diff --git a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
index 53c952d93ea28..06229d93c24cf 100644
--- a/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
@@ -71,6 +71,7 @@ patternProperties:
         maxItems: 1
       resets:
         maxItems: 1
+      gpio-line-names: true
       gpio-ranges:
         minItems: 1
         maxItems: 16