diff --git a/Documentation/devicetree/bindings/sound/realtek,rt5645.yaml b/Documentation/devicetree/bindings/sound/realtek,rt5645.yaml
index 13f09f1bc800..0a698798c22b 100644
--- a/Documentation/devicetree/bindings/sound/realtek,rt5645.yaml
+++ b/Documentation/devicetree/bindings/sound/realtek,rt5645.yaml
@@ -51,7 +51,7 @@ properties:
     description: Power supply for AVDD, providing 1.8V.
 
   cpvdd-supply:
-    description: Power supply for CPVDD, providing 3.5V.
+    description: Power supply for CPVDD, providing 1.8V.
 
   hp-detect-gpios:
     description: