>
  36 #include <linux/i2c/twl.h>
  37
  38 #include <asm/mach-types.h>
  39 #include <asm/mach/arch.h>
  40 #include <asm/mach/map.h>
  41 #include <asm/mach/flash.h>
  42
  43 #include <video/omapdss.h>
  44 #include <video/omap-panel-tfp410.h>
  45 #include <linux/platform_data/mtd-nand-omap2.h>
  46
  47 #include "common.h"
  48 #include "omap_device.h"
  49 #include "gpmc.h"
  50 #include "soc.h"
  51 #include "mux.h"
  52 #include "hsmmc.h"
  53 #include "pm.h"
  54 #include "board-flash.h"
  55 #include "common-board-devices.h"
  56
  57 #define NAND_CS 0
  58
  59 /*
  60  * OMAP3 Beagle revision
  61  * Run time detection of Beagle revision is done by reading GPIO.
  62  * GPIO ID -
  63  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  64  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  65  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  66  *      XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
  67  *      XMC = GPIO173, GPIO172, GPIO171: 0 1 0
  68  */
  69 enum {
  70         OMAP3BEAGLE_BOARD_UNKN = 0,
  71         OMAP3BEAGLE_BOARD_AXBX,
  72         OMAP3BEAGLE_BOARD_C1_3,
  73         OMAP3BEAGLE_BOARD_C4,
  74         OMAP3BEAGLE_BOARD_XM,
  75         OMAP3BEAGLE_BOARD_XMC,
  76 };
  77
  78 static u8 omap3_beagle_version;
  79
  80 /*
  81  * Board-specific configuration
  82  * Defaults to BeagleBoard-xMC
  83  */
  84 static struct {
  85         int mmc1_gpio_wp;
  86         int usb_pwr_level;
  87         int dvi_pd_gpio;
  88         int usr_button_gpio;
  89         int mmc_caps;
  90 } beagle_config = {
  91         .mmc1_gpio_wp = -EINVAL,
  92         .usb_pwr_level = GPIOF_OUT_INIT_LOW,
  93         .dvi_pd_gpio = -EINVAL,
  94         .usr_button_gpio = 4,
  95         .mmc_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
  96 };
  97
  98 static struct gpio omap3_beagle_rev_gpios[] __initdata = {
  99         { 171, GPIOF_IN, "rev_id_0"    },
 100         { 172, GPIOF_IN, "rev_id_1" },
 101         { 173, GPIOF_IN, "rev_id_2"    },
 102 };
 103
 104 static void __init omap3_beagle_init_rev(void)
 105 {
 106         int ret;
 107         u16 beagle_rev = 0;
 108
 109         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
 110         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
 111         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
 112
 113         ret = gpio_request_array(omap3_beagle_rev_gpios,
 114                                  ARRAY_SIZE(omap3_beagle_rev_gpios));
 115         if (ret < 0) {
 116                 printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 117                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 118                 return;
 119         }
 120
 121         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 122                         | (gpio_get_value(173) << 2);
 123
 124         gpio_free_array(omap3_beagle_rev_gpios,
 125                         ARRAY_SIZE(omap3_beagle_rev_gpios));
 126
 127         switch (beagle_rev) {
 128         case 7:
 129                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 130                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 131                 beagle_config.mmc1_gpio_wp = 29;
 132                 beagle_config.dvi_pd_gpio = 170;
 133                 beagle_config.usr_button_gpio = 7;
 134                 break;
 135         case 6:
 136                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 137                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 138                 beagle_config.mmc1_gpio_wp = 23;
 139                 beagle_config.dvi_pd_gpio = 170;
 140                 beagle_config.usr_button_gpio = 7;
 141                 break;
 142         case 5:
 143                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 144                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 145                 beagle_config.mmc1_gpio_wp = 23;
 146                 beagle_config.dvi_pd_gpio = 170;
 147                 beagle_config.usr_button_gpio = 7;
 148                 break;
 149         case 0:
 150                 printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
 151                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 152                 beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
 153                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 154                 break;
 155         case 2:
 156                 printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
 157                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
 158                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 159                 break;
 160         default:
 161                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 162                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 163         }
 164 }
 165
 166 static struct mtd_partition omap3beagle_nand_partitions[] = {
 167         /* All the partition sizes are listed in terms of NAND block size */
 168         {
 169                 .name           = "X-Loader",
 170                 .offset         = 0,
 171                 .size           = 4 * NAND_BLOCK_SIZE,
 172                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 173         },
 174         {
 175                 .name           = "U-Boot",
 176                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 177                 .size           = 15 * NAND_BLOCK_SIZE,
 178                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 179         },
 180         {
 181                 .name           = "U-Boot Env",
 182                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 183                 .size           = 1 * NAND_BLOCK_SIZE,
 184         },
 185         {
 186                 .name           = "Kernel",
 187                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 188                 .size           = 32 * NAND_BLOCK_SIZE,
 189         },
 190         {
 191                 .name           = "File System",
 192                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 193                 .size           = MTDPART_SIZ_FULL,
 194         },
 195 };
 196
 197 /* DSS */
 198
 199 static struct tfp410_platform_data dvi_panel = {
 200         .i2c_bus_num = 3,
 201         .power_down_gpio = -1,
 202 };
 203
 204 static struct omap_dss_device beagle_dvi_device = {
 205         .type = OMAP_DISPLAY_TYPE_DPI,
 206         .name = "dvi",
 207         .driver_name = "tfp410",
 208         .data = &dvi_panel,
 209         .phy.dpi.data_lines = 24,
 210 };
 211
 212 static struct omap_dss_device beagle_tv_device = {
 213         .name = "tv",
 214         .driver_name = "venc",
 215         .type = OMAP_DISPLAY_TYPE_VENC,
 216         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 217 };
 218
 219 static struct omap_dss_device *beagle_dss_devices[] = {
 220         &beagle_dvi_device,
 221         &beagle_tv_device,
 222 };
 223
 224 static struct omap_dss_board_info beagle_dss_data = {
 225         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 226         .devices = beagle_dss_devices,
 227         .default_device = &beagle_dvi_device,
 228 };
 229
 230 #include "sdram-micron-mt46h32m32lf-6.h"
 231
 232 static struct omap2_hsmmc_info mmc[] = {
 233         {
 234                 .mmc            = 1,
 235                 .caps           = MMC_CAP_4_BIT_DATA,
 236                 .gpio_wp        = -EINVAL,
 237                 .deferred       = true,
 238         },
 239         {}      /* Terminator */
 240 };
 241
 242 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 243         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 244 };
 245
 246 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 247         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 248 };
 249
 250 static struct gpio_led gpio_leds[];
 251
 252 static int beagle_twl_gpio_setup(struct device *dev,
 253                 unsigned gpio, unsigned ngpio)
 254 {
 255         int r;
 256
 257         mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
 258         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 259         mmc[0].gpio_cd = gpio + 0;
 260         omap_hsmmc_late_init(mmc);
 261
 262         /*
 263          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 264          * high / others active low)
 265          * DVI reset GPIO is different between beagle revisions
 266          */
 267         /* Valid for all -xM revisions */
 268         if (cpu_is_omap3630()) {
 269                 /*
 270                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 271                  * gpio + 2 control varies depending on the board rev as below:
 272                  * P7/P8 revisions(prototype): Camera EN
 273                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 274                  */
 275                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 276                                      "nDVI_PWR_EN");
 277                 if (r)
 278                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 279                                 __func__);
 280
 281                 beagle_config.dvi_pd_gpio = gpio + 2;
 282
 283         } else {
 284                 /*
 285                  * REVISIT: need ehci-omap hooks for external VBUS
 286                  * power switch and overcurrent detect
 287                  */
 288                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 289                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 290         }
 291         dvi_panel.power_down_gpio = beagle_config.dvi_pd_gpio;
 292
 293         gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
 294                         "nEN_USB_PWR");
 295
 296         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 297         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 298
 299         return 0;
 300 }
 301
 302 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 303         .use_leds       = true,
 304         .pullups        = BIT(1),
 305         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 306                                 | BIT(15) | BIT(16) | BIT(17),
 307         .setup          = beagle_twl_gpio_setup,
 308 };
 309
 310 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 311 static struct regulator_init_data beagle_vmmc1 = {
 312         .constraints = {
 313                 .min_uV                 = 1850000,
 314                 .max_uV                 = 3150000,
 315                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 316                                         | REGULATOR_MODE_STANDBY,
 317                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 318                                         | REGULATOR_CHANGE_MODE
 319                                         | REGULATOR_CHANGE_STATUS,
 320         },
 321         .num_consumer_supplies  = ARRAY_SIZE(beagle_vmmc1_supply),
 322         .consumer_supplies      = beagle_vmmc1_supply,
 323 };
 324
 325 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 326 static struct regulator_init_data beagle_vsim = {
 327         .constraints = {
 328                 .min_uV                 = 1800000,
 329                 .max_uV                 = 3000000,
 330                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 331                                         | REGULATOR_MODE_STANDBY,
 332                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 333                                         | REGULATOR_CHANGE_MODE
 334                                         | REGULATOR_CHANGE_STATUS,
 335         },
 336         .num_consumer_supplies  = ARRAY_SIZE(beagle_vsim_supply),
 337         .consumer_supplies      = beagle_vsim_supply,
 338 };
 339
 340 static struct twl4030_platform_data beagle_twldata = {
 341         /* platform_data for children goes here */
 342         .gpio           = &beagle_gpio_data,
 343         .vmmc1          = &beagle_vmmc1,
 344         .vsim           = &beagle_vsim,
 345 };
 346
 347 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 348        {
 349                I2C_BOARD_INFO("eeprom", 0x50),
 350        },
 351 };
 352
 353 static int __init omap3_beagle_i2c_init(void)
 354 {
 355         omap3_pmic_get_config(&beagle_twldata,
 356                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
 357                         TWL_COMMON_PDATA_AUDIO,
 358                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 359
 360         beagle_twldata.vpll2->constraints.name = "VDVI";
 361
 362         omap3_pmic_init("twl4030", &beagle_twldata);
 363         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 364          * projector don't work reliably with 400kHz */
 365         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 366         return 0;
 367 }
 368
 369 static struct gpio_led gpio_leds[] = {
 370         {
 371                 .name                   = "beagleboard::usr0",
 372                 .default_trigger        = "heartbeat",
 373                 .gpio                   = 150,
 374         },
 375         {
 376                 .name                   = "beagleboard::usr1",
 377                 .default_trigger        = "mmc0",
 378                 .gpio                   = 149,
 379         },
 380         {
 381                 .name                   = "beagleboard::pmu_stat",
 382                 .gpio                   = -EINVAL,      /* gets replaced */
 383                 .active_low             = true,
 384         },
 385 };
 386
 387 static struct gpio_led_platform_data gpio_led_info = {
 388         .leds           = gpio_leds,
 389         .num_leds       = ARRAY_SIZE(gpio_leds),
 390 };
 391
 392 static struct platform_device leds_gpio = {
 393         .name   = "leds-gpio",
 394         .id     = -1,
 395         .dev    = {
 396                 .platform_data  = &gpio_led_info,
 397         },
 398 };
 399
 400 static struct gpio_keys_button gpio_buttons[] = {
 401         {
 402                 .code                   = BTN_EXTRA,
 403                 /* Dynamically assigned depending on board */
 404                 .gpio                   = -EINVAL,
 405                 .desc                   = "user",
 406                 .wakeup                 = 1,
 407         },
 408 };
 409
 410 static struct gpio_keys_platform_data gpio_key_info = {
 411         .buttons        = gpio_buttons,
 412         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 413 };
 414
 415 static struct platform_device keys_gpio = {
 416         .name   = "gpio-keys",
 417         .id     = -1,
 418         .dev    = {
 419                 .platform_data  = &gpio_key_info,
 420         },
 421 };
 422
 423 static struct platform_device madc_hwmon = {
 424         .name   = "twl4030_madc_hwmon",
 425         .id     = -1,
 426 };
 427
 428 static struct platform_device *omap3_beagle_devices[] __initdata = {
 429         &leds_gpio,
 430         &keys_gpio,
 431         &madc_hwmon,
 432 };
 433
 434 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 435
 436         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 437         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 438         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 439
 440         .phy_reset  = true,
 441         .reset_gpio_port[0]  = -EINVAL,
 442         .reset_gpio_port[1]  = 147,
 443         .reset_gpio_port[2]  = -EINVAL
 444 };
 445
 446 #ifdef CONFIG_OMAP_MUX
 447 static struct omap_board_mux board_mux[] __initdata = {
 448         { .reg_offset = OMAP_MUX_TERMINATOR },
 449 };
 450 #endif
 451
 452 static int __init beagle_opp_init(void)
 453 {
 454         int r = 0;
 455
 456         if (!machine_is_omap3_beagle())
 457                 return 0;
 458
 459         /* Initialize the omap3 opp table if not already created. */
 460         r = omap3_opp_init();
 461         if (IS_ERR_VALUE(r) && (r != -EEXIST)) {
 462                 pr_err("%s: opp default init failed\n", __func__);
 463                 return r;
 464         }
 465
 466         /* Custom OPP enabled for all xM versions */
 467         if (cpu_is_omap3630()) {
 468                 struct device *mpu_dev, *iva_dev;
 469
 470                 mpu_dev = get_cpu_device(0);
 471                 iva_dev = omap_device_get_by_hwmod_name("iva");
 472
 473                 if (IS_ERR(mpu_dev) || IS_ERR(iva_dev)) {
 474                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 475                                 __func__, mpu_dev, iva_dev);
 476                         return -ENODEV;
 477                 }
 478                 /* Enable MPU 1GHz and lower opps */
 479                 r = opp_enable(mpu_dev, 800000000);
 480                 /* TODO: MPU 1GHz needs SR and ABB */
 481
 482                 /* Enable IVA 800MHz and lower opps */
 483                 r |= opp_enable(iva_dev, 660000000);
 484                 /* TODO: DSP 800MHz needs SR and ABB */
 485                 if (r) {
 486                         pr_err("%s: failed to enable higher opp %d\n",
 487                                 __func__, r);
 488                         /*
 489                          * Cleanup - disable the higher freqs - we dont care
 490                          * about the results
 491                          */
 492                         opp_disable(mpu_dev, 800000000);
 493                         opp_disable(iva_dev, 660000000);
 494                 }
 495         }
 496         return 0;
 497 }
 498 omap_device_initcall(beagle_opp_init);
 499
 500 static void __init omap3_beagle_init(void)
 501 {
 502         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 503         omap3_beagle_init_rev();
 504
 505         if (gpio_is_valid(beagle_config.mmc1_gpio_wp))
 506                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 507         mmc[0].caps = beagle_config.mmc_caps;
 508         omap_hsmmc_init(mmc);
 509
 510         omap3_beagle_i2c_init();
 511
 512         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 513
 514         platform_add_devices(omap3_beagle_devices,
 515                         ARRAY_SIZE(omap3_beagle_devices));
 516         if (gpio_is_valid(beagle_config.dvi_pd_gpio))
 517                 omap_mux_init_gpio(beagle_config.dvi_pd_gpio, OMAP_PIN_OUTPUT);
 518         omap_display_init(&beagle_dss_data);
 519         omap_serial_init();
 520         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 521                                   mt46h32m32lf6_sdrc_params);
 522
 523         usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
 524         usb_musb_init(NULL);
 525         usbhs_init(&usbhs_bdata);
 526         board_nand_init(omap3beagle_nand_partitions,
 527                         ARRAY_SIZE(omap3beagle_nand_partitions), NAND_CS,
 528                         NAND_BUSWIDTH_16, NULL);
 529         omap_twl4030_audio_init("omap3beagle");
 530
 531         /* Ensure msecure is mux'd to be able to set the RTC. */
 532         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 533
 534         /* Ensure SDRC pins are mux'd for self-refresh */
 535         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 536         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 537 }
 538
 539 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 540         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 541         .atag_offset    = 0x100,
 542         .reserve        = omap_reserve,
 543         .map_io         = omap3_map_io,
 544         .init_early     = omap3_init_early,
 545         .init_irq       = omap3_init_irq,
 546         .handle_irq     = omap3_intc_handle_irq,
 547         .init_machine   = omap3_beagle_init,
 548         .init_late      = omap3_init_late,
 549         .init_time      = omap3_secure_sync32k_timer_init,
 550         .restart        = omap3xxx_restart,
 551 MACHINE_END