sysfs-bus-usb - OpenGrok cross reference for /openbmc/linux/Documentation/ABI/testing/sysfs-bus-usb

1 What:		/sys/bus/usb/devices/<INTERFACE>/authorized
9 		by writing INTERFACE to /sys/bus/usb/drivers_probe
15 What:		/sys/bus/usb/devices/usbX/interface_authorized_default
22 What:		/sys/bus/usb/device/.../authorized
29 		USB devices are authorized.
31 What:		/sys/bus/usb/drivers/.../new_id
33 Contact:	linux-usb@vger.kernel.org
36 		dynamically add a new device ID to a USB device driver.
48 		  # echo "8086 10f5" > /sys/bus/usb/drivers/foo/new_id
53 		  # echo "0458 7045 0 0458 704c" > /sys/bus/usb/drivers/foo/new_id
59 		  # cat /sys/bus/usb/drivers/foo/new_id
67 What:		/sys/bus/usb-serial/drivers/.../new_id
69 Contact:	linux-usb@vger.kernel.org
71 		For serial USB drivers, this attribute appears under the
72 		extra bus folder "usb-serial" in sysfs; apart from that
74 		"/sys/bus/usb/drivers/.../new_id" apply.
76 What:		/sys/bus/usb/drivers/.../remove_id
87 		# echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id
91 		"/sys/bus/usb/drivers/.../new_id"
93 What:		/sys/bus/usb/devices/.../power/usb2_hardware_lpm
97 		If CONFIG_PM is set and a USB 2.0 lpm-capable device is plugged
101 		device and the USB device directory will contain a file named
107 What:		/sys/bus/usb/devices/.../power/usb3_hardware_lpm_u1
108 		/sys/bus/usb/devices/.../power/usb3_hardware_lpm_u2
113 		If CONFIG_PM is set and a USB 3.0 lpm-capable device is plugged
117 		USB3 hardware LPM will be enabled for the device and the USB
123 What:		/sys/bus/usb/devices/.../ltm_capable
127 		USB 3.0 devices may optionally support Latency Tolerance
132 		The file will be present for all speeds of USB devices, and will
133 		always read "no" for USB 1.1 and USB 2.0 devices.
135 What:		/sys/bus/usb/devices/<INTERFACE>/wireless_status
139 		Some USB devices use a USB receiver dongle to communicate
152 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>
156 		The /sys/bus/usb/devices/.../<hub_interface>/port<X>
157 		is usb port device's sysfs directory.
159 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/connect_type
163 		Some platforms provide usb port connect types through ACPI.
168 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/location
172 		Some platforms provide usb port physical location through
178 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/quirks
183 		connected on a specific port (e.g. non-standard USB port like
190 		   as it is considerably faster (it only causes one USB reset
198 		   USB 2.0 specification, instead of the 50 ms that are normally
202 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/over_current_count
216 		  OVER_CURRENT_PORT=/sys/bus/usb/devices/.../<hub_interface>/port<X>
219 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/usb3_lpm_permit
225 		effect both before and after a usb device is enumerated. Supported
230 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/connector
234 		Link to the USB Type-C connector when available. This link is
235 		only created when USB Type-C Connector Class is enabled, and
239 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/disable
243 		This file controls the state of a USB port, including
250 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/early_stop
254 		Some USB hosts have some watchdog mechanisms so that the device
261 What:		/sys/bus/usb/devices/.../<hub_interface>/port<X>/state
265 		Indicates current state of the USB device attached to the port.
271 What:		/sys/bus/usb/devices/.../power/usb2_lpm_l1_timeout
275 		USB 2.0 devices may support hardware link power management (LPM)
282 What:		/sys/bus/usb/devices/.../power/usb2_lpm_besl
286 		USB 2.0 devices that support hardware link power management (LPM)
296 		USB 2.0 ECN Errata for Link Power Management, section 4.10)
298 What:		/sys/bus/usb/devices/.../rx_lanes
303 		USB 3.2 adds Dual-lane support, 2 rx and 2 tx lanes over Type-C.
305 		direction. Devices before USB 3.2 are single lane (rx_lanes = 1)
307 What:		/sys/bus/usb/devices/.../tx_lanes
312 		USB 3.2 adds Dual-lane support, 2 rx and 2 tx -lanes over Type-C.
314 		direction. Devices before USB 3.2 are single lane (tx_lanes = 1)
316 What:		/sys/bus/usb/devices/usbX/bAlternateSetting
320 		See USB specs for its meaning.
322 What:		/sys/bus/usb/devices/usbX/bcdDevice
326 		See USB specs for its meaning.
328 What:		/sys/bus/usb/devices/usbX/bConfigurationValue
330 		While a USB device typically have just one configuration
340 			/sys/bus/usb/devices/usbX/bNumConfigurations
342 		See USB specs for its meaning.
344 What:		/sys/bus/usb/devices/usbX/bDeviceClass
348 		See USB specs for its meaning.
350 What:		/sys/bus/usb/devices/usbX/bDeviceProtocol
354 		See USB specs for its meaning.
356 What:		/sys/bus/usb/devices/usbX/bDeviceSubClass
360 		See USB specs for its meaning.
362 What:		/sys/bus/usb/devices/usbX/bInterfaceClass
366 		See USB specs for its meaning.
368 What:		/sys/bus/usb/devices/usbX/bInterfaceNumber
372 		See USB specs for its meaning.
374 What:		/sys/bus/usb/devices/usbX/bInterfaceProtocol
378 		See USB specs for its meaning.
380 What:		/sys/bus/usb/devices/usbX/bInterfaceSubClass
384 		See USB specs for its meaning.
386 What:		/sys/bus/usb/devices/usbX/bmAttributes
390 		See USB specs for its meaning.
392 What:		/sys/bus/usb/devices/usbX/bMaxPacketSize0
396 		See USB specs for its meaning.
398 What:		/sys/bus/usb/devices/usbX/bMaxPower
403 What:		/sys/bus/usb/devices/usbX/bNumConfigurations
408 			/sys/bus/usb/devices/usbX/bConfigurationValue
410 		See USB specs for its meaning.
412 What:		/sys/bus/usb/devices/usbX/bNumEndpoints
416 		See USB specs for its meaning.
418 What:		/sys/bus/usb/devices/usbX/bNumInterfaces
422 What:		/sys/bus/usb/devices/usbX/busnum
426 What:		/sys/bus/usb/devices/usbX/configuration
432 What:		/sys/bus/usb/devices/usbX/descriptors
436 What:		/sys/bus/usb/devices/usbX/idProduct
440 What:		/sys/bus/usb/devices/usbX/idVendor
444 What:		/sys/bus/usb/devices/usbX/devspec
448 What:		/sys/bus/usb/devices/usbX/avoid_reset_quirk
452 		If the value is 1, enable a USB quirk that prevents this
457 What:		/sys/bus/usb/devices/usbX/devnum
459 		USB interface device number, in decimal.
461 What:		/sys/bus/usb/devices/usbX/devpath
463 		String containing the USB interface device path.
465 What:		/sys/bus/usb/devices/usbX/manufacturer
470 What:		/sys/bus/usb/devices/usbX/maxchild
472 		Number of ports of an USB hub
474 What:		/sys/bus/usb/devices/usbX/persist
478 What:		/sys/bus/usb/devices/usbX/product
483 What:		/sys/bus/usb/devices/usbX/speed
485 		Shows the device's max speed, according to the USB version,
499 What:		/sys/bus/usb/devices/usbX/supports_autosuspend
504 What:		/sys/bus/usb/devices/usbX/urbnum
508 What:		/sys/bus/usb/devices/usbX/version
510 		String containing the USB device version, as encoded
513 What:		/sys/bus/usb/devices/usbX/power/autosuspend
520 What:		/sys/bus/usb/devices/usbX/power/active_duration
524 What:		/sys/bus/usb/devices/usbX/power/connected_duration
528 What:		/sys/bus/usb/devices/usbX/power/level
531 What:		/sys/bus/usb/devices/usbX/ep_<N>/bEndpointAddress
537 			/sys/bus/usb/devices/usbX/ep_<N>/direction
539 		See USB specs for its meaning.
541 What:		/sys/bus/usb/devices/usbX/ep_<N>/bInterval
545 		of the USB. Also shown in time units at
546 		/sys/bus/usb/devices/usbX/ep_<N>/interval.
548 What:		/sys/bus/usb/devices/usbX/ep_<N>/bLength
552 What:		/sys/bus/usb/devices/usbX/ep_<N>/bmAttributes
558 			/sys/bus/usb/devices/usbX/ep_<N>/type
560 		See USB specs for its meaning.
562 What:		/sys/bus/usb/devices/usbX/ep_<N>/direction
570 What:		/sys/bus/usb/devices/usbX/ep_<N>/interval
575 What:		/sys/bus/usb/devices/usbX/ep_<N>/type
585 What:		/sys/bus/usb/devices/usbX/ep_<N>/wMaxPacketSize