diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx83121a.yaml
index e067a2f6d0b2..aeca3c9a599c 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