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