video: Add ADV7123 DT bindings documentation

The ADV7123 is a video DAC described by an input port, an output port,
and an optional power save GPIO.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

1 files changed, 50 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/video/adi,adv7123.txt b/Documentation/devicetree/bindings/video/adi,adv7123.txt
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+++ b/Documentation/devicetree/bindings/video/adi,adv7123.txt
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+Analog Device ADV7123 Video DAC
+-------------------------------
+
+The ADV7123 is a digital-to-analog converter that outputs VGA signals from a
+parallel video input.
+
+Required properties:
+
+- compatible: Should be "adi,adv7123"
+
+Optional properties:
+
+- psave-gpios: Power save control GPIO
+
+Required nodes:
+
+The ADV7123 has two video ports. Their connections are modeled using the OF
+graph bindings specified in Documentation/devicetree/bindings/graph.txt.
+
+- Video port 0 for DPI input
+- Video port 1 for VGA output
+
+
+Example
+-------
+
+        adv7123: encoder@0 {
+                compatible = "adi,adv7123";
+
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@0 {
+                                reg = <0>;
+
+                                adv7123_in: endpoint@0 {
+                                        remote-endpoint = <&dpi_out>;
+                                };
+                        };
+
+                        port@1 {
+                                reg = <1>;
+
+                                adv7123_out: endpoint@0 {
+                                        remote-endpoint = <&vga_connector_in>;
+                                };
+                        };
+                };
+        };