dt-binding: usb: add "super-speed-plus"

This commit adds "super-speed-plus" to valid argument list of
"maximum-speed" property.

Signed-off-by: JC Kuo <jckuo@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
index cf5a1ad456e6c740def77a3cf3041ab9f10aea14..e6790d2a4da9bd103d91f2db1dbe3d5331781cc7 100644 (file)
--- a/Documentation/devicetree/bindings/usb/generic.txt
+++ b/Documentation/devicetree/bindings/usb/generic.txt
@@ -2,10 +2,11 @@ Generic USB Properties
 
 Optional properties:
  - maximum-speed: tells USB controllers we want to work up to a certain
-                       speed. Valid arguments are "super-speed", "high-speed",
-                       "full-speed" and "low-speed". In case this isn't passed
-                       via DT, USB controllers should default to their maximum
-                       HW capability.
+                       speed. Valid arguments are "super-speed-plus",
+                       "super-speed", "high-speed", "full-speed" and
+                       "low-speed". In case this isn't passed via DT, USB
+                       controllers should default to their maximum HW
+                       capability.
  - dr_mode: tells Dual-Role USB controllers that we want to work on a
                        particular mode. Valid arguments are "host",
                        "peripheral" and "otg". In case this attribute isn't