dt-bindings: power: reset: atmel,at91sam9260-shdwc: convert to yaml

Convert Microchip AT91 shutdown controller to YAML.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

Author: claudiubeznea

Documentation/devicetree/bindings/arm/atmel-sysregs.txt

@@ -52,37 +52,6 @@ Example:
 		reg = <0xe3804000 0x1000>;
 };
 
-SHDWC Shutdown Controller
-
-required properties:
-- compatible: Should be "atmel,<chip>-shdwc".
-  <chip> can be "at91sam9260", "at91sam9rl" or "at91sam9x5".
-- reg: Should contain registers location and length
-- clocks: phandle to input clock.
-
-optional properties:
-- atmel,wakeup-mode: String, operation mode of the wakeup mode.
-  Supported values are: "none", "high", "low", "any".
-- atmel,wakeup-counter: Counter on Wake-up 0 (between 0x0 and 0xf).
-
-optional at91sam9260 properties:
-- atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.
-
-optional at91sam9rl properties:
-- atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.
-- atmel,wakeup-rtt-timer: boolean to enable Real-time Timer Wake-up.
-
-optional at91sam9x5 properties:
-- atmel,wakeup-rtc-timer: boolean to enable Real-time Clock Wake-up.
-
-Example:
-
-	shdwc@fffffd10 {
-		compatible = "atmel,at91sam9260-shdwc";
-		reg = <0xfffffd10 0x10>;
-		clocks = <&clk32k>;
-	};
-
 SHDWC SAMA5D2-Compatible Shutdown Controller
 
 1) shdwc node

Documentation/devicetree/bindings/power/reset/atmel,at91sam9260-shdwc.yaml

@@ -0,0 +1,82 @@
+# 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>;
+    };
+
+...