dt: add bindings for ZTE tvenc device

It adds bindings doc for ZTE VOU TV Encoder device.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/display/zte,vou.txt b/Documentation/devicetree/bindings/display/zte,vou.txt
index 740e5bd..9c35628 100644 (file)
--- a/Documentation/devicetree/bindings/display/zte,vou.txt
+++ b/Documentation/devicetree/bindings/display/zte,vou.txt
@@ -49,6 +49,15 @@ Required properties:
        "osc_clk"
        "xclk"
 
+* TV Encoder output device
+
+Required properties:
+ - compatible: should be "zte,zx296718-tvenc"
+ - reg: Physical base address and length of the TVENC device IO region
+ - zte,tvenc-power-control: the phandle to SYSCTRL block followed by two
+   integer cells.  The first cell is the offset of SYSCTRL register used
+   to control TV Encoder DAC power, and the second cell is the bit mask.
+
 Example:
 
 vou: vou@1440000 {
@@ -81,4 +90,10 @@ vou: vou@1440000 {
                         <&topcrm HDMI_XCLK>;
                clock-names = "osc_cec", "osc_clk", "xclk";
        };
+
+       tvenc: tvenc@2000 {
+               compatible = "zte,zx296718-tvenc";
+               reg = <0x2000 0x1000>;
+               zte,tvenc-power-control = <&sysctrl 0x170 0x10>;
+       };
 };