diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml
index b1c6943e7d78..41ad4ed0e74c 100644
--- a/Documentation/devicetree/bindings/arm/cpus.yaml
+++ b/Documentation/devicetree/bindings/arm/cpus.yaml
@@ -350,6 +350,10 @@ properties:
     deprecated: true
     description: Use 'cpu-supply' instead
 
+  pu-supply:
+    deprecated: true
+    description: Only for i.MX6Q/DL/SL SoCs.
+
   soc-supply:
     deprecated: true
     description: Only for i.MX6/7 Soc.