dt-bindings: usb: mtk-xhci: add optional properies to disable ports

Add optional properies to disable usb2 or usb3 ports, they are used
when provided ports are not used on some special platforms.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>

diff --git a/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt b/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt
index 0447468a2d186815fffab1361cfc4cfa6484929b..2a298f7b1684b9ba1bb982204fd61fbd20120e2d 100644 (file)
--- a/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt
+++ b/doc/device-tree-bindings/usb/mediatek,mtk-xhci.txt
@@ -25,6 +25,10 @@ Required properties:
 
 Optional properties:
  - vbus-supply : reference to the VBUS regulator;
+ - mediatek,u3p-dis-msk : mask to disable u3ports, bit0 for u3port0,
+       bit1 for u3port1, ... etc;
+ - mediatek,u2p-dis-msk : mask to disable u2ports, bit0 for u2port0,
+       bit1 for u2port1, ... etc;
 
 Example:
 xhci: usb@1a0c0000 {