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-dvi.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 reset_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         .reset_gpio = 129,
  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.reset_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.reset_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.reset_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 int beagle_enable_dvi(struct omap_dss_device *dssdev)
 197 {
 198         if (gpio_is_valid(dssdev->reset_gpio))
 199                 gpio_set_value(dssdev->reset_gpio, 1);
 200
 201         return 0;
 202 }
 203
 204 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
 205 {
 206         if (gpio_is_valid(dssdev->reset_gpio))
 207                 gpio_set_value(dssdev->reset_gpio, 0);
 208 }
 209
 210 static struct panel_dvi_platform_data dvi_panel = {
 211         .platform_enable = beagle_enable_dvi,
 212         .platform_disable = beagle_disable_dvi,
 213         .i2c_bus_num = 3,
 214 };
 215
 216 static struct omap_dss_device beagle_dvi_device = {
 217         .type = OMAP_DISPLAY_TYPE_DPI,
 218         .name = "dvi",
 219         .driver_name = "dvi",
 220         .data = &dvi_panel,
 221         .phy.dpi.data_lines = 24,
 222         .reset_gpio = -EINVAL,
 223 };
 224
 225 static struct omap_dss_device beagle_tv_device = {
 226         .name = "tv",
 227         .driver_name = "venc",
 228         .type = OMAP_DISPLAY_TYPE_VENC,
 229         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 230 };
 231
 232 static struct omap_dss_device *beagle_dss_devices[] = {
 233         &beagle_dvi_device,
 234         &beagle_tv_device,
 235 };
 236
 237 static struct omap_dss_board_info beagle_dss_data = {
 238         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 239         .devices = beagle_dss_devices,
 240         .default_device = &beagle_dvi_device,
 241 };
 242
 243 static void __init beagle_display_init(void)
 244 {
 245         int r;
 246
 247         r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
 248                              "DVI reset");
 249         if (r < 0)
 250                 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
 251 }
 252
 253 #include "sdram-micron-mt46h32m32lf-6.h"
 254
 255 static struct omap2_hsmmc_info mmc[] = {
 256         {
 257                 .mmc            = 1,
 258                 .caps           = MMC_CAP_4_BIT_DATA,
 259                 .gpio_wp        = -EINVAL,
 260                 .deferred       = true,
 261         },
 262         {}      /* Terminator */
 263 };
 264
 265 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 266         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 267 };
 268
 269 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 270         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 271 };
 272
 273 static struct gpio_led gpio_leds[];
 274
 275 static int beagle_twl_gpio_setup(struct device *dev,
 276                 unsigned gpio, unsigned ngpio)
 277 {
 278         int r;
 279
 280         mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
 281         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 282         mmc[0].gpio_cd = gpio + 0;
 283         omap_hsmmc_late_init(mmc);
 284
 285         /*
 286          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 287          * high / others active low)
 288          * DVI reset GPIO is different between beagle revisions
 289          */
 290         /* Valid for all -xM revisions */
 291         if (cpu_is_omap3630()) {
 292                 /*
 293                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 294                  * gpio + 2 control varies depending on the board rev as below:
 295                  * P7/P8 revisions(prototype): Camera EN
 296                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 297                  */
 298                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 299                                      "nDVI_PWR_EN");
 300                 if (r)
 301                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 302                                 __func__);
 303                 r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
 304                                      "DVI_LDO_EN");
 305                 if (r)
 306                         pr_err("%s: unable to configure DVI_LDO_EN\n",
 307                                 __func__);
 308         } else {
 309                 /*
 310                  * REVISIT: need ehci-omap hooks for external VBUS
 311                  * power switch and overcurrent detect
 312                  */
 313                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 314                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 315         }
 316         beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;
 317
 318         gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
 319                         "nEN_USB_PWR");
 320
 321         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 322         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 323
 324         return 0;
 325 }
 326
 327 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 328         .gpio_base      = OMAP_MAX_GPIO_LINES,
 329         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 330         .irq_end        = TWL4030_GPIO_IRQ_END,
 331         .use_leds       = true,
 332         .pullups        = BIT(1),
 333         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 334                                 | BIT(15) | BIT(16) | BIT(17),
 335         .setup          = beagle_twl_gpio_setup,
 336 };
 337
 338 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 339 static struct regulator_init_data beagle_vmmc1 = {
 340         .constraints = {
 341                 .min_uV                 = 1850000,
 342                 .max_uV                 = 3150000,
 343                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 344                                         | REGULATOR_MODE_STANDBY,
 345                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 346                                         | REGULATOR_CHANGE_MODE
 347                                         | REGULATOR_CHANGE_STATUS,
 348         },
 349         .num_consumer_supplies  = ARRAY_SIZE(beagle_vmmc1_supply),
 350         .consumer_supplies      = beagle_vmmc1_supply,
 351 };
 352
 353 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 354 static struct regulator_init_data beagle_vsim = {
 355         .constraints = {
 356                 .min_uV                 = 1800000,
 357                 .max_uV                 = 3000000,
 358                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 359                                         | REGULATOR_MODE_STANDBY,
 360                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 361                                         | REGULATOR_CHANGE_MODE
 362                                         | REGULATOR_CHANGE_STATUS,
 363         },
 364         .num_consumer_supplies  = ARRAY_SIZE(beagle_vsim_supply),
 365         .consumer_supplies      = beagle_vsim_supply,
 366 };
 367
 368 static struct twl4030_platform_data beagle_twldata = {
 369         /* platform_data for children goes here */
 370         .gpio           = &beagle_gpio_data,
 371         .vmmc1          = &beagle_vmmc1,
 372         .vsim           = &beagle_vsim,
 373 };
 374
 375 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 376        {
 377                I2C_BOARD_INFO("eeprom", 0x50),
 378        },
 379 };
 380
 381 static int __init omap3_beagle_i2c_init(void)
 382 {
 383         omap3_pmic_get_config(&beagle_twldata,
 384                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
 385                         TWL_COMMON_PDATA_AUDIO,
 386                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 387
 388         beagle_twldata.vpll2->constraints.name = "VDVI";
 389
 390         omap3_pmic_init("twl4030", &beagle_twldata);
 391         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 392          * projector don't work reliably with 400kHz */
 393         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 394         return 0;
 395 }
 396
 397 static struct gpio_led gpio_leds[] = {
 398         {
 399                 .name                   = "beagleboard::usr0",
 400                 .default_trigger        = "heartbeat",
 401                 .gpio                   = 150,
 402         },
 403         {
 404                 .name                   = "beagleboard::usr1",
 405                 .default_trigger        = "mmc0",
 406                 .gpio                   = 149,
 407         },
 408         {
 409                 .name                   = "beagleboard::pmu_stat",
 410                 .gpio                   = -EINVAL,      /* gets replaced */
 411                 .active_low             = true,
 412         },
 413 };
 414
 415 static struct gpio_led_platform_data gpio_led_info = {
 416         .leds           = gpio_leds,
 417         .num_leds       = ARRAY_SIZE(gpio_leds),
 418 };
 419
 420 static struct platform_device leds_gpio = {
 421         .name   = "leds-gpio",
 422         .id     = -1,
 423         .dev    = {
 424                 .platform_data  = &gpio_led_info,
 425         },
 426 };
 427
 428 static struct gpio_keys_button gpio_buttons[] = {
 429         {
 430                 .code                   = BTN_EXTRA,
 431                 /* Dynamically assigned depending on board */
 432                 .gpio                   = -EINVAL,
 433                 .desc                   = "user",
 434                 .wakeup                 = 1,
 435         },
 436 };
 437
 438 static struct gpio_keys_platform_data gpio_key_info = {
 439         .buttons        = gpio_buttons,
 440         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 441 };
 442
 443 static struct platform_device keys_gpio = {
 444         .name   = "gpio-keys",
 445         .id     = -1,
 446         .dev    = {
 447                 .platform_data  = &gpio_key_info,
 448         },
 449 };
 450
 451 static struct platform_device madc_hwmon = {
 452         .name   = "twl4030_madc_hwmon",
 453         .id     = -1,
 454 };
 455
 456 static struct platform_device *omap3_beagle_devices[] __initdata = {
 457         &leds_gpio,
 458         &keys_gpio,
 459         &madc_hwmon,
 460 };
 461
 462 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 463
 464         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 465         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 466         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 467
 468         .phy_reset  = true,
 469         .reset_gpio_port[0]  = -EINVAL,
 470         .reset_gpio_port[1]  = 147,
 471         .reset_gpio_port[2]  = -EINVAL
 472 };
 473
 474 #ifdef CONFIG_OMAP_MUX
 475 static struct omap_board_mux board_mux[] __initdata = {
 476         { .reg_offset = OMAP_MUX_TERMINATOR },
 477 };
 478 #endif
 479
 480 static void __init beagle_opp_init(void)
 481 {
 482         int r = 0;
 483
 484         /* Initialize the omap3 opp table */
 485         if (omap3_opp_init()) {
 486                 pr_err("%s: opp default init failed\n", __func__);
 487                 return;
 488         }
 489
 490         /* Custom OPP enabled for all xM versions */
 491         if (cpu_is_omap3630()) {
 492                 struct device *mpu_dev, *iva_dev;
 493
 494                 mpu_dev = omap_device_get_by_hwmod_name("mpu");
 495                 iva_dev = omap_device_get_by_hwmod_name("iva");
 496
 497                 if (!mpu_dev || !iva_dev) {
 498                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 499                                 __func__, mpu_dev, iva_dev);
 500                         return;
 501                 }
 502                 /* Enable MPU 1GHz and lower opps */
 503                 r = opp_enable(mpu_dev, 800000000);
 504                 /* TODO: MPU 1GHz needs SR and ABB */
 505
 506                 /* Enable IVA 800MHz and lower opps */
 507                 r |= opp_enable(iva_dev, 660000000);
 508                 /* TODO: DSP 800MHz needs SR and ABB */
 509                 if (r) {
 510                         pr_err("%s: failed to enable higher opp %d\n",
 511                                 __func__, r);
 512                         /*
 513                          * Cleanup - disable the higher freqs - we dont care
 514                          * about the results
 515                          */
 516                         opp_disable(mpu_dev, 800000000);
 517                         opp_disable(iva_dev, 660000000);
 518                 }
 519         }
 520         return;
 521 }
 522
 523 static void __init omap3_beagle_init(void)
 524 {
 525         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 526         omap3_beagle_init_rev();
 527
 528         if (beagle_config.mmc1_gpio_wp != -EINVAL)
 529                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 530         mmc[0].caps = beagle_config.mmc_caps;
 531         omap_hsmmc_init(mmc);
 532
 533         omap3_beagle_i2c_init();
 534
 535         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 536
 537         platform_add_devices(omap3_beagle_devices,
 538                         ARRAY_SIZE(omap3_beagle_devices));
 539         omap_display_init(&beagle_dss_data);
 540         omap_serial_init();
 541         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
 542                                   mt46h32m32lf6_sdrc_params);
 543
 544         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 545         /* REVISIT leave DVI powered down until it's needed ... */
 546         gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 547
 548         usb_musb_init(NULL);
 549         usbhs_init(&usbhs_bdata);
 550         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
 551                              ARRAY_SIZE(omap3beagle_nand_partitions));
 552
 553         /* Ensure msecure is mux'd to be able to set the RTC. */
 554         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 555
 556         /* Ensure SDRC pins are mux'd for self-refresh */
 557         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 558         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 559
 560         beagle_display_init();
 561         beagle_opp_init();
 562 }
 563
 564 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 565         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 566         .atag_offset    = 0x100,
 567         .reserve        = omap_reserve,
 568         .map_io         = omap3_map_io,
 569         .init_early     = omap3_init_early,
 570         .init_irq       = omap3_init_irq,
 571         .handle_irq     = omap3_intc_handle_irq,
 572         .init_machine   = omap3_beagle_init,
 573         .timer          = &omap3_secure_timer,
 574         .restart        = omap_prcm_restart,
 575 MACHINE_END