1 files changed, 13 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/configfs-usb-gadget b/Documentation/ABI/testing/configfs-usb-gadget
index 0e7b786f24ac..5c0b3e6eb981 100644
--- a/Documentation/ABI/testing/configfs-usb-gadget
+++ b/Documentation/ABI/testing/configfs-usb-gadget
@@ -62,6 +62,19 @@ KernelVersion:	3.11
 Description:
                 This group contains functions available to this USB gadget.
 
+What:           /config/usb-gadget/gadget/functions/<func>.<inst>/interface.<n>
+Date:           May 2014
+KernelVersion:  3.16
+Description:
+                This group contains "Feature Descriptors" specific for one
+                gadget's USB interface or one interface group described
+                by an IAD.
+
+                The attributes:
+
+                compatible_id           - 8-byte string for "Compatible ID"
+                sub_compatible_id       - 8-byte string for "Sub Compatible ID"
+
 What:           /config/usb-gadget/gadget/strings
 Date:           Jun 2013
 KernelVersion:  3.11