diff --git a/Documentation/devicetree/bindings/gpio/x-powers,axp209-gpio.yaml b/Documentation/devicetree/bindings/gpio/x-powers,axp209-gpio.yaml
index 31906c253940..1638cfe90f1c 100644
--- a/Documentation/devicetree/bindings/gpio/x-powers,axp209-gpio.yaml
+++ b/Documentation/devicetree/bindings/gpio/x-powers,axp209-gpio.yaml
@@ -44,6 +44,7 @@ patternProperties:
             - GPIO0
             - GPIO1
             - GPIO2
+            - GPIO3
 
       function:
         enum: