Documentation/devicetree/bindings/media/video-mux.txt

   1 Video Multiplexer
   2 =================
   3
   4 Video multiplexers allow to select between multiple input ports. Video received
   5 on the active input port is passed through to the output port. Muxes described
   6 by this binding are controlled by a multiplexer controller that is described by
   7 the bindings in Documentation/devicetree/bindings/mux/mux-controller.txt
   8
   9 Required properties:
  10 - compatible : should be "video-mux"
  11 - mux-controls : mux controller node to use for operating the mux
  12 - #address-cells: should be <1>
  13 - #size-cells: should be <0>
  14 - port@*: at least three port nodes containing endpoints connecting to the
  15   source and sink devices according to of_graph bindings. The last port is
  16   the output port, all others are inputs.
  17
  18 Optionally, #address-cells, #size-cells, and port nodes can be grouped under a
  19 ports node as described in Documentation/devicetree/bindings/graph.txt.
  20
  21 Example:
  22
  23         mux: mux-controller {
  24                 compatible = "gpio-mux";
  25                 #mux-control-cells = <0>;
  26
  27                 mux-gpios = <&gpio1 15 GPIO_ACTIVE_HIGH>;
  28         };
  29
  30         video-mux {
  31                 compatible = "video-mux";
  32                 mux-controls = <&mux>;
  33                 #address-cells = <1>;
  34                 #size-cells = <0>;
  35
  36                 port@0 {
  37                         reg = <0>;
  38
  39                         mux_in0: endpoint {
  40                                 remote-endpoint = <&video_source0_out>;
  41                         };
  42                 };
  43
  44                 port@1 {
  45                         reg = <1>;
  46
  47                         mux_in1: endpoint {
  48                                 remote-endpoint = <&video_source1_out>;
  49                         };
  50                 };
  51
  52                 port@2 {
  53                         reg = <2>;
  54
  55                         mux_out: endpoint {
  56                                 remote-endpoint = <&capture_interface_in>;
  57                         };
  58                 };
  59         };
  60 };