dt-bindings: display: panel: himax,hx83121a: add optional bl supply

When the backlight is managed by the panel controller IC, an external
power rail might be powering the backlight.

Add an optional `bl-supply` property to describe such power rail, thus
allow disabling the backlight.

Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260608162622.403713-1-zhengxingda@iscas.ac.cn

diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml
index e067a2f6d0b229da82d6bee03cd2a9c12622c2a7..aeca3c9a599c2bb0f2f3f227fb83ec4b24d9cd3a 100644 (file)
--- a/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml
+++ b/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml
@@ -40,6 +40,9 @@ properties:
   vddi-supply:
     description: power supply for IC
 
+  bl-supply:
+    description: power supply for backlight, in case it's managed via DSC
+
   backlight: true
   ports: true