summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/display/dp-aux-bus.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/display/dp-aux-bus.yaml')
-rw-r--r--Documentation/devicetree/bindings/display/dp-aux-bus.yaml37
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/dp-aux-bus.yaml b/Documentation/devicetree/bindings/display/dp-aux-bus.yaml
new file mode 100644
index 000000000..5e4afe9f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/dp-aux-bus.yaml
@@ -0,0 +1,37 @@
+# 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