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  *      XM      = GPIO173, GPIO172, GPIO171: 0 0 0
  64  */
  65 enum {
  66         OMAP3BEAGLE_BOARD_UNKN = 0,
  67         OMAP3BEAGLE_BOARD_AXBX,
  68         OMAP3BEAGLE_BOARD_C1_3,
  69         OMAP3BEAGLE_BOARD_C4,
  70         OMAP3BEAGLE_BOARD_XM,
  71 };
  72
  73 static u8 omap3_beagle_version;
  74
  75 static u8 omap3_beagle_get_rev(void)
  76 {
  77         return omap3_beagle_version;
  78 }
  79
  80 static struct gpio omap3_beagle_rev_gpios[] __initdata = {
  81         { 171, GPIOF_IN, "rev_id_0"    },
  82         { 172, GPIOF_IN, "rev_id_1" },
  83         { 173, GPIOF_IN, "rev_id_2"    },
  84 };
  85
  86 static void __init omap3_beagle_init_rev(void)
  87 {
  88         int ret;
  89         u16 beagle_rev = 0;
  90
  91         omap_mux_init_gpio(171, OMAP_PIN_INPUT_PULLUP);
  92         omap_mux_init_gpio(172, OMAP_PIN_INPUT_PULLUP);
  93         omap_mux_init_gpio(173, OMAP_PIN_INPUT_PULLUP);
  94
  95         ret = gpio_request_array(omap3_beagle_rev_gpios,
  96                                  ARRAY_SIZE(omap3_beagle_rev_gpios));
  97         if (ret < 0) {
  98                 printk(KERN_ERR "Unable to get revision detection GPIO pins\n");
  99                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 100                 return;
 101         }
 102
 103         beagle_rev = gpio_get_value(171) | (gpio_get_value(172) << 1)
 104                         | (gpio_get_value(173) << 2);
 105
 106         gpio_free_array(omap3_beagle_rev_gpios,
 107                         ARRAY_SIZE(omap3_beagle_rev_gpios));
 108
 109         switch (beagle_rev) {
 110         case 7:
 111                 printk(KERN_INFO "OMAP3 Beagle Rev: Ax/Bx\n");
 112                 omap3_beagle_version = OMAP3BEAGLE_BOARD_AXBX;
 113                 break;
 114         case 6:
 115                 printk(KERN_INFO "OMAP3 Beagle Rev: C1/C2/C3\n");
 116                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C1_3;
 117                 break;
 118         case 5:
 119                 printk(KERN_INFO "OMAP3 Beagle Rev: C4\n");
 120                 omap3_beagle_version = OMAP3BEAGLE_BOARD_C4;
 121                 break;
 122         case 0:
 123                 printk(KERN_INFO "OMAP3 Beagle Rev: xM\n");
 124                 omap3_beagle_version = OMAP3BEAGLE_BOARD_XM;
 125                 break;
 126         default:
 127                 printk(KERN_INFO "OMAP3 Beagle Rev: unknown %hd\n", beagle_rev);
 128                 omap3_beagle_version = OMAP3BEAGLE_BOARD_UNKN;
 129         }
 130 }
 131
 132 static struct mtd_partition omap3beagle_nand_partitions[] = {
 133         /* All the partition sizes are listed in terms of NAND block size */
 134         {
 135                 .name           = "X-Loader",
 136                 .offset         = 0,
 137                 .size           = 4 * NAND_BLOCK_SIZE,
 138                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 139         },
 140         {
 141                 .name           = "U-Boot",
 142                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
 143                 .size           = 15 * NAND_BLOCK_SIZE,
 144                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
 145         },
 146         {
 147                 .name           = "U-Boot Env",
 148                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
 149                 .size           = 1 * NAND_BLOCK_SIZE,
 150         },
 151         {
 152                 .name           = "Kernel",
 153                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
 154                 .size           = 32 * NAND_BLOCK_SIZE,
 155         },
 156         {
 157                 .name           = "File System",
 158                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
 159                 .size           = MTDPART_SIZ_FULL,
 160         },
 161 };
 162
 163 /* DSS */
 164
 165 static int beagle_enable_dvi(struct omap_dss_device *dssdev)
 166 {
 167         if (gpio_is_valid(dssdev->reset_gpio))
 168                 gpio_set_value(dssdev->reset_gpio, 1);
 169
 170         return 0;
 171 }
 172
 173 static void beagle_disable_dvi(struct omap_dss_device *dssdev)
 174 {
 175         if (gpio_is_valid(dssdev->reset_gpio))
 176                 gpio_set_value(dssdev->reset_gpio, 0);
 177 }
 178
 179 static struct panel_generic_dpi_data dvi_panel = {
 180         .name = "generic",
 181         .platform_enable = beagle_enable_dvi,
 182         .platform_disable = beagle_disable_dvi,
 183 };
 184
 185 static struct omap_dss_device beagle_dvi_device = {
 186         .type = OMAP_DISPLAY_TYPE_DPI,
 187         .name = "dvi",
 188         .driver_name = "generic_dpi_panel",
 189         .data = &dvi_panel,
 190         .phy.dpi.data_lines = 24,
 191         .reset_gpio = -EINVAL,
 192 };
 193
 194 static struct omap_dss_device beagle_tv_device = {
 195         .name = "tv",
 196         .driver_name = "venc",
 197         .type = OMAP_DISPLAY_TYPE_VENC,
 198         .phy.venc.type = OMAP_DSS_VENC_TYPE_SVIDEO,
 199 };
 200
 201 static struct omap_dss_device *beagle_dss_devices[] = {
 202         &beagle_dvi_device,
 203         &beagle_tv_device,
 204 };
 205
 206 static struct omap_dss_board_info beagle_dss_data = {
 207         .num_devices = ARRAY_SIZE(beagle_dss_devices),
 208         .devices = beagle_dss_devices,
 209         .default_device = &beagle_dvi_device,
 210 };
 211
 212 static void __init beagle_display_init(void)
 213 {
 214         int r;
 215
 216         r = gpio_request_one(beagle_dvi_device.reset_gpio, GPIOF_OUT_INIT_LOW,
 217                              "DVI reset");
 218         if (r < 0)
 219                 printk(KERN_ERR "Unable to get DVI reset GPIO\n");
 220 }
 221
 222 #include "sdram-micron-mt46h32m32lf-6.h"
 223
 224 static struct omap2_hsmmc_info mmc[] = {
 225         {
 226                 .mmc            = 1,
 227                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
 228                 .gpio_wp        = 29,
 229         },
 230         {}      /* Terminator */
 231 };
 232
 233 static struct regulator_consumer_supply beagle_vmmc1_supply[] = {
 234         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
 235 };
 236
 237 static struct regulator_consumer_supply beagle_vsim_supply[] = {
 238         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
 239 };
 240
 241 static struct gpio_led gpio_leds[];
 242
 243 static int beagle_twl_gpio_setup(struct device *dev,
 244                 unsigned gpio, unsigned ngpio)
 245 {
 246         int r, usb_pwr_level;
 247
 248         if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
 249                 mmc[0].gpio_wp = -EINVAL;
 250         } else if ((omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C1_3) ||
 251                 (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_C4)) {
 252                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
 253                 mmc[0].gpio_wp = 23;
 254         } else {
 255                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
 256         }
 257         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
 258         mmc[0].gpio_cd = gpio + 0;
 259         omap2_hsmmc_init(mmc);
 260
 261         /*
 262          * TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, XM active
 263          * high / others active low)
 264          * DVI reset GPIO is different between beagle revisions
 265          */
 266         if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
 267                 usb_pwr_level = GPIOF_OUT_INIT_HIGH;
 268                 beagle_dvi_device.reset_gpio = 129;
 269                 /*
 270                  * gpio + 1 on Xm controls the TFP410's enable line (active low)
 271                  * gpio + 2 control varies depending on the board rev as below:
 272                  * P7/P8 revisions(prototype): Camera EN
 273                  * A2+ revisions (production): LDO (DVI, serial, led blocks)
 274                  */
 275                 r = gpio_request_one(gpio + 1, GPIOF_OUT_INIT_LOW,
 276                                      "nDVI_PWR_EN");
 277                 if (r)
 278                         pr_err("%s: unable to configure nDVI_PWR_EN\n",
 279                                 __func__);
 280                 r = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
 281                                      "DVI_LDO_EN");
 282                 if (r)
 283                         pr_err("%s: unable to configure DVI_LDO_EN\n",
 284                                 __func__);
 285         } else {
 286                 usb_pwr_level = GPIOF_OUT_INIT_LOW;
 287                 beagle_dvi_device.reset_gpio = 170;
 288                 /*
 289                  * REVISIT: need ehci-omap hooks for external VBUS
 290                  * power switch and overcurrent detect
 291                  */
 292                 if (gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC"))
 293                         pr_err("%s: unable to configure EHCI_nOC\n", __func__);
 294         }
 295
 296         gpio_request_one(gpio + TWL4030_GPIO_MAX, usb_pwr_level, "nEN_USB_PWR");
 297
 298         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
 299         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
 300
 301         return 0;
 302 }
 303
 304 static struct twl4030_gpio_platform_data beagle_gpio_data = {
 305         .gpio_base      = OMAP_MAX_GPIO_LINES,
 306         .irq_base       = TWL4030_GPIO_IRQ_BASE,
 307         .irq_end        = TWL4030_GPIO_IRQ_END,
 308         .use_leds       = true,
 309         .pullups        = BIT(1),
 310         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
 311                                 | BIT(15) | BIT(16) | BIT(17),
 312         .setup          = beagle_twl_gpio_setup,
 313 };
 314
 315 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
 316 static struct regulator_init_data beagle_vmmc1 = {
 317         .constraints = {
 318                 .min_uV                 = 1850000,
 319                 .max_uV                 = 3150000,
 320                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 321                                         | REGULATOR_MODE_STANDBY,
 322                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 323                                         | REGULATOR_CHANGE_MODE
 324                                         | REGULATOR_CHANGE_STATUS,
 325         },
 326         .num_consumer_supplies  = ARRAY_SIZE(beagle_vmmc1_supply),
 327         .consumer_supplies      = beagle_vmmc1_supply,
 328 };
 329
 330 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
 331 static struct regulator_init_data beagle_vsim = {
 332         .constraints = {
 333                 .min_uV                 = 1800000,
 334                 .max_uV                 = 3000000,
 335                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
 336                                         | REGULATOR_MODE_STANDBY,
 337                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
 338                                         | REGULATOR_CHANGE_MODE
 339                                         | REGULATOR_CHANGE_STATUS,
 340         },
 341         .num_consumer_supplies  = ARRAY_SIZE(beagle_vsim_supply),
 342         .consumer_supplies      = beagle_vsim_supply,
 343 };
 344
 345 static struct twl4030_platform_data beagle_twldata = {
 346         /* platform_data for children goes here */
 347         .gpio           = &beagle_gpio_data,
 348         .vmmc1          = &beagle_vmmc1,
 349         .vsim           = &beagle_vsim,
 350 };
 351
 352 static struct i2c_board_info __initdata beagle_i2c_eeprom[] = {
 353        {
 354                I2C_BOARD_INFO("eeprom", 0x50),
 355        },
 356 };
 357
 358 static int __init omap3_beagle_i2c_init(void)
 359 {
 360         omap3_pmic_get_config(&beagle_twldata,
 361                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
 362                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
 363
 364         beagle_twldata.vpll2->constraints.name = "VDVI";
 365
 366         omap3_pmic_init("twl4030", &beagle_twldata);
 367         /* Bus 3 is attached to the DVI port where devices like the pico DLP
 368          * projector don't work reliably with 400kHz */
 369         omap_register_i2c_bus(3, 100, beagle_i2c_eeprom, ARRAY_SIZE(beagle_i2c_eeprom));
 370         return 0;
 371 }
 372
 373 static struct gpio_led gpio_leds[] = {
 374         {
 375                 .name                   = "beagleboard::usr0",
 376                 .default_trigger        = "heartbeat",
 377                 .gpio                   = 150,
 378         },
 379         {
 380                 .name                   = "beagleboard::usr1",
 381                 .default_trigger        = "mmc0",
 382                 .gpio                   = 149,
 383         },
 384         {
 385                 .name                   = "beagleboard::pmu_stat",
 386                 .gpio                   = -EINVAL,      /* gets replaced */
 387                 .active_low             = true,
 388         },
 389 };
 390
 391 static struct gpio_led_platform_data gpio_led_info = {
 392         .leds           = gpio_leds,
 393         .num_leds       = ARRAY_SIZE(gpio_leds),
 394 };
 395
 396 static struct platform_device leds_gpio = {
 397         .name   = "leds-gpio",
 398         .id     = -1,
 399         .dev    = {
 400                 .platform_data  = &gpio_led_info,
 401         },
 402 };
 403
 404 static struct gpio_keys_button gpio_buttons[] = {
 405         {
 406                 .code                   = BTN_EXTRA,
 407                 .gpio                   = 7,
 408                 .desc                   = "user",
 409                 .wakeup                 = 1,
 410         },
 411 };
 412
 413 static struct gpio_keys_platform_data gpio_key_info = {
 414         .buttons        = gpio_buttons,
 415         .nbuttons       = ARRAY_SIZE(gpio_buttons),
 416 };
 417
 418 static struct platform_device keys_gpio = {
 419         .name   = "gpio-keys",
 420         .id     = -1,
 421         .dev    = {
 422                 .platform_data  = &gpio_key_info,
 423         },
 424 };
 425
 426 static void __init omap3_beagle_init_early(void)
 427 {
 428         omap2_init_common_infrastructure();
 429         omap2_init_common_devices(mt46h32m32lf6_sdrc_params,
 430                                   mt46h32m32lf6_sdrc_params);
 431 }
 432
 433 static void __init omap3_beagle_init_irq(void)
 434 {
 435         omap3_init_irq();
 436 }
 437
 438 static struct platform_device *omap3_beagle_devices[] __initdata = {
 439         &leds_gpio,
 440         &keys_gpio,
 441 };
 442
 443 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
 444
 445         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 446         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 447         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
 448
 449         .phy_reset  = true,
 450         .reset_gpio_port[0]  = -EINVAL,
 451         .reset_gpio_port[1]  = 147,
 452         .reset_gpio_port[2]  = -EINVAL
 453 };
 454
 455 #ifdef CONFIG_OMAP_MUX
 456 static struct omap_board_mux board_mux[] __initdata = {
 457         { .reg_offset = OMAP_MUX_TERMINATOR },
 458 };
 459 #endif
 460
 461 static void __init beagle_opp_init(void)
 462 {
 463         int r = 0;
 464
 465         /* Initialize the omap3 opp table */
 466         if (omap3_opp_init()) {
 467                 pr_err("%s: opp default init failed\n", __func__);
 468                 return;
 469         }
 470
 471         /* Custom OPP enabled for XM */
 472         if (omap3_beagle_get_rev() == OMAP3BEAGLE_BOARD_XM) {
 473                 struct omap_hwmod *mh = omap_hwmod_lookup("mpu");
 474                 struct omap_hwmod *dh = omap_hwmod_lookup("iva");
 475                 struct device *dev;
 476
 477                 if (!mh || !dh) {
 478                         pr_err("%s: Aiee.. no mpu/dsp devices? %p %p\n",
 479                                 __func__, mh, dh);
 480                         return;
 481                 }
 482                 /* Enable MPU 1GHz and lower opps */
 483                 dev = &mh->od->pdev.dev;
 484                 r = opp_enable(dev, 800000000);
 485                 /* TODO: MPU 1GHz needs SR and ABB */
 486
 487                 /* Enable IVA 800MHz and lower opps */
 488                 dev = &dh->od->pdev.dev;
 489                 r |= opp_enable(dev, 660000000);
 490                 /* TODO: DSP 800MHz needs SR and ABB */
 491                 if (r) {
 492                         pr_err("%s: failed to enable higher opp %d\n",
 493                                 __func__, r);
 494                         /*
 495                          * Cleanup - disable the higher freqs - we dont care
 496                          * about the results
 497                          */
 498                         dev = &mh->od->pdev.dev;
 499                         opp_disable(dev, 800000000);
 500                         dev = &dh->od->pdev.dev;
 501                         opp_disable(dev, 660000000);
 502                 }
 503         }
 504         return;
 505 }
 506
 507 static void __init omap3_beagle_init(void)
 508 {
 509         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
 510         omap3_beagle_init_rev();
 511         omap3_beagle_i2c_init();
 512         platform_add_devices(omap3_beagle_devices,
 513                         ARRAY_SIZE(omap3_beagle_devices));
 514         omap_display_init(&beagle_dss_data);
 515         omap_serial_init();
 516
 517         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
 518         /* REVISIT leave DVI powered down until it's needed ... */
 519         gpio_request_one(170, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
 520
 521         usb_musb_init(NULL);
 522         usbhs_init(&usbhs_bdata);
 523         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3beagle_nand_partitions,
 524                              ARRAY_SIZE(omap3beagle_nand_partitions));
 525
 526         /* Ensure msecure is mux'd to be able to set the RTC. */
 527         omap_mux_init_signal("sys_drm_msecure", OMAP_PIN_OFF_OUTPUT_HIGH);
 528
 529         /* Ensure SDRC pins are mux'd for self-refresh */
 530         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
 531         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
 532
 533         beagle_display_init();
 534         beagle_opp_init();
 535 }
 536
 537 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
 538         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
 539         .boot_params    = 0x80000100,
 540         .reserve        = omap_reserve,
 541         .map_io         = omap3_map_io,
 542         .init_early     = omap3_beagle_init_early,
 543         .init_irq       = omap3_beagle_init_irq,
 544         .init_machine   = omap3_beagle_init,
 545         .timer          = &omap3_secure_timer,
 546 MACHINE_END