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