phy: exynos-usb2: add vbus regulator support
Exynos USB2 PHY has separate power supply, which is usually provided by
VBUS regulator. This patch adds support for it. VBUS regulator is
optional, to keep compatibility with boards, which have VBUS provided
from some always-on power source.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
diff --git a/Documentation/devicetree/bindings/phy/samsung-phy.txt b/Documentation/devicetree/bindings/phy/samsung-phy.txt
index 60c6f2a..0289d3b 100644
--- a/Documentation/devicetree/bindings/phy/samsung-phy.txt
+++ b/Documentation/devicetree/bindings/phy/samsung-phy.txt
@@ -44,6 +44,9 @@
- the "ref" clock is used to get the rate of the clock provided to the
PHY module
+Optional properties:
+- vbus-supply: power-supply phandle for vbus power source
+
The first phandle argument in the PHY specifier identifies the PHY, its
meaning is compatible dependent. For the currently supported SoCs (Exynos 4210
and Exynos 4212) it is as follows: