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diff --git a/Documentation/devicetree/bindings/power/reset/atmel,at91sam9260-shdwc.yaml b/Documentation/devicetree/bindings/power/reset/atmel,at91sam9260-shdwc.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/reset/atmel,at91sam9260-shdwc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip AT91 SHDWC Shutdown Controller
+
+maintainers:
+  - Claudiu Beznea <claudiu.beznea@microchip.com>
+
+description: |
+  Microchip AT91 SHDWC shutdown controller controls the power supplies VDDIO
+  and VDDCORE and the wake-up detection on debounced input lines.
+
+properties:
+  compatible:
+    enum:
+      - atmel,at91sam9260-shdwc
+      - atmel,at91sam9rl-shdwc
+      - atmel,at91sam9x5-shdwc
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  atmel,wakeup-mode:
+    description: operation mode of the wakeup mode
+    $ref: /schemas/types.yaml#/definitions/string
+    enum: [ none, high, low, any ]
+
+  atmel,wakeup-counter:
+    description: counter on wake-up 0
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 15
+
+  atmel,wakeup-rtt-timer:
+    description: enable real-time timer wake-up
+    type: boolean
+
+  atmel,wakeup-rtc-timer:
+    description: enable real-time clock wake-up
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: atmel,at91sam9x5-shdwc
+    then:
+      properties:
+        atmel,wakeup-rtt-timer: false
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: atmel,at91sam9260-shdwc
+    then:
+      properties:
+        atmel,wakeup-rtc-timer: false
+
+additionalProperties: false
+
+examples:
+  - |
+    shdwc: poweroff@fffffd10 {
+        compatible = "atmel,at91sam9260-shdwc";
+        reg = <0xfffffd10 0x10>;
+        clocks = <&clk32k>;
+    };
+
+...