dt-bindings: hdmi-connector: add DDC I2C bus phandle documentation

Add an optional ddc-i2c-bus phandle property that points to
an I2C master controller that handles the connector DDC pins.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt b/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt
index acd5668b1ce1d7832de2e52f57644df2d69a9c6d..508aee461e0dd5723e9b11fe8f765ba5ee0d9de3 100644 (file)
--- a/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt
+++ b/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt
@@ -8,6 +8,7 @@ Required properties:
 Optional properties:
 - label: a symbolic name for the connector
 - hpd-gpios: HPD GPIO number
+- ddc-i2c-bus: phandle link to the I2C controller used for DDC EDID probing
 
 Required nodes:
 - Video port for HDMI input