Bindings/display/dp-aux-bus.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/dp-aux-bus.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: DisplayPort AUX bus
   8
   9 maintainers:
  10   - Douglas Anderson <dianders@chromium.org>
  11
  12 description:
  13   DisplayPort controllers provide a control channel to the sinks that
  14   are hooked up to them. This is the DP AUX bus. Over the DP AUX bus
  15   we can query properties about a sink and also configure it. In
  16   particular, DP sinks support DDC over DP AUX which allows tunneling
  17   a standard I2C DDC connection over the AUX channel.
  18
  19   To model this relationship, DP sinks should be placed as children
  20   of the DP controller under the "aux-bus" node.
  21
  22   At the moment, this binding only handles the eDP case. It is
  23   possible it will be extended in the future to handle the DP case.
  24   For DP, presumably a connector would be listed under the DP AUX
  25   bus instead of a panel.
  26
  27 properties:
  28   $nodename:
  29     const: aux-bus
  30
  31   panel:
  32     $ref: panel/panel-common.yaml#
  33
  34 additionalProperties: false
  35
  36 required:
  37   - panel