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diff --git a/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml b/Documentation/devicetree/bindings/watchdog/st,stm32-iwdg.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/st,stm32-iwdg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics STM32 Independent WatchDoG (IWDG) bindings
+
+maintainers:
+  - Yannick Fertre <yannick.fertre@st.com>
+  - Christophe Roullier <christophe.roullier@st.com>
+
+allOf:
+  - $ref: "watchdog.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - st,stm32-iwdg
+      - st,stm32mp1-iwdg
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Low speed clock
+      - description: Optional peripheral clock
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    items:
+      enum:
+        - lsi
+        - pclk
+    minItems: 1
+    maxItems: 2
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/stm32mp1-clks.h>
+    watchdog@5a002000 {
+      compatible = "st,stm32mp1-iwdg";
+      reg = <0x5a002000 0x400>;
+      clocks = <&rcc IWDG2>, <&rcc CK_LSI>;
+      clock-names = "pclk", "lsi";
+      timeout-sec = <32>;
+    };
+
+...