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[v8,2/4] dt-bindings: display: hdmi-connector: Support DDC bus enable

Message ID 20190806155744.10263-3-megous@megous.com
State Not Applicable, archived
Headers show
Series Add support for Orange Pi 3 | expand

Commit Message

Ondřej Jirman Aug. 6, 2019, 3:57 p.m. UTC
From: Ondrej Jirman <megous@megous.com>

Some Allwinner SoC using boards (Orange Pi 3 for example) need to enable
on-board voltage shifting logic for the DDC bus using a gpio to be able
to access DDC bus. Use ddc-en-gpios property on the hdmi-connector to
model this.

Add binding documentation for optional ddc-en-gpios property.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: Rob Herring <robh@kernel.org>
 .../devicetree/bindings/display/connector/hdmi-connector.txt     | 1 +
 1 file changed, 1 insertion(+)
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diff --git a/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt b/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt
index 508aee461e0d..aeb07c4bd703 100644
--- a/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt
+++ b/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt
@@ -9,6 +9,7 @@  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
+- ddc-en-gpios: signal to enable DDC bus
 Required nodes:
 - Video port for HDMI input