[PATCH/RFC 02/10] phy: rcar-gen3-usb2: Add phy-supply description in device tree doc

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To handle the VBUS on/off by a regulator driver, this patch adds
description about phy-supply in the rcar-gen3-phy-usb2.txt.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
---
 Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt
index eaf7e9b..48b33a9 100644
--- a/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt
+++ b/Documentation/devicetree/bindings/phy/rcar-gen3-phy-usb2.txt
@@ -15,6 +15,8 @@ To use a USB channel where USB 2.0 Host and HSUSB (USB 2.0 Peripheral) are
 combined, the device tree node should set interrupt properties to use the
 channel as USB OTG:
 - interrupts: interrupt specifier for the PHY.
+- phy-supply: Phandle to a regulator that provides power to the VBUS. This
+	      regulator will be managed during the PHY power on/off sequence.
 
 Example (R-Car H3):
 
-- 
1.9.1

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