Documentation/devicetree/bindings/media/xilinx/xlnx,v-tpg.txt

   1 Xilinx Video Test Pattern Generator (TPG)
   2 -----------------------------------------
   3
   4 Required properties:
   5
   6 - compatible: Must contain at least one of
   7
   8     "xlnx,v-tpg-5.0" (TPG version 5.0)
   9     "xlnx,v-tpg-6.0" (TPG version 6.0)
  10
  11   TPG versions backward-compatible with previous versions should list all
  12   compatible versions in the newer to older order.
  13
  14 - reg: Physical base address and length of the registers set for the device.
  15
  16 - clocks: Reference to the video core clock.
  17
  18 - xlnx,video-format, xlnx,video-width: Video format and width, as defined in
  19   video.txt.
  20
  21 - port: Video port, using the DT bindings defined in ../video-interfaces.txt.
  22   The TPG has a single output port numbered 0.
  23
  24 Optional properties:
  25
  26 - xlnx,vtc: A phandle referencing the Video Timing Controller that generates
  27   video timings for the TPG test patterns.
  28
  29 - timing-gpios: Specifier for a GPIO that controls the timing mux at the TPG
  30   input. The GPIO active level corresponds to the selection of VTC-generated
  31   video timings.
  32
  33 The xlnx,vtc and timing-gpios properties are mandatory when the TPG is
  34 synthesized with two ports and forbidden when synthesized with one port.
  35
  36 Example:
  37
  38         tpg_0: tpg@40050000 {
  39                 compatible = "xlnx,v-tpg-6.0", "xlnx,v-tpg-5.0";
  40                 reg = <0x40050000 0x10000>;
  41                 clocks = <&clkc 15>;
  42
  43                 xlnx,vtc = <&vtc_3>;
  44                 timing-gpios = <&ps7_gpio_0 55 GPIO_ACTIVE_LOW>;
  45
  46                 ports {
  47                         #address-cells = <1>;
  48                         #size-cells = <0>;
  49
  50                         port@0 {
  51                                 reg = <0>;
  52
  53                                 xlnx,video-format = <XVIP_VF_YUV_422>;
  54                                 xlnx,video-width = <8>;
  55
  56                                 tpg_in: endpoint {
  57                                         remote-endpoint = <&adv7611_out>;
  58                                 };
  59                         };
  60                         port@1 {
  61                                 reg = <1>;
  62
  63                                 xlnx,video-format = <XVIP_VF_YUV_422>;
  64                                 xlnx,video-width = <8>;
  65
  66                                 tpg1_out: endpoint {
  67                                         remote-endpoint = <&switch_in0>;
  68                                 };
  69                         };
  70                 };
  71         };