From mboxrd@z Thu Jan 1 00:00:00 1970 From: slongerbeam@gmail.com (Steve Longerbeam) Date: Wed, 7 Jun 2017 11:33:40 -0700 Subject: [PATCH v8 01/34] dt-bindings: Add bindings for video-multiplexer device In-Reply-To: <1496860453-6282-1-git-send-email-steve_longerbeam@mentor.com> References: <1496860453-6282-1-git-send-email-steve_longerbeam@mentor.com> Message-ID: <1496860453-6282-2-git-send-email-steve_longerbeam@mentor.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Philipp Zabel Add bindings documentation for the video multiplexer device. Signed-off-by: Sascha Hauer Signed-off-by: Philipp Zabel Signed-off-by: Steve Longerbeam Acked-by: Sakari Ailus Reviewed-by: Sebastian Reichel Acked-by: Rob Herring Acked-by: Pavel Machek --- .../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