Documentation/devicetree/bindings/display/bridge/google,cros-ec-anx7688.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/bridge/google,cros-ec-anx7688.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: ChromeOS EC ANX7688 HDMI to DP Converter through Type-C Port
   8
   9 maintainers:
  10   - Nicolas Boichat <drinkcat@chromium.org>
  11   - Enric Balletbo i Serra <enric.balletbo@collabora.com>
  12
  13 description: |
  14   ChromeOS EC ANX7688 is a display bridge that converts HDMI 2.0 to
  15   DisplayPort 1.3 Ultra-HDi (4096x2160p60). It is an Analogix ANX7688 chip
  16   which is connected to and operated by the ChromeOS Embedded Controller
  17   (See google,cros-ec.yaml). It is accessed using I2C tunneling through
  18   the EC and therefore its node should be a child of an EC I2C tunnel node
  19   (See google,cros-ec-i2c-tunnel.yaml).
  20
  21 properties:
  22   compatible:
  23     const: google,cros-ec-anx7688
  24
  25   reg:
  26     maxItems: 1
  27     description: I2C address of the device.
  28
  29   ports:
  30     $ref: /schemas/graph.yaml#/properties/ports
  31
  32     properties:
  33       port@0:
  34         $ref: /schemas/graph.yaml#/properties/port
  35         description: Video port for HDMI input.
  36
  37       port@1:
  38         $ref: /schemas/graph.yaml#/properties/port
  39         description: USB Type-c connector.
  40
  41     required:
  42       - port@0
  43       - port@1
  44
  45 required:
  46   - compatible
  47   - reg
  48   - ports
  49
  50 additionalProperties: false
  51
  52 examples:
  53   - |
  54     i2c_tunnel_b: i2c-tunnel1 {
  55         compatible = "google,cros-ec-i2c-tunnel";
  56         google,remote-bus = <1>;
  57         #address-cells = <1>;
  58         #size-cells = <0>;
  59
  60         anx7688: anx7688@2c {
  61             compatible = "google,cros-ec-anx7688";
  62             reg = <0x2c>;
  63
  64             ports {
  65                 #address-cells = <1>;
  66                 #size-cells = <0>;
  67                 port@0 {
  68                     reg = <0>;
  69                     anx7688_in: endpoint {
  70                         remote-endpoint = <&hdmi0_out>;
  71                     };
  72                 };
  73                 port@1 {
  74                     reg = <1>;
  75                     anx7688_out: endpoint {
  76                         remote-endpoint = <&typec_connector>;
  77                     };
  78                 };
  79             };
  80         };
  81     };
  82