[PATCH 3/4] dt: add bindings for ZTE VGA device

[Shawn Guo]

From: Shawn Guo <shawn.guo at linaro.org>

It adds bindings doc for ZTE VOU VGA output device.

Signed-off-by: Shawn Guo <shawn.guo at linaro.org>
---
 .../devicetree/bindings/display/zte,vou.txt         | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/zte,vou.txt b/Documentation/devicetree/bindings/display/zte,vou.txt
index 9c356284232b..38476475fd60 100644
--- a/Documentation/devicetree/bindings/display/zte,vou.txt
+++ b/Documentation/devicetree/bindings/display/zte,vou.txt
@@ -58,6 +58,18 @@ Required properties:
    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.
 
+* VGA output device
+
+Required properties:
+ - compatible: should be "zte,zx296718-vga"
+ - reg: Physical base address and length of the VGA device IO region
+ - interrupts : VGA interrupt number to CPU
+ - clocks: Phandle with clock-specifier pointing to VGA I2C clock.
+ - clock-names: Must be "i2c_wclk".
+ - zte,vga-power-control: the phandle to SYSCTRL block followed by two
+   integer cells.  The first cell is the offset of SYSCTRL register used
+   to control VGA DAC power, and the second cell is the bit mask.
+
 Example:
 
 vou: vou at 1440000 {
@@ -81,6 +93,15 @@ vou: vou at 1440000 {
 			      "main_wclk", "aux_wclk";
 	};
 
+	vga: vga at 8000 {
+		compatible = "zte,zx296718-vga";
+		reg = <0x8000 0x1000>;
+		interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&topcrm VGA_I2C_WCLK>;
+		clock-names = "i2c_wclk";
+		zte,vga-power-control = <&sysctrl 0x170 0xe0>;
+	};
+
 	hdmi: hdmi at c000 {
 		compatible = "zte,zx296718-hdmi";
 		reg = <0xc000 0x4000>;
-- 
1.9.1