diff options
| author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2023-10-11 13:58:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-16 20:02:36 +0200 |
| commit | 59de2a56d127890cc610f3896d5fc31887c54ac2 (patch) | |
| tree | 216eee1c028a15c89d89fc610f48ce1fc03a9da2 /Documentation/ABI | |
| parent | 17d6b82d2d6d467149874b883cdba844844b996d (diff) | |
| download | linux-59de2a56d127890cc610f3896d5fc31887c54ac2.tar.gz | |
usb: typec: Link enumerated USB devices with Type-C partner
Adding functions that USB hub code can use to inform the
Type-C class about connected USB devices.
Once taken into use, it will allow the Type-C port drivers
to power off components that are not needed, for example if
USB2 device is enumerated, everything that is only relevant
for USB3 (retimers, etc.), can be powered off.
This will also create a symlink "typec" for the USB devices
pointing to the USB Type-C partner device.
Suggested-by: Benson Leung <bleung@chromium.org>
Tested-by: Benson Leung <bleung@chromium.org>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20231011105825.320062-2-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index a44bfe0200616c..2b7108e2197756 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -313,6 +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. |