Bindings/display/dp-aux-bus.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/dp-aux-bus.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: DisplayPort AUX bus

maintainers:
  - Douglas Anderson <dianders@chromium.org>

description:
  DisplayPort controllers provide a control channel to the sinks that
  are hooked up to them. This is the DP AUX bus. Over the DP AUX bus
  we can query properties about a sink and also configure it. In
  particular, DP sinks support DDC over DP AUX which allows tunneling
  a standard I2C DDC connection over the AUX channel.

  To model this relationship, DP sinks should be placed as children
  of the DP controller under the "aux-bus" node.

  At the moment, this binding only handles the eDP case. It is
  possible it will be extended in the future to handle the DP case.
  For DP, presumably a connector would be listed under the DP AUX
  bus instead of a panel.

properties:
  $nodename:
    const: "aux-bus"

  panel:
    $ref: panel/panel-common.yaml#

additionalProperties: false

required:
  - panel