diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-usb')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 63 |
1 files changed, 29 insertions, 34 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index cb172db41b34..af9b653422f1 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -28,40 +28,6 @@ Description: drivers, non-authorized one are not. By default, wired USB devices are authorized. - Certified Wireless USB devices are not authorized - initially and should be (by writing 1) after the - device has been authenticated. - -What: /sys/bus/usb/device/.../wusb_cdid -Date: July 2008 -KernelVersion: 2.6.27 -Contact: David Vrabel <david.vrabel@csr.com> -Description: - For Certified Wireless USB devices only. - - A devices's CDID, as 16 space-separated hex octets. - -What: /sys/bus/usb/device/.../wusb_ck -Date: July 2008 -KernelVersion: 2.6.27 -Contact: David Vrabel <david.vrabel@csr.com> -Description: - For Certified Wireless USB devices only. - - Write the device's connection key (CK) to start the - authentication of the device. The CK is 16 - space-separated hex octets. - -What: /sys/bus/usb/device/.../wusb_disconnect -Date: July 2008 -KernelVersion: 2.6.27 -Contact: David Vrabel <david.vrabel@csr.com> -Description: - For Certified Wireless USB devices only. - - Write a 1 to force the device to disconnect - (equivalent to unplugging a wired USB device). - What: /sys/bus/usb/drivers/.../new_id Date: October 2011 Contact: linux-usb@vger.kernel.org @@ -292,6 +258,16 @@ Description: which is marked with early_stop has failed to initialize, it will ignore all future connections until this attribute is clear. +What: /sys/bus/usb/devices/.../<hub_interface>/port<X>/state +Date: June 2023 +Contact: Roy Luo <royluo@google.com> +Description: + Indicates current state of the USB device attached to the port. + Valid states are: 'not-attached', 'attached', 'powered', + 'reconnecting', 'unauthenticated', 'default', 'addressed', + 'configured', and 'suspended'. This file supports poll() to + monitor the state change from user space. + What: /sys/bus/usb/devices/.../power/usb2_lpm_l1_timeout Date: May 2013 Contact: Mathias Nyman <mathias.nyman@linux.intel.com> @@ -337,6 +313,15 @@ Description: Inter-Chip SSIC devices support asymmetric lanes up to 4 lanes per direction. Devices before USB 3.2 are single lane (tx_lanes = 1) +What: /sys/bus/usb/devices/.../typec +Date: November 2023 +Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> +Description: + Symlink to the USB Type-C partner device. USB Type-C partner + represents the component that communicates over the + Configuration Channel (CC signal on USB Type-C connectors and + cables) with the local port. + What: /sys/bus/usb/devices/usbX/bAlternateSetting Description: The current interface alternate setting number, in decimal. @@ -457,6 +442,16 @@ What: /sys/bus/usb/devices/usbX/descriptors Description: Contains the interface descriptors, in binary. +What: /sys/bus/usb/devices/usbX/bos_descriptors +Date: March 2024 +Contact: Elbert Mai <code@elbertmai.com> +Description: + Binary file containing the cached binary device object store (BOS) + of the device. This consists of the BOS descriptor followed by the + set of device capability descriptors. All descriptors read from + this file are in bus-endian format. Note that the kernel will not + request the BOS from a device if its bcdUSB is less than 0x0201. + What: /sys/bus/usb/devices/usbX/idProduct Description: Product ID, in hexadecimal. |