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     "xlnx,v-tpg-7.0" (TPG version 7.0)
  11
  12   TPG versions backward-compatible with previous versions should list all
  13   compatible versions in the newer to older order.
  14
  15 - reg: Physical base address and length of the registers set for the device.
  16
  17 - clocks: Reference to the video core clock.
  18
  19 - xlnx,video-format, xlnx,video-width: Video format and width, as defined in
  20   video.txt.
  21
  22 - port: Video port, using the DT bindings defined in ../video-interfaces.txt.
  23   The TPG has a single output port numbered 0.
  24
  25 Optional properties:
  26
  27 - xlnx,vtc: A phandle referencing the Video Timing Controller that generates
  28   video timings for the TPG test patterns.
  29
  30 - timing-gpios: Specifier for a GPIO that controls the timing mux at the TPG
  31   input. The GPIO active level corresponds to the selection of VTC-generated
  32   video timings.
  33
  34 - reset-gpios: Specifier for a GPIO that assert TPG (AP_RST_N) reset.
  35   This property is mandatory for TPG v7.0.
  36
  37 The xlnx,vtc and timing-gpios properties are mandatory when the TPG is
  38 synthesized with two ports and forbidden when synthesized with one port.
  39
  40 Example:
  41
  42         tpg_0: tpg@40050000 {
  43                 compatible = "xlnx,v-tpg-6.0", "xlnx,v-tpg-5.0";
  44                 reg = <0x40050000 0x10000>;
  45                 clocks = <&clkc 15>;
  46
  47                 xlnx,vtc = <&vtc_3>;
  48                 timing-gpios = <&ps7_gpio_0 55 GPIO_ACTIVE_LOW>;
  49
  50                 ports {
  51                         #address-cells = <1>;
  52                         #size-cells = <0>;
  53
  54                         port@0 {
  55                                 reg = <0>;
  56
  57                                 xlnx,video-format = <XVIP_VF_YUV_422>;
  58                                 xlnx,video-width = <8>;
  59
  60                                 tpg_in: endpoint {
  61                                         remote-endpoint = <&adv7611_out>;
  62                                 };
  63                         };
  64                         port@1 {
  65                                 reg = <1>;
  66
  67                                 xlnx,video-format = <XVIP_VF_YUV_422>;
  68                                 xlnx,video-width = <8>;
  69
  70                                 tpg1_out: endpoint {
  71                                         remote-endpoint = <&switch_in0>;
  72                                 };
  73                         }:
  74                 };
  75         };