diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
index ef68dabcf4dc..3a66fd214c17 100644
--- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
@@ -73,6 +73,8 @@ additionalProperties:
         pins: true
         drive-strength:
           enum: [ 2, 4, 8, 12 ]
+        output-impedance-ohms:
+          enum: [ 33, 50, 66, 100 ]
         power-source:
           enum: [ 1800, 2500, 3300 ]
         slew-rate: true