[PATCH v7 01/34] dt-bindings: Add bindings for video-multiplexer device
Steve Longerbeam
slongerbeam at gmail.com
Wed May 24 17:29:16 PDT 2017
From: Philipp Zabel <p.zabel at pengutronix.de>
Add bindings documentation for the video multiplexer device.
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel at pengutronix.de>
Signed-off-by: Steve Longerbeam <steve_longerbeam at mentor.com>
Acked-by: Sakari Ailus <sakari.ailus at linux.intel.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel at collabora.co.uk>
Acked-by: Rob Herring <robh at kernel.org>
---
.../devicetree/bindings/media/video-mux.txt | 60 ++++++++++++++++++++++
1 file changed, 60 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/video-mux.txt
diff --git a/Documentation/devicetree/bindings/media/video-mux.txt b/Documentation/devicetree/bindings/media/video-mux.txt
new file mode 100644
index 0000000..63b9dc9
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/video-mux.txt
@@ -0,0 +1,60 @@
+Video Multiplexer
+=================
+
+Video multiplexers allow to select between multiple input ports. Video received
+on the active input port is passed through to the output port. Muxes described
+by this binding are controlled by a multiplexer controller that is described by
+the bindings in Documentation/devicetree/bindings/mux/mux-controller.txt
+
+Required properties:
+- compatible : should be "video-mux"
+- mux-controls : mux controller node to use for operating the mux
+- #address-cells: should be <1>
+- #size-cells: should be <0>
+- port@*: at least three port nodes containing endpoints connecting to the
+ source and sink devices according to of_graph bindings. The last port is
+ the output port, all others are inputs.
+
+Optionally, #address-cells, #size-cells, and port nodes can be grouped under a
+ports node as described in Documentation/devicetree/bindings/graph.txt.
+
+Example:
+
+ mux: mux-controller {
+ compatible = "gpio-mux";
+ #mux-control-cells = <0>;
+
+ mux-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
+ };
+
+ video-mux {
+ compatible = "video-mux";
+ mux-controls = <&mux>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port at 0 {
+ reg = <0>;
+
+ mux_in0: endpoint {
+ remote-endpoint = <&video_source0_out>;
+ };
+ };
+
+ port at 1 {
+ reg = <1>;
+
+ mux_in1: endpoint {
+ remote-endpoint = <&video_source1_out>;
+ };
+ };
+
+ port at 2 {
+ reg = <2>;
+
+ mux_out: endpoint {
+ remote-endpoint = <&capture_interface_in>;
+ };
+ };
+ };
+};
--
2.7.4
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