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 <plat/board.h>
  43 #include "common.h"
  44 #include <video/omapdss.h>
  45 #include <video/omap-panel-tfp410.h>
  46 #include <plat/gpmc.h>
  47 #include <plat/nand.h>
  48 #include <plat/usb.h>
  49 #include <plat/omap_device.h>
  50
  51 #include "mux.h"
  52 #include "hsmmc.h"
  53 #include "pm.h"
  54 #include "common-board-devices.h"
  55
  56 /*
  57  * OMAP3 Beagle revision
  58  * Run time detection of Beagle revision is done by reading GPIO.
  59  * GPIO ID -
  60  *      AXBX    = GPIO173, GPIO172, GPIO171: 1 1 1
  61  *      C1_3    = GPIO173, GPIO172, GPIO171: 1 1 0
  62  *      C4      = GPIO173, GPIO172, GPIO171: 1 0 1
  63  *      XMA/XMB = GPIO173, GPIO172, GPIO171: 0 0 0
  64  *      XMC = GPIO173, GPIO172, GPIO171: 0 1 0
  65  */
  66 enum {
  67         OMAP3BEAGLE_BOARD_UNKN = 0,
  68         OMAP3BEAGLE_BOARD_AXBX,
  69         OMAP3BEAGLE_BOARD_C1_3,
  70         OMAP3BEAGLE_BOARD_C4,
  71         OMAP3BEAGLE_BOARD_XM,
  72         OMAP3BEAGLE_BOARD_XMC,
  73 };
  74
  75 static u8 omap3_beagle_version;
  76
  77 /*
  78  * Board-specific configuration
  79  * Defaults to BeagleBoard-xMC
  80  */
  81 static struct {
  82         int mmc1_gpio_wp;
  83         int usb_pwr_level;
  84         int dvi_pd_gpio;
  85         int usr_button_gpio;
  86         int mmc_caps;
  87 } beagle_config = {
  88         .mmc1_gpio_wp = -EINVAL,
  89         .usb_pwr_level = GPIOF_OUT_INIT_LOW,
  90         .dvi_pd_gpio = -EINVAL,
  91         .usr_button_gpio = 4,
  92         .mmc_caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
  93 };
  94
  95 static struct gpio omap3_beagle_rev_gpios[] __initdata = {
  96         { 171, GPIOF_IN, "rev_id_0"    },
  97         { 172, GPIOF_IN, "rev_id_1" },
  98         { 173, GPIOF_IN, "rev_id_2"    },
  99 };
 100
 101 static void __init omap3_beagle_init_rev(void)
 102 {
 103         int ret;
 104         u16 beagle_rev = 0;
 105
 106         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
 107         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
 108         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
 109
 110         ret = gpio_request_array(omap3_beagle_rev_gpios,
 111                                  ARRAY_SIZE(omap3_beagle_rev_gpios));
 112         if (ret < 0) {
 113                 printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
 114                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 115                 return;
 116         }
 117
 118         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 119                         | (gpio_get_value(173) << 2);
 120
 121         gpio_free_array(omap3_beagle_rev_gpios,
 122                         ARRAY_SIZE(omap3_beagle_rev_gpios));
 123
 124         switch (beagle_rev) {
 125         case 7:
 126                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 127                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 128                 beagle_config.mmc1_gpio_wp = 29;
 129                 beagle_config.dvi_pd_gpio = 170;
 130                 beagle_config.usr_button_gpio = 7;
 131                 break;
 132         case 6:
 133                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 134                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 135                 beagle_config.mmc1_gpio_wp = 23;
 136                 beagle_config.dvi_pd_gpio = 170;
 137                 beagle_config.usr_button_gpio = 7;
 138                 break;
 139         case 5:
 140                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 141                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 142                 beagle_config.mmc1_gpio_wp = 23;
 143                 beagle_config.dvi_pd_gpio = 170;
 144                 beagle_config.usr_button_gpio = 7;
 145                 break;
 146         case 0:
 147                 printk(KERN_INFO "OMAP3 Beagle Rev: xM Ax/Bx\n");
 148                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 149                 beagle_config.usb_pwr_level = GPIOF_OUT_INIT_HIGH;
 150                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 151                 break;
 152         case 2:
 153                 printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
 154                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
 155                 beagle_config.mmc_caps &= ~MMC_CAP_8_BIT_DATA;
 156                 break;
 157         default:
 158                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 159                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 160         }
 161 }
 162
 163 static struct mtd_partition omap3beagle_nand_partitions[] = {
 164         /* All the partition sizes are listed in terms of NAND block size */
 165         {
 166                 .name           = "X-Loader",
 167                 .offset         = 0,
 168                 .size           = 4 * NAND_BLOCK_SIZE,
 169                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 170         },
 171         {
 172                 .name           = "U-Boot",
 173                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 174                 .size           = 15 * NAND_BLOCK_SIZE,
 175                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 176         },
 177         {
 178                 .name           = "U-Boot Env",
 179                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 180                 .size           = 1 * NAND_BLOCK_SIZE,
 181         },
 182         {
 183                 .name           = "Kernel",
 184                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 185                 .size           = 32 * NAND_BLOCK_SIZE,
 186         },
 187         {
 188                 .name           = "File System",
 189                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 190                 .size           = MTDPART_SIZ_FULL,
 191         },
 192 };
 193
 194 /* DSS */
 195
 196 static struct tfp410_platform_data dvi_panel = {
 197         .i2c_bus_num = 3,
 198         .power_down_gpio = -1,
 199 };
 200
 201 static struct omap_dss_device beagle_dvi_device = {
 202         .type = OMAP_DISPLAY_TYPE_DPI,
 203         .name = "dvi",
 204         .driver_name = "tfp410",
 205         .data = &dvi_panel,
 206         .phy.dpi.data_lines = 24,
 207 };
 208
 209 static struct omap_dss_device beagle_tv_device = {
 210         .name = "tv",
 211         .driver_name = "venc",
 212         .type = OMAP_DISPLAY_TYPE_VENC,
 213         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 214 };
 215
 216 static struct omap_dss_device *beagle_dss_devices[] = {
 217         &beagle_dvi_device,
 218         &beagle_tv_device,
 219 };
 220
 221 static struct omap_dss_board_info beagle_dss_data = {
 222         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 223         .devices = beagle_dss_devices,
 224         .default_device = &beagle_dvi_device,
 225 };
 226
 227 #include "sdram-micron-mt46h32m32lf-6.h"
 228
 229 static struct omap2_hsmmc_info mmc[] = {
 230         {
 231                 .mmc            = 1,
 232                 .caps           = MMC_CAP_4_BIT_DATA,
 233                 .gpio_wp        = -EINVAL,
 234                 .deferred       = true,
 235         },
 236         {}      /* Terminator */
 237 };
 238
 239 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 240         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 241 };
 242
 243 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 244         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 245 };
 246
 247 static struct gpio_led gpio_leds[];
 248
 249 static int beagle_twl_gpio_setup(struct device *dev,
 250                 unsigned gpio, unsigned ngpio)
 251 {
 252         int r;
 253
 254         mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
 255         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 256         mmc[0].gpio_cd = gpio + 0;
 257         omap_hsmmc_late_init(mmc);
 258
 259         /*
 260          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 261          * high / others active low)
 262          * DVI reset GPIO is different between beagle revisions
 263          */
 264         /* Valid for all -xM revisions */
 265         if (cpu_is_omap3630()) {
 266                 /*
 267                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 268                  * gpio + 2 control varies depending on the board rev as below:
 269                  * P7/P8 revisions(prototype): Camera EN
 270                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 271                  */
 272                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 273                                      "nDVI_PWR_EN");
 274                 if (r)
 275                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 276                                 __func__);
 277
 278                 beagle_config.dvi_pd_gpio = gpio + 2;
 279
 280         } else {
 281                 /*
 282                  * REVISIT: need ehci-omap hooks for external VBUS
 283                  * power switch and overcurrent detect
 284                  */
 285                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 286                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 287         }
 288         dvi_panel.power_down_gpio = beagle_config.dvi_pd_gpio;
 289
 290         gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
 291                         "nEN_USB_PWR");
 292
 293         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 294         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 295
 296         return 0;
 297 }
 298
 299 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 300         .gpio_base      = OMAP_MAX_GPIO_LINES,
 301         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 302         .irq_end        = TWL4030_GPIO_IRQ_END,
 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 void __init beagle_opp_init(void)
 453 {
 454         int r = 0;
 455
 456         /* Initialize the omap3 opp table */
 457         if (omap3_opp_init()) {
 458                 pr_err("%s: opp default init failed\n", __func__);
 459                 return;
 460         }
 461
 462         /* Custom OPP enabled for all xM versions */
 463         if (cpu_is_omap3630()) {
 464                 struct device *mpu_dev, *iva_dev;
 465
 466                 mpu_dev = omap_device_get_by_hwmod_name("mpu");
 467                 iva_dev = omap_device_get_by_hwmod_name("iva");
 468
 469                 if (!mpu_dev || !iva_dev) {
 470                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 471                                 __func__, mpu_dev, iva_dev);
 472                         return;
 473                 }
 474                 /* Enable MPU 1GHz and lower opps */
 475                 r = opp_enable(mpu_dev, 800000000);
 476                 /* TODO: MPU 1GHz needs SR and ABB */
 477
 478                 /* Enable IVA 800MHz and lower opps */
 479                 r |= opp_enable(iva_dev, 660000000);
 480                 /* TODO: DSP 800MHz needs SR and ABB */
 481                 if (r) {
 482                         pr_err("%s: failed to enable higher opp %d\n",
 483                                 __func__, r);
 484                         /*
 485                          * Cleanup - disable the higher freqs - we dont care
 486                          * about the results
 487                          */
 488                         opp_disable(mpu_dev, 800000000);
 489                         opp_disable(iva_dev, 660000000);
 490                 }
 491         }
 492         return;
 493 }
 494
 495 static void __init omap3_beagle_init(void)
 496 {
 497         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 498         omap3_beagle_init_rev();
 499
 500         if (gpio_is_valid(beagle_config.mmc1_gpio_wp))
 501                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 502         mmc[0].caps = beagle_config.mmc_caps;
 503         omap_hsmmc_init(mmc);
 504
 505         omap3_beagle_i2c_init();
 506
 507         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 508
 509         platform_add_devices(omap3_beagle_devices,
 510                         ARRAY_SIZE(omap3_beagle_devices));
 511         if (gpio_is_valid(beagle_config.dvi_pd_gpio))
 512                 omap_mux_init_gpio(beagle_config.dvi_pd_gpio, OMAP_PIN_OUTPUT);
 513         omap_display_init(&beagle_dss_data);
 514         omap_serial_init();
 515         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 516                                   mt46h32m32lf6_sdrc_params);
 517
 518         usb_musb_init(NULL);
 519         usbhs_init(&usbhs_bdata);
 520         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
 521                              ARRAY_SIZE(omap3beagle_nand_partitions));
 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