[PATCH 1/2] dt: bindings: add allwinner, otg-routed property for phy-sun4i-usb

[Icenowy Zheng]

On some newer Allwinner SoCs (H3 or A64), the PHY0 can be either routed to
the MUSB controller (which is an OTG controller) or the OHCI/EHCI pair
(which is a Host-only controller, but more stable and easy to implement).

This property marks whether on a certain board which controller should be
attached to the PHY.

Signed-off-by: Icenowy Zheng <icenowy at aosc.xyz>
---
 Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
index 287150d..5c11d57 100644
--- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
+++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
@@ -36,6 +36,13 @@ Optional properties:
 - usb1_vbus-supply : regulator phandle for controller usb1 vbus
 - usb2_vbus-supply : regulator phandle for controller usb2 vbus
 
+Optional properties for H3 or A64 SoCs:
+- allwinner,otg-routed : USB0 (OTG) PHY is routed to OHCI/EHCI pair rather than
+			 MUSB. (boolean, if this property is set, the OHCI/EHCI
+			 controllers at PHY0 should be enabled and the MUSB
+			 controller must *NOT* be enabled, and thus the PHY can
+			 only work in host mode)
+
 Example:
 	usbphy: phy at 0x01c13400 {
 		#phy-cells = <1>;
-- 
2.10.0