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Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-udc')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-udc | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-udc b/Documentation/ABI/testing/sysfs-class-udc new file mode 100644 index 000000000000..1b9c566d0552 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-udc @@ -0,0 +1,16 @@ +What: /sys/class/udc/<udc name>/device/usb_data_enabled +Date: December 2020 +Contact: "Ray Chi" <raychi@google.com> +Description: + The attribute can allow user space can check and modify + the value to enable or disable usb functionality. Therefore, + if the attritube is set to 0, USB host and USB peripheral + modes wouldn't be working. + + Example: + Enable USB data functionality + # echo 1 > /sys/class/udc/.../device/usb_data_enabled + + Disable USB data functionality + # echo 0 > /sys/class/udc/.../device/usb_data_enabled + |