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diff --git a/Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml b/Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml
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+++ b/Documentation/devicetree/bindings/watchdog/renesas,rzn1-wdt.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/renesas,rzn1-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RZ/N1 Watchdog Timer (WDT) Controller
+
+maintainers:
+  - Wolfram Sang <wsa+renesas@sang-engineering.com>
+
+properties:
+  compatible:
+    items:
+      - const: renesas,r9a06g032-wdt # RZ/N1D
+      - const: renesas,rzn1-wdt      # RZ/N1
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  timeout-sec: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+allOf:
+  - $ref: watchdog.yaml#
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/r9a06g032-sysctrl.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    watchdog@40008000 {
+            compatible = "renesas,r9a06g032-wdt", "renesas,rzn1-wdt";
+            reg = <0x40008000 0x1000>;
+            interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
+            clocks = <&sysctrl R9A06G032_CLK_WATCHDOG>;
+    };