Bindings/display/arm,hdlcd.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/display/arm,hdlcd.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Arm HDLCD display controller
   8
   9 maintainers:
  10   - Liviu Dudau <Liviu.Dudau@arm.com>
  11   - Andre Przywara <andre.przywara@arm.com>
  12
  13 description:
  14   The Arm HDLCD is a display controller found on several development platforms
  15   produced by ARM Ltd and in more modern of its Fast Models. The HDLCD is an
  16   RGB streamer that reads the data from a framebuffer and sends it to a single
  17   digital encoder (DVI or HDMI).
  18
  19 properties:
  20   compatible:
  21     const: arm,hdlcd
  22
  23   reg:
  24     maxItems: 1
  25
  26   interrupts:
  27     maxItems: 1
  28
  29   clock-names:
  30     const: pxlclk
  31
  32   clocks:
  33     maxItems: 1
  34     description: The input reference for the pixel clock.
  35
  36   memory-region:
  37     maxItems: 1
  38     description:
  39       Phandle to a node describing memory to be used for the framebuffer.
  40       If not present, the framebuffer may be located anywhere in memory.
  41
  42   iommus:
  43     maxItems: 1
  44
  45   port:
  46     $ref: /schemas/graph.yaml#/properties/port
  47     unevaluatedProperties: false
  48     description:
  49       Output endpoint of the controller, connecting the LCD panel signals.
  50
  51 additionalProperties: false
  52
  53 required:
  54   - compatible
  55   - reg
  56   - interrupts
  57   - clocks
  58   - port
  59
  60 examples:
  61   - |
  62     hdlcd@2b000000 {
  63         compatible = "arm,hdlcd";
  64         reg = <0x2b000000 0x1000>;
  65         interrupts = <0 85 4>;
  66         clocks = <&oscclk5>;
  67         clock-names = "pxlclk";
  68         port {
  69             hdlcd_output: endpoint {
  70                 remote-endpoint = <&hdmi_enc_input>;
  71             };
  72         };
  73     };
  74
  75     /* HDMI encoder on I2C bus */
  76     i2c {
  77         #address-cells = <1>;
  78         #size-cells = <0>;
  79         hdmi-transmitter@70 {
  80             compatible = "nxp,tda998x";
  81             reg = <0x70>;
  82             port {
  83                 hdmi_enc_input: endpoint {
  84                     remote-endpoint = <&hdlcd_output>;
  85                 };
  86             };
  87         };
  88     };
  89 ...