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[RESEND PATCH 1/4] dt-bindings: display: amlogic,meson-vpu: Add optional power domain property

The Video Processing Unit power domain was setup by the Vendor U-Boot,
add support for an optional Power Domain phandle to setup it from the kernel.

Acked-by: Rob Herring <robh@xxxxxxxxxx> 
Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
 Documentation/devicetree/bindings/display/amlogic,meson-vpu.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/amlogic,meson-vpu.txt b/Documentation/devicetree/bindings/display/amlogic,meson-vpu.txt
index 00f74ba..057b813 100644
--- a/Documentation/devicetree/bindings/display/amlogic,meson-vpu.txt
+++ b/Documentation/devicetree/bindings/display/amlogic,meson-vpu.txt
@@ -64,6 +64,10 @@ Required properties:
 - reg-names: should contain the names of the previous memory regions
 - interrupts: should contain the VENC Vsync interrupt number
+Optional properties:
+- power-domains: Optional phandle to associated power domain as described in
+	the file ../power/power_domain.txt
 Required nodes:
 The connections to the VPU output video ports are modeled using the OF graph