[PATCH 2/4] dt-bindings: phy-rockchip-inno-usb2: add documentation for extcon and utmi-avalid properties.

[Enric Balletbo i Serra]

Commit 98898f3bc83c8 ("phy: rockchip-inno-usb2: support otg-port for
rk3399") introduces two new properties. The extcon property is used to
detect the cable-state, and the rockchip,utmi-avalid is used to indicate
which register should be used to detect the vbus state.

Document these properties in the documentation binding.

Fixes: 98898f3bc83c8 ("phy: rockchip-inno-usb2: support otg-port for rk3399")
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
---

 .../devicetree/bindings/phy/phy-rockchip-inno-usb2.txt         | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
index 074a7b3b0425..2d4808d3920b 100644
--- a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
+++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt
@@ -23,6 +23,7 @@ Optional properties:
 		 register files". When set driver will request its
 		 phandle as one companion-grf for some special SoCs
 		 (e.g RV1108).
+ - extcon : phandle to the extcon device for the otg phy.
 
 Required nodes : a sub-node is required for each port the phy provides.
 		 The sub-node name is used to identify host or otg port,
@@ -45,6 +46,8 @@ Required properties (port (child) node):
 Optional properties:
  - phy-supply : phandle to a regulator that provides power to VBUS.
 		See ./phy-bindings.txt for details.
+ - rockchip,utmi-avalid : boolean, use the avalid register to get vbus status.
+			  Otherwise, use the bvalid register.
 
 Example:
 
-- 
2.18.0