1 /* 2 * Generic PHY Management code 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 * 6 * Copyright 2011 Freescale Semiconductor, Inc. 7 * author Andy Fleming 8 * 9 * Based loosely off of Linux's PHY Lib 10 */ 11 12 #include <config.h> 13 #include <common.h> 14 #include <malloc.h> 15 #include <net.h> 16 #include <command.h> 17 #include <miiphy.h> 18 #include <phy.h> 19 #include <errno.h> 20 #include <linux/err.h> 21 22 /* Generic PHY support and helper functions */ 23 24 /** 25 * genphy_config_advert - sanitize and advertise auto-negotation parameters 26 * @phydev: target phy_device struct 27 * 28 * Description: Writes MII_ADVERTISE with the appropriate values, 29 * after sanitizing the values to make sure we only advertise 30 * what is supported. Returns < 0 on error, 0 if the PHY's advertisement 31 * hasn't changed, and > 0 if it has changed. 32 */ 33 static int genphy_config_advert(struct phy_device *phydev) 34 { 35 u32 advertise; 36 int oldadv, adv; 37 int err, changed = 0; 38 39 /* Only allow advertising what 40 * this PHY supports */ 41 phydev->advertising &= phydev->supported; 42 advertise = phydev->advertising; 43 44 /* Setup standard advertisement */ 45 oldadv = adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); 46 47 if (adv < 0) 48 return adv; 49 50 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP | 51 ADVERTISE_PAUSE_ASYM); 52 if (advertise & ADVERTISED_10baseT_Half) 53 adv |= ADVERTISE_10HALF; 54 if (advertise & ADVERTISED_10baseT_Full) 55 adv |= ADVERTISE_10FULL; 56 if (advertise & ADVERTISED_100baseT_Half) 57 adv |= ADVERTISE_100HALF; 58 if (advertise & ADVERTISED_100baseT_Full) 59 adv |= ADVERTISE_100FULL; 60 if (advertise & ADVERTISED_Pause) 61 adv |= ADVERTISE_PAUSE_CAP; 62 if (advertise & ADVERTISED_Asym_Pause) 63 adv |= ADVERTISE_PAUSE_ASYM; 64 if (advertise & ADVERTISED_1000baseX_Half) 65 adv |= ADVERTISE_1000XHALF; 66 if (advertise & ADVERTISED_1000baseX_Full) 67 adv |= ADVERTISE_1000XFULL; 68 69 if (adv != oldadv) { 70 err = phy_write(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE, adv); 71 72 if (err < 0) 73 return err; 74 changed = 1; 75 } 76 77 /* Configure gigabit if it's supported */ 78 if (phydev->supported & (SUPPORTED_1000baseT_Half | 79 SUPPORTED_1000baseT_Full)) { 80 oldadv = adv = phy_read(phydev, MDIO_DEVAD_NONE, MII_CTRL1000); 81 82 if (adv < 0) 83 return adv; 84 85 adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); 86 if (advertise & SUPPORTED_1000baseT_Half) 87 adv |= ADVERTISE_1000HALF; 88 if (advertise & SUPPORTED_1000baseT_Full) 89 adv |= ADVERTISE_1000FULL; 90 91 if (adv != oldadv) { 92 err = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, 93 adv); 94 95 if (err < 0) 96 return err; 97 changed = 1; 98 } 99 } 100 101 return changed; 102 } 103 104 105 /** 106 * genphy_setup_forced - configures/forces speed/duplex from @phydev 107 * @phydev: target phy_device struct 108 * 109 * Description: Configures MII_BMCR to force speed/duplex 110 * to the values in phydev. Assumes that the values are valid. 111 */ 112 static int genphy_setup_forced(struct phy_device *phydev) 113 { 114 int err; 115 int ctl = 0; 116 117 phydev->pause = phydev->asym_pause = 0; 118 119 if (SPEED_1000 == phydev->speed) 120 ctl |= BMCR_SPEED1000; 121 else if (SPEED_100 == phydev->speed) 122 ctl |= BMCR_SPEED100; 123 124 if (DUPLEX_FULL == phydev->duplex) 125 ctl |= BMCR_FULLDPLX; 126 127 err = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl); 128 129 return err; 130 } 131 132 133 /** 134 * genphy_restart_aneg - Enable and Restart Autonegotiation 135 * @phydev: target phy_device struct 136 */ 137 int genphy_restart_aneg(struct phy_device *phydev) 138 { 139 int ctl; 140 141 ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 142 143 if (ctl < 0) 144 return ctl; 145 146 ctl |= (BMCR_ANENABLE | BMCR_ANRESTART); 147 148 /* Don't isolate the PHY if we're negotiating */ 149 ctl &= ~(BMCR_ISOLATE); 150 151 ctl = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, ctl); 152 153 return ctl; 154 } 155 156 157 /** 158 * genphy_config_aneg - restart auto-negotiation or write BMCR 159 * @phydev: target phy_device struct 160 * 161 * Description: If auto-negotiation is enabled, we configure the 162 * advertising, and then restart auto-negotiation. If it is not 163 * enabled, then we write the BMCR. 164 */ 165 int genphy_config_aneg(struct phy_device *phydev) 166 { 167 int result; 168 169 if (AUTONEG_ENABLE != phydev->autoneg) 170 return genphy_setup_forced(phydev); 171 172 result = genphy_config_advert(phydev); 173 174 if (result < 0) /* error */ 175 return result; 176 177 if (result == 0) { 178 /* Advertisment hasn't changed, but maybe aneg was never on to 179 * begin with? Or maybe phy was isolated? */ 180 int ctl = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 181 182 if (ctl < 0) 183 return ctl; 184 185 if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE)) 186 result = 1; /* do restart aneg */ 187 } 188 189 /* Only restart aneg if we are advertising something different 190 * than we were before. */ 191 if (result > 0) 192 result = genphy_restart_aneg(phydev); 193 194 return result; 195 } 196 197 /** 198 * genphy_update_link - update link status in @phydev 199 * @phydev: target phy_device struct 200 * 201 * Description: Update the value in phydev->link to reflect the 202 * current link value. In order to do this, we need to read 203 * the status register twice, keeping the second value. 204 */ 205 int genphy_update_link(struct phy_device *phydev) 206 { 207 unsigned int mii_reg; 208 209 /* 210 * Wait if the link is up, and autonegotiation is in progress 211 * (ie - we're capable and it's not done) 212 */ 213 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 214 215 /* 216 * If we already saw the link up, and it hasn't gone down, then 217 * we don't need to wait for autoneg again 218 */ 219 if (phydev->link && mii_reg & BMSR_LSTATUS) 220 return 0; 221 222 if ((mii_reg & BMSR_ANEGCAPABLE) && !(mii_reg & BMSR_ANEGCOMPLETE)) { 223 int i = 0; 224 225 printf("%s Waiting for PHY auto negotiation to complete", 226 phydev->dev->name); 227 while (!(mii_reg & BMSR_ANEGCOMPLETE)) { 228 /* 229 * Timeout reached ? 230 */ 231 if (i > PHY_ANEG_TIMEOUT) { 232 printf(" TIMEOUT !\n"); 233 phydev->link = 0; 234 return 0; 235 } 236 237 if (ctrlc()) { 238 puts("user interrupt!\n"); 239 phydev->link = 0; 240 return -EINTR; 241 } 242 243 if ((i++ % 500) == 0) 244 printf("."); 245 246 udelay(1000); /* 1 ms */ 247 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 248 } 249 printf(" done\n"); 250 phydev->link = 1; 251 } else { 252 /* Read the link a second time to clear the latched state */ 253 mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 254 255 if (mii_reg & BMSR_LSTATUS) 256 phydev->link = 1; 257 else 258 phydev->link = 0; 259 } 260 261 return 0; 262 } 263 264 /* 265 * Generic function which updates the speed and duplex. If 266 * autonegotiation is enabled, it uses the AND of the link 267 * partner's advertised capabilities and our advertised 268 * capabilities. If autonegotiation is disabled, we use the 269 * appropriate bits in the control register. 270 * 271 * Stolen from Linux's mii.c and phy_device.c 272 */ 273 int genphy_parse_link(struct phy_device *phydev) 274 { 275 int mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 276 277 /* We're using autonegotiation */ 278 if (mii_reg & BMSR_ANEGCAPABLE) { 279 u32 lpa = 0; 280 int gblpa = 0; 281 u32 estatus = 0; 282 283 /* Check for gigabit capability */ 284 if (mii_reg & BMSR_ERCAP) { 285 /* We want a list of states supported by 286 * both PHYs in the link 287 */ 288 gblpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_STAT1000); 289 if (gblpa < 0) { 290 debug("Could not read MII_STAT1000. Ignoring gigabit capability\n"); 291 gblpa = 0; 292 } 293 gblpa &= phy_read(phydev, 294 MDIO_DEVAD_NONE, MII_CTRL1000) << 2; 295 } 296 297 /* Set the baseline so we only have to set them 298 * if they're different 299 */ 300 phydev->speed = SPEED_10; 301 phydev->duplex = DUPLEX_HALF; 302 303 /* Check the gigabit fields */ 304 if (gblpa & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) { 305 phydev->speed = SPEED_1000; 306 307 if (gblpa & PHY_1000BTSR_1000FD) 308 phydev->duplex = DUPLEX_FULL; 309 310 /* We're done! */ 311 return 0; 312 } 313 314 lpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); 315 lpa &= phy_read(phydev, MDIO_DEVAD_NONE, MII_LPA); 316 317 if (lpa & (LPA_100FULL | LPA_100HALF)) { 318 phydev->speed = SPEED_100; 319 320 if (lpa & LPA_100FULL) 321 phydev->duplex = DUPLEX_FULL; 322 323 } else if (lpa & LPA_10FULL) 324 phydev->duplex = DUPLEX_FULL; 325 326 /* 327 * Extended status may indicate that the PHY supports 328 * 1000BASE-T/X even though the 1000BASE-T registers 329 * are missing. In this case we can't tell whether the 330 * peer also supports it, so we only check extended 331 * status if the 1000BASE-T registers are actually 332 * missing. 333 */ 334 if ((mii_reg & BMSR_ESTATEN) && !(mii_reg & BMSR_ERCAP)) 335 estatus = phy_read(phydev, MDIO_DEVAD_NONE, 336 MII_ESTATUS); 337 338 if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_XHALF | 339 ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) { 340 phydev->speed = SPEED_1000; 341 if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_TFULL)) 342 phydev->duplex = DUPLEX_FULL; 343 } 344 345 } else { 346 u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 347 348 phydev->speed = SPEED_10; 349 phydev->duplex = DUPLEX_HALF; 350 351 if (bmcr & BMCR_FULLDPLX) 352 phydev->duplex = DUPLEX_FULL; 353 354 if (bmcr & BMCR_SPEED1000) 355 phydev->speed = SPEED_1000; 356 else if (bmcr & BMCR_SPEED100) 357 phydev->speed = SPEED_100; 358 } 359 360 return 0; 361 } 362 363 int genphy_config(struct phy_device *phydev) 364 { 365 int val; 366 u32 features; 367 368 /* For now, I'll claim that the generic driver supports 369 * all possible port types */ 370 features = (SUPPORTED_TP | SUPPORTED_MII 371 | SUPPORTED_AUI | SUPPORTED_FIBRE | 372 SUPPORTED_BNC); 373 374 /* Do we support autonegotiation? */ 375 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 376 377 if (val < 0) 378 return val; 379 380 if (val & BMSR_ANEGCAPABLE) 381 features |= SUPPORTED_Autoneg; 382 383 if (val & BMSR_100FULL) 384 features |= SUPPORTED_100baseT_Full; 385 if (val & BMSR_100HALF) 386 features |= SUPPORTED_100baseT_Half; 387 if (val & BMSR_10FULL) 388 features |= SUPPORTED_10baseT_Full; 389 if (val & BMSR_10HALF) 390 features |= SUPPORTED_10baseT_Half; 391 392 if (val & BMSR_ESTATEN) { 393 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS); 394 395 if (val < 0) 396 return val; 397 398 if (val & ESTATUS_1000_TFULL) 399 features |= SUPPORTED_1000baseT_Full; 400 if (val & ESTATUS_1000_THALF) 401 features |= SUPPORTED_1000baseT_Half; 402 if (val & ESTATUS_1000_XFULL) 403 features |= SUPPORTED_1000baseX_Full; 404 if (val & ESTATUS_1000_XHALF) 405 features |= SUPPORTED_1000baseX_Half; 406 } 407 408 phydev->supported = features; 409 phydev->advertising = features; 410 411 genphy_config_aneg(phydev); 412 413 return 0; 414 } 415 416 int genphy_startup(struct phy_device *phydev) 417 { 418 genphy_update_link(phydev); 419 genphy_parse_link(phydev); 420 421 return 0; 422 } 423 424 int genphy_shutdown(struct phy_device *phydev) 425 { 426 return 0; 427 } 428 429 static struct phy_driver genphy_driver = { 430 .uid = 0xffffffff, 431 .mask = 0xffffffff, 432 .name = "Generic PHY", 433 .features = 0, 434 .config = genphy_config, 435 .startup = genphy_startup, 436 .shutdown = genphy_shutdown, 437 }; 438 439 static LIST_HEAD(phy_drivers); 440 441 int phy_init(void) 442 { 443 #ifdef CONFIG_PHY_ATHEROS 444 phy_atheros_init(); 445 #endif 446 #ifdef CONFIG_PHY_BROADCOM 447 phy_broadcom_init(); 448 #endif 449 #ifdef CONFIG_PHY_DAVICOM 450 phy_davicom_init(); 451 #endif 452 #ifdef CONFIG_PHY_ET1011C 453 phy_et1011c_init(); 454 #endif 455 #ifdef CONFIG_PHY_ICPLUS 456 phy_icplus_init(); 457 #endif 458 #ifdef CONFIG_PHY_LXT 459 phy_lxt_init(); 460 #endif 461 #ifdef CONFIG_PHY_MARVELL 462 phy_marvell_init(); 463 #endif 464 #ifdef CONFIG_PHY_MICREL 465 phy_micrel_init(); 466 #endif 467 #ifdef CONFIG_PHY_NATSEMI 468 phy_natsemi_init(); 469 #endif 470 #ifdef CONFIG_PHY_REALTEK 471 phy_realtek_init(); 472 #endif 473 #ifdef CONFIG_PHY_SMSC 474 phy_smsc_init(); 475 #endif 476 #ifdef CONFIG_PHY_TERANETICS 477 phy_teranetics_init(); 478 #endif 479 #ifdef CONFIG_PHY_VITESSE 480 phy_vitesse_init(); 481 #endif 482 483 return 0; 484 } 485 486 int phy_register(struct phy_driver *drv) 487 { 488 INIT_LIST_HEAD(&drv->list); 489 list_add_tail(&drv->list, &phy_drivers); 490 491 return 0; 492 } 493 494 static int phy_probe(struct phy_device *phydev) 495 { 496 int err = 0; 497 498 phydev->advertising = phydev->supported = phydev->drv->features; 499 phydev->mmds = phydev->drv->mmds; 500 501 if (phydev->drv->probe) 502 err = phydev->drv->probe(phydev); 503 504 return err; 505 } 506 507 static struct phy_driver *generic_for_interface(phy_interface_t interface) 508 { 509 #ifdef CONFIG_PHYLIB_10G 510 if (is_10g_interface(interface)) 511 return &gen10g_driver; 512 #endif 513 514 return &genphy_driver; 515 } 516 517 static struct phy_driver *get_phy_driver(struct phy_device *phydev, 518 phy_interface_t interface) 519 { 520 struct list_head *entry; 521 int phy_id = phydev->phy_id; 522 struct phy_driver *drv = NULL; 523 524 list_for_each(entry, &phy_drivers) { 525 drv = list_entry(entry, struct phy_driver, list); 526 if ((drv->uid & drv->mask) == (phy_id & drv->mask)) 527 return drv; 528 } 529 530 /* If we made it here, there's no driver for this PHY */ 531 return generic_for_interface(interface); 532 } 533 534 static struct phy_device *phy_device_create(struct mii_dev *bus, int addr, 535 int phy_id, 536 phy_interface_t interface) 537 { 538 struct phy_device *dev; 539 540 /* We allocate the device, and initialize the 541 * default values */ 542 dev = malloc(sizeof(*dev)); 543 if (!dev) { 544 printf("Failed to allocate PHY device for %s:%d\n", 545 bus->name, addr); 546 return NULL; 547 } 548 549 memset(dev, 0, sizeof(*dev)); 550 551 dev->duplex = -1; 552 dev->link = 1; 553 dev->interface = interface; 554 555 dev->autoneg = AUTONEG_ENABLE; 556 557 dev->addr = addr; 558 dev->phy_id = phy_id; 559 dev->bus = bus; 560 561 dev->drv = get_phy_driver(dev, interface); 562 563 phy_probe(dev); 564 565 bus->phymap[addr] = dev; 566 567 return dev; 568 } 569 570 /** 571 * get_phy_id - reads the specified addr for its ID. 572 * @bus: the target MII bus 573 * @addr: PHY address on the MII bus 574 * @phy_id: where to store the ID retrieved. 575 * 576 * Description: Reads the ID registers of the PHY at @addr on the 577 * @bus, stores it in @phy_id and returns zero on success. 578 */ 579 static int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id) 580 { 581 int phy_reg; 582 583 /* Grab the bits from PHYIR1, and put them 584 * in the upper half */ 585 phy_reg = bus->read(bus, addr, devad, MII_PHYSID1); 586 587 if (phy_reg < 0) 588 return -EIO; 589 590 *phy_id = (phy_reg & 0xffff) << 16; 591 592 /* Grab the bits from PHYIR2, and put them in the lower half */ 593 phy_reg = bus->read(bus, addr, devad, MII_PHYSID2); 594 595 if (phy_reg < 0) 596 return -EIO; 597 598 *phy_id |= (phy_reg & 0xffff); 599 600 return 0; 601 } 602 603 static struct phy_device *create_phy_by_mask(struct mii_dev *bus, 604 unsigned phy_mask, int devad, phy_interface_t interface) 605 { 606 u32 phy_id = 0xffffffff; 607 while (phy_mask) { 608 int addr = ffs(phy_mask) - 1; 609 int r = get_phy_id(bus, addr, devad, &phy_id); 610 if (r < 0) 611 return ERR_PTR(r); 612 /* If the PHY ID is mostly f's, we didn't find anything */ 613 if ((phy_id & 0x1fffffff) != 0x1fffffff) 614 return phy_device_create(bus, addr, phy_id, interface); 615 phy_mask &= ~(1 << addr); 616 } 617 return NULL; 618 } 619 620 static struct phy_device *search_for_existing_phy(struct mii_dev *bus, 621 unsigned phy_mask, phy_interface_t interface) 622 { 623 /* If we have one, return the existing device, with new interface */ 624 while (phy_mask) { 625 int addr = ffs(phy_mask) - 1; 626 if (bus->phymap[addr]) { 627 bus->phymap[addr]->interface = interface; 628 return bus->phymap[addr]; 629 } 630 phy_mask &= ~(1 << addr); 631 } 632 return NULL; 633 } 634 635 static struct phy_device *get_phy_device_by_mask(struct mii_dev *bus, 636 unsigned phy_mask, phy_interface_t interface) 637 { 638 int i; 639 struct phy_device *phydev; 640 641 phydev = search_for_existing_phy(bus, phy_mask, interface); 642 if (phydev) 643 return phydev; 644 /* Try Standard (ie Clause 22) access */ 645 /* Otherwise we have to try Clause 45 */ 646 for (i = 0; i < 5; i++) { 647 phydev = create_phy_by_mask(bus, phy_mask, 648 i ? i : MDIO_DEVAD_NONE, interface); 649 if (IS_ERR(phydev)) 650 return NULL; 651 if (phydev) 652 return phydev; 653 } 654 printf("Phy not found\n"); 655 return phy_device_create(bus, ffs(phy_mask) - 1, 0xffffffff, interface); 656 } 657 658 /** 659 * get_phy_device - reads the specified PHY device and returns its @phy_device struct 660 * @bus: the target MII bus 661 * @addr: PHY address on the MII bus 662 * 663 * Description: Reads the ID registers of the PHY at @addr on the 664 * @bus, then allocates and returns the phy_device to represent it. 665 */ 666 static struct phy_device *get_phy_device(struct mii_dev *bus, int addr, 667 phy_interface_t interface) 668 { 669 return get_phy_device_by_mask(bus, 1 << addr, interface); 670 } 671 672 int phy_reset(struct phy_device *phydev) 673 { 674 int reg; 675 int timeout = 500; 676 int devad = MDIO_DEVAD_NONE; 677 678 #ifdef CONFIG_PHYLIB_10G 679 /* If it's 10G, we need to issue reset through one of the MMDs */ 680 if (is_10g_interface(phydev->interface)) { 681 if (!phydev->mmds) 682 gen10g_discover_mmds(phydev); 683 684 devad = ffs(phydev->mmds) - 1; 685 } 686 #endif 687 688 reg = phy_read(phydev, devad, MII_BMCR); 689 if (reg < 0) { 690 debug("PHY status read failed\n"); 691 return -1; 692 } 693 694 reg |= BMCR_RESET; 695 696 if (phy_write(phydev, devad, MII_BMCR, reg) < 0) { 697 debug("PHY reset failed\n"); 698 return -1; 699 } 700 701 #ifdef CONFIG_PHY_RESET_DELAY 702 udelay(CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */ 703 #endif 704 /* 705 * Poll the control register for the reset bit to go to 0 (it is 706 * auto-clearing). This should happen within 0.5 seconds per the 707 * IEEE spec. 708 */ 709 while ((reg & BMCR_RESET) && timeout--) { 710 reg = phy_read(phydev, devad, MII_BMCR); 711 712 if (reg < 0) { 713 debug("PHY status read failed\n"); 714 return -1; 715 } 716 udelay(1000); 717 } 718 719 if (reg & BMCR_RESET) { 720 puts("PHY reset timed out\n"); 721 return -1; 722 } 723 724 return 0; 725 } 726 727 int miiphy_reset(const char *devname, unsigned char addr) 728 { 729 struct mii_dev *bus = miiphy_get_dev_by_name(devname); 730 struct phy_device *phydev; 731 732 /* 733 * miiphy_reset was only used on standard PHYs, so we'll fake it here. 734 * If later code tries to connect with the right interface, this will 735 * be corrected by get_phy_device in phy_connect() 736 */ 737 phydev = get_phy_device(bus, addr, PHY_INTERFACE_MODE_MII); 738 739 return phy_reset(phydev); 740 } 741 742 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask, 743 phy_interface_t interface) 744 { 745 /* Reset the bus */ 746 if (bus->reset) 747 bus->reset(bus); 748 749 /* Wait 15ms to make sure the PHY has come out of hard reset */ 750 udelay(15000); 751 return get_phy_device_by_mask(bus, phy_mask, interface); 752 } 753 754 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev) 755 { 756 /* Soft Reset the PHY */ 757 phy_reset(phydev); 758 if (phydev->dev) { 759 printf("%s:%d is connected to %s. Reconnecting to %s\n", 760 phydev->bus->name, phydev->addr, 761 phydev->dev->name, dev->name); 762 } 763 phydev->dev = dev; 764 debug("%s connected to %s\n", dev->name, phydev->drv->name); 765 } 766 767 struct phy_device *phy_connect(struct mii_dev *bus, int addr, 768 struct eth_device *dev, phy_interface_t interface) 769 { 770 struct phy_device *phydev; 771 772 phydev = phy_find_by_mask(bus, 1 << addr, interface); 773 if (phydev) 774 phy_connect_dev(phydev, dev); 775 else 776 printf("Could not get PHY for %s: addr %d\n", bus->name, addr); 777 return phydev; 778 } 779 780 /* 781 * Start the PHY. Returns 0 on success, or a negative error code. 782 */ 783 int phy_startup(struct phy_device *phydev) 784 { 785 if (phydev->drv->startup) 786 return phydev->drv->startup(phydev); 787 788 return 0; 789 } 790 791 static int __board_phy_config(struct phy_device *phydev) 792 { 793 if (phydev->drv->config) 794 return phydev->drv->config(phydev); 795 return 0; 796 } 797 798 int board_phy_config(struct phy_device *phydev) 799 __attribute__((weak, alias("__board_phy_config"))); 800 801 int phy_config(struct phy_device *phydev) 802 { 803 /* Invoke an optional board-specific helper */ 804 board_phy_config(phydev); 805 806 return 0; 807 } 808 809 int phy_shutdown(struct phy_device *phydev) 810 { 811 if (phydev->drv->shutdown) 812 phydev->drv->shutdown(phydev); 813 814 return 0; 815 } 816