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 7title: DisplayPort AUX bus 8 9maintainers: 10 - Douglas Anderson <dianders@chromium.org> 11 12description: 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 27properties: 28 $nodename: 29 const: "aux-bus" 30 31 panel: 32 $ref: panel/panel-common.yaml# 33 34additionalProperties: false 35 36required: 37 - panel 38