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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/samsung-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung SoC Watchdog Timer Controller
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+description: |+
+  The Samsung's Watchdog controller is used for resuming system operation
+  after a preset amount of time during which the WDT reset event has not
+  occurred.
+
+properties:
+  compatible:
+    enum:
+      - samsung,s3c2410-wdt                   # for S3C2410
+      - samsung,s3c6410-wdt                   # for S3C6410, S5PV210 and Exynos4
+      - samsung,exynos5250-wdt                # for Exynos5250
+      - samsung,exynos5420-wdt                # for Exynos5420
+      - samsung,exynos7-wdt                   # for Exynos7
+      - samsung,exynos850-wdt                 # for Exynos850
+      - samsung,exynosautov9-wdt              # for Exynosautov9
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    minItems: 1
+    maxItems: 2
+
+  interrupts:
+    maxItems: 1
+
+  samsung,cluster-index:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Index of CPU cluster on which watchdog is running (in case of Exynos850)
+
+  samsung,syscon-phandle:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the PMU system controller node (in case of Exynos5250,
+      Exynos5420, Exynos7 and Exynos850).
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - interrupts
+  - reg
+
+allOf:
+  - $ref: watchdog.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - samsung,exynos5250-wdt
+              - samsung,exynos5420-wdt
+              - samsung,exynos7-wdt
+              - samsung,exynos850-wdt
+              - samsung,exynosautov9-wdt
+    then:
+      required:
+        - samsung,syscon-phandle
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - samsung,exynos850-wdt
+              - samsung,exynosautov9-wdt
+    then:
+      properties:
+        clocks:
+          items:
+            - description: Bus clock, used for register interface
+            - description: Source clock (driving watchdog counter)
+        clock-names:
+          items:
+            - const: watchdog
+            - const: watchdog_src
+        samsung,cluster-index:
+          enum: [0, 1]
+      required:
+        - samsung,cluster-index
+    else:
+      properties:
+        clocks:
+          items:
+            - description: Bus clock, which is also a source clock
+        clock-names:
+          items:
+            - const: watchdog
+        samsung,cluster-index: false
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    watchdog@101d0000 {
+        compatible = "samsung,exynos5250-wdt";
+        reg = <0x101D0000 0x100>;
+        interrupts = <0 42 0>;
+        clocks = <&clock 336>;
+        clock-names = "watchdog";
+        samsung,syscon-phandle = <&pmu_syscon>;
+    };