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 <plat/common.h>
  44 #include <video/omapdss.h>
  45 #include <video/omap-panel-generic-dpi.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 } beagle_config = {
  87         .mmc1_gpio_wp = -EINVAL,
  88         .usb_pwr_level = GPIOF_OUT_INIT_LOW,
  89         .reset_gpio = 129,
  90         .usr_button_gpio = 4,
  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.reset_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.reset_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.reset_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                 break;
 149         case 2:
 150                 printk(KERN_INFO "OMAP3 Beagle Rev: xM C\n");
 151                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XMC;
 152                 break;
 153         default:
 154                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 155                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 156         }
 157 }
 158
 159 static struct mtd_partition omap3beagle_nand_partitions[] = {
 160         /* All the partition sizes are listed in terms of NAND block size */
 161         {
 162                 .name           = "X-Loader",
 163                 .offset         = 0,
 164                 .size           = 4 * NAND_BLOCK_SIZE,
 165                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 166         },
 167         {
 168                 .name           = "U-Boot",
 169                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 170                 .size           = 15 * NAND_BLOCK_SIZE,
 171                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 172         },
 173         {
 174                 .name           = "U-Boot Env",
 175                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 176                 .size           = 1 * NAND_BLOCK_SIZE,
 177         },
 178         {
 179                 .name           = "Kernel",
 180                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 181                 .size           = 32 * NAND_BLOCK_SIZE,
 182         },
 183         {
 184                 .name           = "File System",
 185                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 186                 .size           = MTDPART_SIZ_FULL,
 187         },
 188 };
 189
 190 /* DSS */
 191
 192 static int beagle_enable_dvi(struct omap_dss_device *dssdev)
 193 {
 194         if (gpio_is_valid(dssdev->reset_gpio))
 195                 gpio_set_value(dssdev->reset_gpio, 1);
 196
 197         return 0;
 198 }
 199
 200 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
 201 {
 202         if (gpio_is_valid(dssdev->reset_gpio))
 203                 gpio_set_value(dssdev->reset_gpio, 0);
 204 }
 205
 206 static struct panel_generic_dpi_data dvi_panel = {
 207         .name = "generic",
 208         .platform_enable = beagle_enable_dvi,
 209         .platform_disable = beagle_disable_dvi,
 210 };
 211
 212 static struct omap_dss_device beagle_dvi_device = {
 213         .type = OMAP_DISPLAY_TYPE_DPI,
 214         .name = "dvi",
 215         .driver_name = "generic_dpi_panel",
 216         .data = &dvi_panel,
 217         .phy.dpi.data_lines = 24,
 218         .reset_gpio = -EINVAL,
 219 };
 220
 221 static struct omap_dss_device beagle_tv_device = {
 222         .name = "tv",
 223         .driver_name = "venc",
 224         .type = OMAP_DISPLAY_TYPE_VENC,
 225         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 226 };
 227
 228 static struct omap_dss_device *beagle_dss_devices[] = {
 229         &beagle_dvi_device,
 230         &beagle_tv_device,
 231 };
 232
 233 static struct omap_dss_board_info beagle_dss_data = {
 234         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 235         .devices = beagle_dss_devices,
 236         .default_device = &beagle_dvi_device,
 237 };
 238
 239 static void __init beagle_display_init(void)
 240 {
 241         int r;
 242
 243         r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
 244                              "DVI reset");
 245         if (r < 0)
 246                 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
 247 }
 248
 249 #include "sdram-micron-mt46h32m32lf-6.h"
 250
 251 static struct omap2_hsmmc_info mmc[] = {
 252         {
 253                 .mmc            = 1,
 254                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 255                 .gpio_wp        = -EINVAL,
 256         },
 257         {}      /* Terminator */
 258 };
 259
 260 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 261         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 262 };
 263
 264 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 265         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 266 };
 267
 268 static struct gpio_led gpio_leds[];
 269
 270 static int beagle_twl_gpio_setup(struct device *dev,
 271                 unsigned gpio, unsigned ngpio)
 272 {
 273         int r;
 274
 275         if (beagle_config.mmc1_gpio_wp != -EINVAL)
 276                 omap_mux_init_gpio(beagle_config.mmc1_gpio_wp, OMAP_PIN_INPUT);
 277         mmc[0].gpio_wp = beagle_config.mmc1_gpio_wp;
 278         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 279         mmc[0].gpio_cd = gpio + 0;
 280         omap2_hsmmc_init(mmc);
 281
 282         /*
 283          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 284          * high / others active low)
 285          * DVI reset GPIO is different between beagle revisions
 286          */
 287         /* Valid for all -xM revisions */
 288         if (cpu_is_omap3630()) {
 289                 /*
 290                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 291                  * gpio + 2 control varies depending on the board rev as below:
 292                  * P7/P8 revisions(prototype): Camera EN
 293                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 294                  */
 295                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 296                                      "nDVI_PWR_EN");
 297                 if (r)
 298                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 299                                 __func__);
 300                 r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
 301                                      "DVI_LDO_EN");
 302                 if (r)
 303                         pr_err("%s: unable to configure DVI_LDO_EN\n",
 304                                 __func__);
 305         } else {
 306                 /*
 307                  * REVISIT: need ehci-omap hooks for external VBUS
 308                  * power switch and overcurrent detect
 309                  */
 310                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 311                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 312         }
 313         beagle_dvi_device.reset_gpio = beagle_config.reset_gpio;
 314
 315         gpio_request_one(gpio + TWL4030_GPIO_MAX, beagle_config.usb_pwr_level,
 316                         "nEN_USB_PWR");
 317
 318         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 319         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 320
 321         return 0;
 322 }
 323
 324 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 325         .gpio_base      = OMAP_MAX_GPIO_LINES,
 326         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 327         .irq_end        = TWL4030_GPIO_IRQ_END,
 328         .use_leds       = true,
 329         .pullups        = BIT(1),
 330         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 331                                 | BIT(15) | BIT(16) | BIT(17),
 332         .setup          = beagle_twl_gpio_setup,
 333 };
 334
 335 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 336 static struct regulator_init_data beagle_vmmc1 = {
 337         .constraints = {
 338                 .min_uV                 = 1850000,
 339                 .max_uV                 = 3150000,
 340                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 341                                         | REGULATOR_MODE_STANDBY,
 342                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 343                                         | REGULATOR_CHANGE_MODE
 344                                         | REGULATOR_CHANGE_STATUS,
 345         },
 346         .num_consumer_supplies  = ARRAY_SIZE(beagle_vmmc1_supply),
 347         .consumer_supplies      = beagle_vmmc1_supply,
 348 };
 349
 350 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 351 static struct regulator_init_data beagle_vsim = {
 352         .constraints = {
 353                 .min_uV                 = 1800000,
 354                 .max_uV                 = 3000000,
 355                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 356                                         | REGULATOR_MODE_STANDBY,
 357                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 358                                         | REGULATOR_CHANGE_MODE
 359                                         | REGULATOR_CHANGE_STATUS,
 360         },
 361         .num_consumer_supplies  = ARRAY_SIZE(beagle_vsim_supply),
 362         .consumer_supplies      = beagle_vsim_supply,
 363 };
 364
 365 static struct twl4030_platform_data beagle_twldata = {
 366         /* platform_data for children goes here */
 367         .gpio           = &beagle_gpio_data,
 368         .vmmc1          = &beagle_vmmc1,
 369         .vsim           = &beagle_vsim,
 370 };
 371
 372 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 373        {
 374                I2C_BOARD_INFO("eeprom", 0x50),
 375        },
 376 };
 377
 378 static int __init omap3_beagle_i2c_init(void)
 379 {
 380         omap3_pmic_get_config(&beagle_twldata,
 381                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_MADC |
 382                         TWL_COMMON_PDATA_AUDIO,
 383                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 384
 385         beagle_twldata.vpll2->constraints.name = "VDVI";
 386
 387         omap3_pmic_init("twl4030", &beagle_twldata);
 388         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 389          * projector don't work reliably with 400kHz */
 390         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 391         return 0;
 392 }
 393
 394 static struct gpio_led gpio_leds[] = {
 395         {
 396                 .name                   = "beagleboard::usr0",
 397                 .default_trigger        = "heartbeat",
 398                 .gpio                   = 150,
 399         },
 400         {
 401                 .name                   = "beagleboard::usr1",
 402                 .default_trigger        = "mmc0",
 403                 .gpio                   = 149,
 404         },
 405         {
 406                 .name                   = "beagleboard::pmu_stat",
 407                 .gpio                   = -EINVAL,      /* gets replaced */
 408                 .active_low             = true,
 409         },
 410 };
 411
 412 static struct gpio_led_platform_data gpio_led_info = {
 413         .leds           = gpio_leds,
 414         .num_leds       = ARRAY_SIZE(gpio_leds),
 415 };
 416
 417 static struct platform_device leds_gpio = {
 418         .name   = "leds-gpio",
 419         .id     = -1,
 420         .dev    = {
 421                 .platform_data  = &gpio_led_info,
 422         },
 423 };
 424
 425 static struct gpio_keys_button gpio_buttons[] = {
 426         {
 427                 .code                   = BTN_EXTRA,
 428                 /* Dynamically assigned depending on board */
 429                 .gpio                   = -EINVAL,
 430                 .desc                   = "user",
 431                 .wakeup                 = 1,
 432         },
 433 };
 434
 435 static struct gpio_keys_platform_data gpio_key_info = {
 436         .buttons        = gpio_buttons,
 437         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 438 };
 439
 440 static struct platform_device keys_gpio = {
 441         .name   = "gpio-keys",
 442         .id     = -1,
 443         .dev    = {
 444                 .platform_data  = &gpio_key_info,
 445         },
 446 };
 447
 448 static void __init omap3_beagle_init_early(void)
 449 {
 450         omap2_init_common_infrastructure();
 451         omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
 452                                   mt46h32m32lf6_sdrc_params);
 453 }
 454
 455 static void __init omap3_beagle_init_irq(void)
 456 {
 457         omap3_init_irq();
 458 }
 459
 460 static struct platform_device madc_hwmon = {
 461         .name   = "twl4030_madc_hwmon",
 462         .id     = -1,
 463 };
 464
 465 static struct platform_device *omap3_beagle_devices[] __initdata = {
 466         &leds_gpio,
 467         &keys_gpio,
 468         &madc_hwmon,
 469 };
 470
 471 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 472
 473         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 474         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 475         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 476
 477         .phy_reset  = true,
 478         .reset_gpio_port[0]  = -EINVAL,
 479         .reset_gpio_port[1]  = 147,
 480         .reset_gpio_port[2]  = -EINVAL
 481 };
 482
 483 #ifdef CONFIG_OMAP_MUX
 484 static struct omap_board_mux board_mux[] __initdata = {
 485         { .reg_offset = OMAP_MUX_TERMINATOR },
 486 };
 487 #endif
 488
 489 static void __init beagle_opp_init(void)
 490 {
 491         int r = 0;
 492
 493         /* Initialize the omap3 opp table */
 494         if (omap3_opp_init()) {
 495                 pr_err("%s: opp default init failed\n", __func__);
 496                 return;
 497         }
 498
 499         /* Custom OPP enabled for all xM versions */
 500         if (cpu_is_omap3630()) {
 501                 struct device *mpu_dev, *iva_dev;
 502
 503                 mpu_dev = omap2_get_mpuss_device();
 504                 iva_dev = omap2_get_iva_device();
 505
 506                 if (!mpu_dev || !iva_dev) {
 507                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 508                                 __func__, mpu_dev, iva_dev);
 509                         return;
 510                 }
 511                 /* Enable MPU 1GHz and lower opps */
 512                 r = opp_enable(mpu_dev, 800000000);
 513                 /* TODO: MPU 1GHz needs SR and ABB */
 514
 515                 /* Enable IVA 800MHz and lower opps */
 516                 r |= opp_enable(iva_dev, 660000000);
 517                 /* TODO: DSP 800MHz needs SR and ABB */
 518                 if (r) {
 519                         pr_err("%s: failed to enable higher opp %d\n",
 520                                 __func__, r);
 521                         /*
 522                          * Cleanup - disable the higher freqs - we dont care
 523                          * about the results
 524                          */
 525                         opp_disable(mpu_dev, 800000000);
 526                         opp_disable(iva_dev, 660000000);
 527                 }
 528         }
 529         return;
 530 }
 531
 532 static void __init omap3_beagle_init(void)
 533 {
 534         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 535         omap3_beagle_init_rev();
 536         omap3_beagle_i2c_init();
 537
 538         gpio_buttons[0].gpio = beagle_config.usr_button_gpio;
 539
 540         platform_add_devices(omap3_beagle_devices,
 541                         ARRAY_SIZE(omap3_beagle_devices));
 542         omap_display_init(&beagle_dss_data);
 543         omap_serial_init();
 544
 545         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 546         /* REVISIT leave DVI powered down until it's needed ... */
 547         gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 548
 549         usb_musb_init(NULL);
 550         usbhs_init(&usbhs_bdata);
 551         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
 552                              ARRAY_SIZE(omap3beagle_nand_partitions));
 553
 554         /* Ensure msecure is mux'd to be able to set the RTC. */
 555         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 556
 557         /* Ensure SDRC pins are mux'd for self-refresh */
 558         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 559         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 560
 561         beagle_display_init();
 562         beagle_opp_init();
 563 }
 564
 565 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 566         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 567         .atag_offset    = 0x100,
 568         .reserve        = omap_reserve,
 569         .map_io         = omap3_map_io,
 570         .init_early     = omap3_beagle_init_early,
 571         .init_irq       = omap3_beagle_init_irq,
 572         .init_machine   = omap3_beagle_init,
 573         .timer          = &omap3_secure_timer,
 574 MACHINE_END