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 u32 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 gblpa &= phy_read(phydev, 290 MDIO_DEVAD_NONE, MII_CTRL1000) << 2; 291 } 292 293 /* Set the baseline so we only have to set them 294 * if they're different 295 */ 296 phydev->speed = SPEED_10; 297 phydev->duplex = DUPLEX_HALF; 298 299 /* Check the gigabit fields */ 300 if (gblpa & (PHY_1000BTSR_1000FD | PHY_1000BTSR_1000HD)) { 301 phydev->speed = SPEED_1000; 302 303 if (gblpa & PHY_1000BTSR_1000FD) 304 phydev->duplex = DUPLEX_FULL; 305 306 /* We're done! */ 307 return 0; 308 } 309 310 lpa = phy_read(phydev, MDIO_DEVAD_NONE, MII_ADVERTISE); 311 lpa &= phy_read(phydev, MDIO_DEVAD_NONE, MII_LPA); 312 313 if (lpa & (LPA_100FULL | LPA_100HALF)) { 314 phydev->speed = SPEED_100; 315 316 if (lpa & LPA_100FULL) 317 phydev->duplex = DUPLEX_FULL; 318 319 } else if (lpa & LPA_10FULL) 320 phydev->duplex = DUPLEX_FULL; 321 322 /* 323 * Extended status may indicate that the PHY supports 324 * 1000BASE-T/X even though the 1000BASE-T registers 325 * are missing. In this case we can't tell whether the 326 * peer also supports it, so we only check extended 327 * status if the 1000BASE-T registers are actually 328 * missing. 329 */ 330 if ((mii_reg & BMSR_ESTATEN) && !(mii_reg & BMSR_ERCAP)) 331 estatus = phy_read(phydev, MDIO_DEVAD_NONE, 332 MII_ESTATUS); 333 334 if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_XHALF | 335 ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) { 336 phydev->speed = SPEED_1000; 337 if (estatus & (ESTATUS_1000_XFULL | ESTATUS_1000_TFULL)) 338 phydev->duplex = DUPLEX_FULL; 339 } 340 341 } else { 342 u32 bmcr = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMCR); 343 344 phydev->speed = SPEED_10; 345 phydev->duplex = DUPLEX_HALF; 346 347 if (bmcr & BMCR_FULLDPLX) 348 phydev->duplex = DUPLEX_FULL; 349 350 if (bmcr & BMCR_SPEED1000) 351 phydev->speed = SPEED_1000; 352 else if (bmcr & BMCR_SPEED100) 353 phydev->speed = SPEED_100; 354 } 355 356 return 0; 357 } 358 359 int genphy_config(struct phy_device *phydev) 360 { 361 int val; 362 u32 features; 363 364 /* For now, I'll claim that the generic driver supports 365 * all possible port types */ 366 features = (SUPPORTED_TP | SUPPORTED_MII 367 | SUPPORTED_AUI | SUPPORTED_FIBRE | 368 SUPPORTED_BNC); 369 370 /* Do we support autonegotiation? */ 371 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_BMSR); 372 373 if (val < 0) 374 return val; 375 376 if (val & BMSR_ANEGCAPABLE) 377 features |= SUPPORTED_Autoneg; 378 379 if (val & BMSR_100FULL) 380 features |= SUPPORTED_100baseT_Full; 381 if (val & BMSR_100HALF) 382 features |= SUPPORTED_100baseT_Half; 383 if (val & BMSR_10FULL) 384 features |= SUPPORTED_10baseT_Full; 385 if (val & BMSR_10HALF) 386 features |= SUPPORTED_10baseT_Half; 387 388 if (val & BMSR_ESTATEN) { 389 val = phy_read(phydev, MDIO_DEVAD_NONE, MII_ESTATUS); 390 391 if (val < 0) 392 return val; 393 394 if (val & ESTATUS_1000_TFULL) 395 features |= SUPPORTED_1000baseT_Full; 396 if (val & ESTATUS_1000_THALF) 397 features |= SUPPORTED_1000baseT_Half; 398 if (val & ESTATUS_1000_XFULL) 399 features |= SUPPORTED_1000baseX_Full; 400 if (val & ESTATUS_1000_XHALF) 401 features |= SUPPORTED_1000baseX_Half; 402 } 403 404 phydev->supported = features; 405 phydev->advertising = features; 406 407 genphy_config_aneg(phydev); 408 409 return 0; 410 } 411 412 int genphy_startup(struct phy_device *phydev) 413 { 414 genphy_update_link(phydev); 415 genphy_parse_link(phydev); 416 417 return 0; 418 } 419 420 int genphy_shutdown(struct phy_device *phydev) 421 { 422 return 0; 423 } 424 425 static struct phy_driver genphy_driver = { 426 .uid = 0xffffffff, 427 .mask = 0xffffffff, 428 .name = "Generic PHY", 429 .features = 0, 430 .config = genphy_config, 431 .startup = genphy_startup, 432 .shutdown = genphy_shutdown, 433 }; 434 435 static LIST_HEAD(phy_drivers); 436 437 int phy_init(void) 438 { 439 #ifdef CONFIG_PHY_ATHEROS 440 phy_atheros_init(); 441 #endif 442 #ifdef CONFIG_PHY_BROADCOM 443 phy_broadcom_init(); 444 #endif 445 #ifdef CONFIG_PHY_DAVICOM 446 phy_davicom_init(); 447 #endif 448 #ifdef CONFIG_PHY_ET1011C 449 phy_et1011c_init(); 450 #endif 451 #ifdef CONFIG_PHY_ICPLUS 452 phy_icplus_init(); 453 #endif 454 #ifdef CONFIG_PHY_LXT 455 phy_lxt_init(); 456 #endif 457 #ifdef CONFIG_PHY_MARVELL 458 phy_marvell_init(); 459 #endif 460 #ifdef CONFIG_PHY_MICREL 461 phy_micrel_init(); 462 #endif 463 #ifdef CONFIG_PHY_NATSEMI 464 phy_natsemi_init(); 465 #endif 466 #ifdef CONFIG_PHY_REALTEK 467 phy_realtek_init(); 468 #endif 469 #ifdef CONFIG_PHY_SMSC 470 phy_smsc_init(); 471 #endif 472 #ifdef CONFIG_PHY_TERANETICS 473 phy_teranetics_init(); 474 #endif 475 #ifdef CONFIG_PHY_VITESSE 476 phy_vitesse_init(); 477 #endif 478 479 return 0; 480 } 481 482 int phy_register(struct phy_driver *drv) 483 { 484 INIT_LIST_HEAD(&drv->list); 485 list_add_tail(&drv->list, &phy_drivers); 486 487 return 0; 488 } 489 490 static int phy_probe(struct phy_device *phydev) 491 { 492 int err = 0; 493 494 phydev->advertising = phydev->supported = phydev->drv->features; 495 phydev->mmds = phydev->drv->mmds; 496 497 if (phydev->drv->probe) 498 err = phydev->drv->probe(phydev); 499 500 return err; 501 } 502 503 static struct phy_driver *generic_for_interface(phy_interface_t interface) 504 { 505 #ifdef CONFIG_PHYLIB_10G 506 if (is_10g_interface(interface)) 507 return &gen10g_driver; 508 #endif 509 510 return &genphy_driver; 511 } 512 513 static struct phy_driver *get_phy_driver(struct phy_device *phydev, 514 phy_interface_t interface) 515 { 516 struct list_head *entry; 517 int phy_id = phydev->phy_id; 518 struct phy_driver *drv = NULL; 519 520 list_for_each(entry, &phy_drivers) { 521 drv = list_entry(entry, struct phy_driver, list); 522 if ((drv->uid & drv->mask) == (phy_id & drv->mask)) 523 return drv; 524 } 525 526 /* If we made it here, there's no driver for this PHY */ 527 return generic_for_interface(interface); 528 } 529 530 static struct phy_device *phy_device_create(struct mii_dev *bus, int addr, 531 int phy_id, 532 phy_interface_t interface) 533 { 534 struct phy_device *dev; 535 536 /* We allocate the device, and initialize the 537 * default values */ 538 dev = malloc(sizeof(*dev)); 539 if (!dev) { 540 printf("Failed to allocate PHY device for %s:%d\n", 541 bus->name, addr); 542 return NULL; 543 } 544 545 memset(dev, 0, sizeof(*dev)); 546 547 dev->duplex = -1; 548 dev->link = 1; 549 dev->interface = interface; 550 551 dev->autoneg = AUTONEG_ENABLE; 552 553 dev->addr = addr; 554 dev->phy_id = phy_id; 555 dev->bus = bus; 556 557 dev->drv = get_phy_driver(dev, interface); 558 559 phy_probe(dev); 560 561 bus->phymap[addr] = dev; 562 563 return dev; 564 } 565 566 /** 567 * get_phy_id - reads the specified addr for its ID. 568 * @bus: the target MII bus 569 * @addr: PHY address on the MII bus 570 * @phy_id: where to store the ID retrieved. 571 * 572 * Description: Reads the ID registers of the PHY at @addr on the 573 * @bus, stores it in @phy_id and returns zero on success. 574 */ 575 static int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id) 576 { 577 int phy_reg; 578 579 /* Grab the bits from PHYIR1, and put them 580 * in the upper half */ 581 phy_reg = bus->read(bus, addr, devad, MII_PHYSID1); 582 583 if (phy_reg < 0) 584 return -EIO; 585 586 *phy_id = (phy_reg & 0xffff) << 16; 587 588 /* Grab the bits from PHYIR2, and put them in the lower half */ 589 phy_reg = bus->read(bus, addr, devad, MII_PHYSID2); 590 591 if (phy_reg < 0) 592 return -EIO; 593 594 *phy_id |= (phy_reg & 0xffff); 595 596 return 0; 597 } 598 599 static struct phy_device *create_phy_by_mask(struct mii_dev *bus, 600 unsigned phy_mask, int devad, phy_interface_t interface) 601 { 602 u32 phy_id = 0xffffffff; 603 while (phy_mask) { 604 int addr = ffs(phy_mask) - 1; 605 int r = get_phy_id(bus, addr, devad, &phy_id); 606 if (r < 0) 607 return ERR_PTR(r); 608 /* If the PHY ID is mostly f's, we didn't find anything */ 609 if ((phy_id & 0x1fffffff) != 0x1fffffff) 610 return phy_device_create(bus, addr, phy_id, interface); 611 phy_mask &= ~(1 << addr); 612 } 613 return NULL; 614 } 615 616 static struct phy_device *search_for_existing_phy(struct mii_dev *bus, 617 unsigned phy_mask, phy_interface_t interface) 618 { 619 /* If we have one, return the existing device, with new interface */ 620 while (phy_mask) { 621 int addr = ffs(phy_mask) - 1; 622 if (bus->phymap[addr]) { 623 bus->phymap[addr]->interface = interface; 624 return bus->phymap[addr]; 625 } 626 phy_mask &= ~(1 << addr); 627 } 628 return NULL; 629 } 630 631 static struct phy_device *get_phy_device_by_mask(struct mii_dev *bus, 632 unsigned phy_mask, phy_interface_t interface) 633 { 634 int i; 635 struct phy_device *phydev; 636 637 phydev = search_for_existing_phy(bus, phy_mask, interface); 638 if (phydev) 639 return phydev; 640 /* Try Standard (ie Clause 22) access */ 641 /* Otherwise we have to try Clause 45 */ 642 for (i = 0; i < 5; i++) { 643 phydev = create_phy_by_mask(bus, phy_mask, 644 i ? i : MDIO_DEVAD_NONE, interface); 645 if (IS_ERR(phydev)) 646 return NULL; 647 if (phydev) 648 return phydev; 649 } 650 printf("Phy not found\n"); 651 return phy_device_create(bus, ffs(phy_mask) - 1, 0xffffffff, interface); 652 } 653 654 /** 655 * get_phy_device - reads the specified PHY device and returns its @phy_device struct 656 * @bus: the target MII bus 657 * @addr: PHY address on the MII bus 658 * 659 * Description: Reads the ID registers of the PHY at @addr on the 660 * @bus, then allocates and returns the phy_device to represent it. 661 */ 662 static struct phy_device *get_phy_device(struct mii_dev *bus, int addr, 663 phy_interface_t interface) 664 { 665 return get_phy_device_by_mask(bus, 1 << addr, interface); 666 } 667 668 int phy_reset(struct phy_device *phydev) 669 { 670 int reg; 671 int timeout = 500; 672 int devad = MDIO_DEVAD_NONE; 673 674 #ifdef CONFIG_PHYLIB_10G 675 /* If it's 10G, we need to issue reset through one of the MMDs */ 676 if (is_10g_interface(phydev->interface)) { 677 if (!phydev->mmds) 678 gen10g_discover_mmds(phydev); 679 680 devad = ffs(phydev->mmds) - 1; 681 } 682 #endif 683 684 reg = phy_read(phydev, devad, MII_BMCR); 685 if (reg < 0) { 686 debug("PHY status read failed\n"); 687 return -1; 688 } 689 690 reg |= BMCR_RESET; 691 692 if (phy_write(phydev, devad, MII_BMCR, reg) < 0) { 693 debug("PHY reset failed\n"); 694 return -1; 695 } 696 697 #ifdef CONFIG_PHY_RESET_DELAY 698 udelay(CONFIG_PHY_RESET_DELAY); /* Intel LXT971A needs this */ 699 #endif 700 /* 701 * Poll the control register for the reset bit to go to 0 (it is 702 * auto-clearing). This should happen within 0.5 seconds per the 703 * IEEE spec. 704 */ 705 while ((reg & BMCR_RESET) && timeout--) { 706 reg = phy_read(phydev, devad, MII_BMCR); 707 708 if (reg < 0) { 709 debug("PHY status read failed\n"); 710 return -1; 711 } 712 udelay(1000); 713 } 714 715 if (reg & BMCR_RESET) { 716 puts("PHY reset timed out\n"); 717 return -1; 718 } 719 720 return 0; 721 } 722 723 int miiphy_reset(const char *devname, unsigned char addr) 724 { 725 struct mii_dev *bus = miiphy_get_dev_by_name(devname); 726 struct phy_device *phydev; 727 728 /* 729 * miiphy_reset was only used on standard PHYs, so we'll fake it here. 730 * If later code tries to connect with the right interface, this will 731 * be corrected by get_phy_device in phy_connect() 732 */ 733 phydev = get_phy_device(bus, addr, PHY_INTERFACE_MODE_MII); 734 735 return phy_reset(phydev); 736 } 737 738 struct phy_device *phy_find_by_mask(struct mii_dev *bus, unsigned phy_mask, 739 phy_interface_t interface) 740 { 741 /* Reset the bus */ 742 if (bus->reset) 743 bus->reset(bus); 744 745 /* Wait 15ms to make sure the PHY has come out of hard reset */ 746 udelay(15000); 747 return get_phy_device_by_mask(bus, phy_mask, interface); 748 } 749 750 void phy_connect_dev(struct phy_device *phydev, struct eth_device *dev) 751 { 752 /* Soft Reset the PHY */ 753 phy_reset(phydev); 754 if (phydev->dev) { 755 printf("%s:%d is connected to %s. Reconnecting to %s\n", 756 phydev->bus->name, phydev->addr, 757 phydev->dev->name, dev->name); 758 } 759 phydev->dev = dev; 760 debug("%s connected to %s\n", dev->name, phydev->drv->name); 761 } 762 763 struct phy_device *phy_connect(struct mii_dev *bus, int addr, 764 struct eth_device *dev, phy_interface_t interface) 765 { 766 struct phy_device *phydev; 767 768 phydev = phy_find_by_mask(bus, 1 << addr, interface); 769 if (phydev) 770 phy_connect_dev(phydev, dev); 771 else 772 printf("Could not get PHY for %s: addr %d\n", bus->name, addr); 773 return phydev; 774 } 775 776 /* 777 * Start the PHY. Returns 0 on success, or a negative error code. 778 */ 779 int phy_startup(struct phy_device *phydev) 780 { 781 if (phydev->drv->startup) 782 return phydev->drv->startup(phydev); 783 784 return 0; 785 } 786 787 static int __board_phy_config(struct phy_device *phydev) 788 { 789 if (phydev->drv->config) 790 return phydev->drv->config(phydev); 791 return 0; 792 } 793 794 int board_phy_config(struct phy_device *phydev) 795 __attribute__((weak, alias("__board_phy_config"))); 796 797 int phy_config(struct phy_device *phydev) 798 { 799 /* Invoke an optional board-specific helper */ 800 board_phy_config(phydev); 801 802 return 0; 803 } 804 805 int phy_shutdown(struct phy_device *phydev) 806 { 807 if (phydev->drv->shutdown) 808 phydev->drv->shutdown(phydev); 809 810 return 0; 811 } 812