diff --git a/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt b/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt
index 9f365c1a3399..a5bf04dba410 100644
--- a/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/renesas,wdt.txt
@@ -10,6 +10,7 @@ Required properties:
 		 - "renesas,r8a7745-wdt" (RZ/G1E)
 		 - "renesas,r8a77470-wdt" (RZ/G1C)
 		 - "renesas,r8a774a1-wdt" (RZ/G2M)
+		 - "renesas,r8a774b1-wdt" (RZ/G2N)
 		 - "renesas,r8a774c0-wdt" (RZ/G2E)
 	         - "renesas,r8a7790-wdt" (R-Car H2)
 	         - "renesas,r8a7791-wdt" (R-Car M2-W)