[PATCH 1/3] dt-bindings: display: panel: himax,hx83121a: add optional bl supply

[Icenowy Zheng]

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@xxxxxxxxxxx>
---
 .../devicetree/bindings/display/panel/himax,hx83121a.yaml      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml
index e067a2f6d0b22..aeca3c9a599c2 100644
--- 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
 
-- 
2.52.0