1 /* 2 * Most of this source has been derived from the Linux USB 3 * project: 4 * (C) Copyright Linus Torvalds 1999 5 * (C) Copyright Johannes Erdfelt 1999-2001 6 * (C) Copyright Andreas Gal 1999 7 * (C) Copyright Gregory P. Smith 1999 8 * (C) Copyright Deti Fliegl 1999 (new USB architecture) 9 * (C) Copyright Randy Dunlap 2000 10 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id) 11 * (C) Copyright Yggdrasil Computing, Inc. 2000 12 * (usb_device_id matching changes by Adam J. Richter) 13 * 14 * Adapted for U-Boot: 15 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland 16 * 17 * SPDX-License-Identifier: GPL-2.0+ 18 */ 19 20 /**************************************************************************** 21 * HUB "Driver" 22 * Probes device for being a hub and configurate it 23 */ 24 25 #include <common.h> 26 #include <command.h> 27 #include <dm.h> 28 #include <errno.h> 29 #include <memalign.h> 30 #include <asm/processor.h> 31 #include <asm/unaligned.h> 32 #include <linux/ctype.h> 33 #include <asm/byteorder.h> 34 #ifdef CONFIG_SANDBOX 35 #include <asm/state.h> 36 #endif 37 #include <asm/unaligned.h> 38 #include <dm/root.h> 39 40 DECLARE_GLOBAL_DATA_PTR; 41 42 #include <usb.h> 43 #ifdef CONFIG_4xx 44 #include <asm/4xx_pci.h> 45 #endif 46 47 #define USB_BUFSIZ 512 48 49 #define HUB_SHORT_RESET_TIME 20 50 #define HUB_LONG_RESET_TIME 200 51 52 /* TODO(sjg@chromium.org): Remove this when CONFIG_DM_USB is defined */ 53 static struct usb_hub_device hub_dev[USB_MAX_HUB]; 54 static int usb_hub_index; 55 56 __weak void usb_hub_reset_devices(int port) 57 { 58 return; 59 } 60 61 static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) 62 { 63 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 64 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, 65 USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); 66 } 67 68 static int usb_clear_port_feature(struct usb_device *dev, int port, int feature) 69 { 70 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 71 USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, 72 port, NULL, 0, USB_CNTL_TIMEOUT); 73 } 74 75 static int usb_set_port_feature(struct usb_device *dev, int port, int feature) 76 { 77 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 78 USB_REQ_SET_FEATURE, USB_RT_PORT, feature, 79 port, NULL, 0, USB_CNTL_TIMEOUT); 80 } 81 82 static int usb_get_hub_status(struct usb_device *dev, void *data) 83 { 84 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 85 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, 86 data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); 87 } 88 89 int usb_get_port_status(struct usb_device *dev, int port, void *data) 90 { 91 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), 92 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, 93 data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); 94 } 95 96 97 static void usb_hub_power_on(struct usb_hub_device *hub) 98 { 99 int i; 100 struct usb_device *dev; 101 unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2; 102 const char *env; 103 104 dev = hub->pusb_dev; 105 106 debug("enabling power on all ports\n"); 107 for (i = 0; i < dev->maxchild; i++) { 108 usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); 109 debug("port %d returns %lX\n", i + 1, dev->status); 110 } 111 112 /* 113 * Wait for power to become stable, 114 * plus spec-defined max time for device to connect 115 * but allow this time to be increased via env variable as some 116 * devices break the spec and require longer warm-up times 117 */ 118 env = getenv("usb_pgood_delay"); 119 if (env) 120 pgood_delay = max(pgood_delay, 121 (unsigned)simple_strtol(env, NULL, 0)); 122 debug("pgood_delay=%dms\n", pgood_delay); 123 mdelay(pgood_delay + 1000); 124 } 125 126 void usb_hub_reset(void) 127 { 128 usb_hub_index = 0; 129 } 130 131 static struct usb_hub_device *usb_hub_allocate(void) 132 { 133 if (usb_hub_index < USB_MAX_HUB) 134 return &hub_dev[usb_hub_index++]; 135 136 printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB); 137 return NULL; 138 } 139 140 #define MAX_TRIES 5 141 142 static inline char *portspeed(int portstatus) 143 { 144 char *speed_str; 145 146 switch (portstatus & USB_PORT_STAT_SPEED_MASK) { 147 case USB_PORT_STAT_SUPER_SPEED: 148 speed_str = "5 Gb/s"; 149 break; 150 case USB_PORT_STAT_HIGH_SPEED: 151 speed_str = "480 Mb/s"; 152 break; 153 case USB_PORT_STAT_LOW_SPEED: 154 speed_str = "1.5 Mb/s"; 155 break; 156 default: 157 speed_str = "12 Mb/s"; 158 break; 159 } 160 161 return speed_str; 162 } 163 164 int legacy_hub_port_reset(struct usb_device *dev, int port, 165 unsigned short *portstat) 166 { 167 int err, tries; 168 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); 169 unsigned short portstatus, portchange; 170 int delay = HUB_SHORT_RESET_TIME; /* start with short reset delay */ 171 172 #ifdef CONFIG_DM_USB 173 debug("%s: resetting '%s' port %d...\n", __func__, dev->dev->name, 174 port + 1); 175 #else 176 debug("%s: resetting port %d...\n", __func__, port + 1); 177 #endif 178 for (tries = 0; tries < MAX_TRIES; tries++) { 179 err = usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); 180 if (err < 0) 181 return err; 182 183 mdelay(delay); 184 185 if (usb_get_port_status(dev, port + 1, portsts) < 0) { 186 debug("get_port_status failed status %lX\n", 187 dev->status); 188 return -1; 189 } 190 portstatus = le16_to_cpu(portsts->wPortStatus); 191 portchange = le16_to_cpu(portsts->wPortChange); 192 193 debug("portstatus %x, change %x, %s\n", portstatus, portchange, 194 portspeed(portstatus)); 195 196 debug("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \ 197 " USB_PORT_STAT_ENABLE %d\n", 198 (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, 199 (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, 200 (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); 201 202 /* 203 * Perhaps we should check for the following here: 204 * - C_CONNECTION hasn't been set. 205 * - CONNECTION is still set. 206 * 207 * Doing so would ensure that the device is still connected 208 * to the bus, and hasn't been unplugged or replaced while the 209 * USB bus reset was going on. 210 * 211 * However, if we do that, then (at least) a San Disk Ultra 212 * USB 3.0 16GB device fails to reset on (at least) an NVIDIA 213 * Tegra Jetson TK1 board. For some reason, the device appears 214 * to briefly drop off the bus when this second bus reset is 215 * executed, yet if we retry this loop, it'll eventually come 216 * back after another reset or two. 217 */ 218 219 if (portstatus & USB_PORT_STAT_ENABLE) 220 break; 221 222 /* Switch to long reset delay for the next round */ 223 delay = HUB_LONG_RESET_TIME; 224 } 225 226 if (tries == MAX_TRIES) { 227 debug("Cannot enable port %i after %i retries, " \ 228 "disabling port.\n", port + 1, MAX_TRIES); 229 debug("Maybe the USB cable is bad?\n"); 230 return -1; 231 } 232 233 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); 234 *portstat = portstatus; 235 return 0; 236 } 237 238 #ifdef CONFIG_DM_USB 239 int hub_port_reset(struct udevice *dev, int port, unsigned short *portstat) 240 { 241 struct usb_device *udev = dev_get_parent_priv(dev); 242 243 return legacy_hub_port_reset(udev, port, portstat); 244 } 245 #endif 246 247 int usb_hub_port_connect_change(struct usb_device *dev, int port) 248 { 249 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); 250 unsigned short portstatus; 251 int ret, speed; 252 253 /* Check status */ 254 ret = usb_get_port_status(dev, port + 1, portsts); 255 if (ret < 0) { 256 debug("get_port_status failed\n"); 257 return ret; 258 } 259 260 portstatus = le16_to_cpu(portsts->wPortStatus); 261 debug("portstatus %x, change %x, %s\n", 262 portstatus, 263 le16_to_cpu(portsts->wPortChange), 264 portspeed(portstatus)); 265 266 /* Clear the connection change status */ 267 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); 268 269 /* Disconnect any existing devices under this port */ 270 if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && 271 (!(portstatus & USB_PORT_STAT_ENABLE))) || 272 usb_device_has_child_on_port(dev, port)) { 273 debug("usb_disconnect(&hub->children[port]);\n"); 274 /* Return now if nothing is connected */ 275 if (!(portstatus & USB_PORT_STAT_CONNECTION)) 276 return -ENOTCONN; 277 } 278 279 /* Reset the port */ 280 ret = legacy_hub_port_reset(dev, port, &portstatus); 281 if (ret < 0) { 282 if (ret != -ENXIO) 283 printf("cannot reset port %i!?\n", port + 1); 284 return ret; 285 } 286 287 switch (portstatus & USB_PORT_STAT_SPEED_MASK) { 288 case USB_PORT_STAT_SUPER_SPEED: 289 speed = USB_SPEED_SUPER; 290 break; 291 case USB_PORT_STAT_HIGH_SPEED: 292 speed = USB_SPEED_HIGH; 293 break; 294 case USB_PORT_STAT_LOW_SPEED: 295 speed = USB_SPEED_LOW; 296 break; 297 default: 298 speed = USB_SPEED_FULL; 299 break; 300 } 301 302 #ifdef CONFIG_DM_USB 303 struct udevice *child; 304 305 ret = usb_scan_device(dev->dev, port + 1, speed, &child); 306 #else 307 struct usb_device *usb; 308 309 ret = usb_alloc_new_device(dev->controller, &usb); 310 if (ret) { 311 printf("cannot create new device: ret=%d", ret); 312 return ret; 313 } 314 315 dev->children[port] = usb; 316 usb->speed = speed; 317 usb->parent = dev; 318 usb->portnr = port + 1; 319 /* Run it through the hoops (find a driver, etc) */ 320 ret = usb_new_device(usb); 321 if (ret < 0) { 322 /* Woops, disable the port */ 323 usb_free_device(dev->controller); 324 dev->children[port] = NULL; 325 } 326 #endif 327 if (ret < 0) { 328 debug("hub: disabling port %d\n", port + 1); 329 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); 330 } 331 332 return ret; 333 } 334 335 336 static int usb_hub_configure(struct usb_device *dev) 337 { 338 int i, length; 339 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ); 340 unsigned char *bitmap; 341 short hubCharacteristics; 342 struct usb_hub_descriptor *descriptor; 343 struct usb_hub_device *hub; 344 __maybe_unused struct usb_hub_status *hubsts; 345 int ret; 346 347 /* "allocate" Hub device */ 348 hub = usb_hub_allocate(); 349 if (hub == NULL) 350 return -ENOMEM; 351 hub->pusb_dev = dev; 352 /* Get the the hub descriptor */ 353 ret = usb_get_hub_descriptor(dev, buffer, 4); 354 if (ret < 0) { 355 debug("usb_hub_configure: failed to get hub " \ 356 "descriptor, giving up %lX\n", dev->status); 357 return ret; 358 } 359 descriptor = (struct usb_hub_descriptor *)buffer; 360 361 length = min_t(int, descriptor->bLength, 362 sizeof(struct usb_hub_descriptor)); 363 364 ret = usb_get_hub_descriptor(dev, buffer, length); 365 if (ret < 0) { 366 debug("usb_hub_configure: failed to get hub " \ 367 "descriptor 2nd giving up %lX\n", dev->status); 368 return ret; 369 } 370 memcpy((unsigned char *)&hub->desc, buffer, length); 371 /* adjust 16bit values */ 372 put_unaligned(le16_to_cpu(get_unaligned( 373 &descriptor->wHubCharacteristics)), 374 &hub->desc.wHubCharacteristics); 375 /* set the bitmap */ 376 bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0]; 377 /* devices not removable by default */ 378 memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); 379 bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0]; 380 memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ 381 382 for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) 383 hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i]; 384 385 for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) 386 hub->desc.PortPowerCtrlMask[i] = descriptor->PortPowerCtrlMask[i]; 387 388 dev->maxchild = descriptor->bNbrPorts; 389 debug("%d ports detected\n", dev->maxchild); 390 391 hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics); 392 switch (hubCharacteristics & HUB_CHAR_LPSM) { 393 case 0x00: 394 debug("ganged power switching\n"); 395 break; 396 case 0x01: 397 debug("individual port power switching\n"); 398 break; 399 case 0x02: 400 case 0x03: 401 debug("unknown reserved power switching mode\n"); 402 break; 403 } 404 405 if (hubCharacteristics & HUB_CHAR_COMPOUND) 406 debug("part of a compound device\n"); 407 else 408 debug("standalone hub\n"); 409 410 switch (hubCharacteristics & HUB_CHAR_OCPM) { 411 case 0x00: 412 debug("global over-current protection\n"); 413 break; 414 case 0x08: 415 debug("individual port over-current protection\n"); 416 break; 417 case 0x10: 418 case 0x18: 419 debug("no over-current protection\n"); 420 break; 421 } 422 423 debug("power on to power good time: %dms\n", 424 descriptor->bPwrOn2PwrGood * 2); 425 debug("hub controller current requirement: %dmA\n", 426 descriptor->bHubContrCurrent); 427 428 for (i = 0; i < dev->maxchild; i++) 429 debug("port %d is%s removable\n", i + 1, 430 hub->desc.DeviceRemovable[(i + 1) / 8] & \ 431 (1 << ((i + 1) % 8)) ? " not" : ""); 432 433 if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { 434 debug("usb_hub_configure: failed to get Status - " \ 435 "too long: %d\n", descriptor->bLength); 436 return -EFBIG; 437 } 438 439 ret = usb_get_hub_status(dev, buffer); 440 if (ret < 0) { 441 debug("usb_hub_configure: failed to get Status %lX\n", 442 dev->status); 443 return ret; 444 } 445 446 #ifdef DEBUG 447 hubsts = (struct usb_hub_status *)buffer; 448 #endif 449 450 debug("get_hub_status returned status %X, change %X\n", 451 le16_to_cpu(hubsts->wHubStatus), 452 le16_to_cpu(hubsts->wHubChange)); 453 debug("local power source is %s\n", 454 (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \ 455 "lost (inactive)" : "good"); 456 debug("%sover-current condition exists\n", 457 (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \ 458 "" : "no "); 459 usb_hub_power_on(hub); 460 461 /* 462 * Reset any devices that may be in a bad state when applying 463 * the power. This is a __weak function. Resetting of the devices 464 * should occur in the board file of the device. 465 */ 466 for (i = 0; i < dev->maxchild; i++) 467 usb_hub_reset_devices(i + 1); 468 469 for (i = 0; i < dev->maxchild; i++) { 470 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1); 471 unsigned short portstatus, portchange; 472 int ret; 473 ulong start = get_timer(0); 474 uint delay = CONFIG_SYS_HZ; 475 476 #ifdef CONFIG_SANDBOX 477 if (state_get_skip_delays()) 478 delay = 0; 479 #endif 480 #ifdef CONFIG_DM_USB 481 debug("\n\nScanning '%s' port %d\n", dev->dev->name, i + 1); 482 #else 483 debug("\n\nScanning port %d\n", i + 1); 484 #endif 485 /* 486 * Wait for (whichever finishes first) 487 * - A maximum of 10 seconds 488 * This is a purely observational value driven by connecting 489 * a few broken pen drives and taking the max * 1.5 approach 490 * - connection_change and connection state to report same 491 * state 492 */ 493 do { 494 ret = usb_get_port_status(dev, i + 1, portsts); 495 if (ret < 0) { 496 debug("get_port_status failed\n"); 497 break; 498 } 499 500 portstatus = le16_to_cpu(portsts->wPortStatus); 501 portchange = le16_to_cpu(portsts->wPortChange); 502 503 /* No connection change happened, wait a bit more. */ 504 if (!(portchange & USB_PORT_STAT_C_CONNECTION)) 505 continue; 506 507 /* Test if the connection came up, and if so, exit. */ 508 if (portstatus & USB_PORT_STAT_CONNECTION) 509 break; 510 511 } while (get_timer(start) < delay); 512 513 if (ret < 0) 514 continue; 515 516 debug("Port %d Status %X Change %X\n", 517 i + 1, portstatus, portchange); 518 519 if (portchange & USB_PORT_STAT_C_CONNECTION) { 520 debug("port %d connection change\n", i + 1); 521 usb_hub_port_connect_change(dev, i); 522 } 523 if (portchange & USB_PORT_STAT_C_ENABLE) { 524 debug("port %d enable change, status %x\n", 525 i + 1, portstatus); 526 usb_clear_port_feature(dev, i + 1, 527 USB_PORT_FEAT_C_ENABLE); 528 /* 529 * The following hack causes a ghost device problem 530 * to Faraday EHCI 531 */ 532 #ifndef CONFIG_USB_EHCI_FARADAY 533 /* EM interference sometimes causes bad shielded USB 534 * devices to be shutdown by the hub, this hack enables 535 * them again. Works at least with mouse driver */ 536 if (!(portstatus & USB_PORT_STAT_ENABLE) && 537 (portstatus & USB_PORT_STAT_CONNECTION) && 538 usb_device_has_child_on_port(dev, i)) { 539 debug("already running port %i " \ 540 "disabled by hub (EMI?), " \ 541 "re-enabling...\n", i + 1); 542 usb_hub_port_connect_change(dev, i); 543 } 544 #endif 545 } 546 if (portstatus & USB_PORT_STAT_SUSPEND) { 547 debug("port %d suspend change\n", i + 1); 548 usb_clear_port_feature(dev, i + 1, 549 USB_PORT_FEAT_SUSPEND); 550 } 551 552 if (portchange & USB_PORT_STAT_C_OVERCURRENT) { 553 debug("port %d over-current change\n", i + 1); 554 usb_clear_port_feature(dev, i + 1, 555 USB_PORT_FEAT_C_OVER_CURRENT); 556 usb_hub_power_on(hub); 557 } 558 559 if (portchange & USB_PORT_STAT_C_RESET) { 560 debug("port %d reset change\n", i + 1); 561 usb_clear_port_feature(dev, i + 1, 562 USB_PORT_FEAT_C_RESET); 563 } 564 } /* end for i all ports */ 565 566 return 0; 567 } 568 569 static int usb_hub_check(struct usb_device *dev, int ifnum) 570 { 571 struct usb_interface *iface; 572 struct usb_endpoint_descriptor *ep = NULL; 573 574 iface = &dev->config.if_desc[ifnum]; 575 /* Is it a hub? */ 576 if (iface->desc.bInterfaceClass != USB_CLASS_HUB) 577 goto err; 578 /* Some hubs have a subclass of 1, which AFAICT according to the */ 579 /* specs is not defined, but it works */ 580 if ((iface->desc.bInterfaceSubClass != 0) && 581 (iface->desc.bInterfaceSubClass != 1)) 582 goto err; 583 /* Multiple endpoints? What kind of mutant ninja-hub is this? */ 584 if (iface->desc.bNumEndpoints != 1) 585 goto err; 586 ep = &iface->ep_desc[0]; 587 /* Output endpoint? Curiousier and curiousier.. */ 588 if (!(ep->bEndpointAddress & USB_DIR_IN)) 589 goto err; 590 /* If it's not an interrupt endpoint, we'd better punt! */ 591 if ((ep->bmAttributes & 3) != 3) 592 goto err; 593 /* We found a hub */ 594 debug("USB hub found\n"); 595 return 0; 596 597 err: 598 debug("USB hub not found: bInterfaceClass=%d, bInterfaceSubClass=%d, bNumEndpoints=%d\n", 599 iface->desc.bInterfaceClass, iface->desc.bInterfaceSubClass, 600 iface->desc.bNumEndpoints); 601 if (ep) { 602 debug(" bEndpointAddress=%#x, bmAttributes=%d", 603 ep->bEndpointAddress, ep->bmAttributes); 604 } 605 606 return -ENOENT; 607 } 608 609 int usb_hub_probe(struct usb_device *dev, int ifnum) 610 { 611 int ret; 612 613 ret = usb_hub_check(dev, ifnum); 614 if (ret) 615 return 0; 616 ret = usb_hub_configure(dev); 617 return ret; 618 } 619 620 #ifdef CONFIG_DM_USB 621 int usb_hub_scan(struct udevice *hub) 622 { 623 struct usb_device *udev = dev_get_parent_priv(hub); 624 625 return usb_hub_configure(udev); 626 } 627 628 static int usb_hub_post_bind(struct udevice *dev) 629 { 630 /* Scan the bus for devices */ 631 return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); 632 } 633 634 static int usb_hub_post_probe(struct udevice *dev) 635 { 636 debug("%s\n", __func__); 637 return usb_hub_scan(dev); 638 } 639 640 static const struct udevice_id usb_hub_ids[] = { 641 { .compatible = "usb-hub" }, 642 { } 643 }; 644 645 U_BOOT_DRIVER(usb_generic_hub) = { 646 .name = "usb_hub", 647 .id = UCLASS_USB_HUB, 648 .of_match = usb_hub_ids, 649 .flags = DM_FLAG_ALLOC_PRIV_DMA, 650 }; 651 652 UCLASS_DRIVER(usb_hub) = { 653 .id = UCLASS_USB_HUB, 654 .name = "usb_hub", 655 .post_bind = usb_hub_post_bind, 656 .post_probe = usb_hub_post_probe, 657 .child_pre_probe = usb_child_pre_probe, 658 .per_child_auto_alloc_size = sizeof(struct usb_device), 659 .per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata), 660 }; 661 662 static const struct usb_device_id hub_id_table[] = { 663 { 664 .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS, 665 .bDeviceClass = USB_CLASS_HUB 666 }, 667 { } /* Terminating entry */ 668 }; 669 670 U_BOOT_USB_DEVICE(usb_generic_hub, hub_id_table); 671 672 #endif 673