On Sat, Apr 13, 2019 at 06:54:15PM +0200, megous@megous.com wrote:
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 to be usable. Use ddc-supply on the hdmi-connector to model this.
Add binding documentation for optional ddc-supply property.
Signed-off-by: Ondrej Jirman megous@megous.com
.../devicetree/bindings/display/connector/hdmi-connector.txt | 1 + 1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt b/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt index 508aee461e0d..33085aeb0bb9 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-supply: the power supply for the DDC bus
It's not just for DDC. It powers the chips in bridge dongles for example. Pretty much every diagram I find just calls it 5V or +5V.
So how about '5V-supply' or 'v5V-supply'?
Rob