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         .gpio_base      = OMAP_MAX_GPIO_LINES,
 300         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 301         .irq_end        = TWL4030_GPIO_IRQ_END,
 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 void __init beagle_opp_init(void)
 452 {
 453         int r = 0;
 454
 455         /* Initialize the omap3 opp table */
 456         if (omap3_opp_init()) {
 457                 pr_err("%s: opp default init failed\n", __func__);
 458                 return;
 459         }
 460
 461         /* Custom OPP enabled for all xM versions */
 462         if (cpu_is_omap3630()) {
 463                 struct device *mpu_dev, *iva_dev;
 464
 465                 mpu_dev = omap_device_get_by_hwmod_name("mpu");
 466                 iva_dev = omap_device_get_by_hwmod_name("iva");
 467
 468                 if (!mpu_dev || !iva_dev) {
 469                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 470                                 __func__, mpu_dev, iva_dev);
 471                         return;
 472                 }
 473                 /* Enable MPU 1GHz and lower opps */
 474                 r = opp_enable(mpu_dev, 800000000);
 475                 /* TODO: MPU 1GHz needs SR and ABB */
 476
 477                 /* Enable IVA 800MHz and lower opps */
 478                 r |= opp_enable(iva_dev, 660000000);
 479                 /* TODO: DSP 800MHz needs SR and ABB */
 480                 if (r) {
 481                         pr_err("%s: failed to enable higher opp %d\n",
 482                                 __func__, r);
 483                         /*
 484                          * Cleanup - disable the higher freqs - we dont care
 485                          * about the results
 486                          */
 487                         opp_disable(mpu_dev, 800000000);
 488                         opp_disable(iva_dev, 660000000);
 489                 }
 490         }
 491         return;
 492 }
 493
 494 static void __init omap3_beagle_init(void)
 495 {
 496         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 497         omap3_beagle_init_rev();
 498
 499         if (gpio_is_valid(beagle_config.mmc1_gpio_wp))
 500                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 501         mmc[0].caps = beagle_config.mmc_caps;
 502         omap_hsmmc_init(mmc);
 503
 504         omap3_beagle_i2c_init();
 505
 506         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 507
 508         platform_add_devices(omap3_beagle_devices,
 509                         ARRAY_SIZE(omap3_beagle_devices));
 510         if (gpio_is_valid(beagle_config.dvi_pd_gpio))
 511                 omap_mux_init_gpio(beagle_config.dvi_pd_gpio, OMAP_PIN_OUTPUT);
 512         omap_display_init(&beagle_dss_data);
 513         omap_serial_init();
 514         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 515                                   mt46h32m32lf6_sdrc_params);
 516
 517         usb_musb_init(NULL);
 518         usbhs_init(&usbhs_bdata);
 519         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
 520                              ARRAY_SIZE(omap3beagle_nand_partitions));
 521
 522         /* Ensure msecure is mux'd to be able to set the RTC. */
 523         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 524
 525         /* Ensure SDRC pins are mux'd for self-refresh */
 526         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 527         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 528
 529         beagle_opp_init();
 530 }
 531
 532 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 533         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 534         .atag_offset    = 0x100,
 535         .reserve        = omap_reserve,
 536         .map_io         = omap3_map_io,
 537         .init_early     = omap3_init_early,
 538         .init_irq       = omap3_init_irq,
 539         .handle_irq     = omap3_intc_handle_irq,
 540         .init_machine   = omap3_beagle_init,
 541         .init_late      = omap3_init_late,
 542         .timer          = &omap3_secure_timer,
 543         .restart        = omap_prcm_restart,
 544 MACHINE_END