dt-bindings: watchdog: qcom,pm8916-wdt: convert to dtschema

Convert the Qualcomm PM8916 watchdog timer controller bindings to DT
schema and include them in parent device schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220726120215.101868-3-krzysztof.kozlowski@linaro.org

Documentation/devicetree/bindings/power/reset/qcom,pon.yaml

@@ -36,6 +36,10 @@ properties:
     type: object
     $ref: /schemas/input/qcom,pm8941-pwrkey.yaml#
 
+  watchdog:
+    type: object
+    $ref: /schemas/watchdog/qcom,pm8916-wdt.yaml
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/watchdog/qcom,pm8916-wdt.txt

-QCOM PM8916 watchdog timer controller
-
-This pm8916 watchdog timer controller must be under pm8916-pon node.
-
-Required properties:
-- compatible: should be "qcom,pm8916-wdt"
-
-Optional properties :
-- interrupts : Watchdog pre-timeout (bark) interrupt.
-- timeout-sec : Watchdog timeout value in seconds.
-
-Example:
-
-	pm8916_0: pm8916@0 {
-		compatible = "qcom,pm8916", "qcom,spmi-pmic";
-		reg = <0x0 SPMI_USID>;
-
-		pon@800 {
-			compatible = "qcom,pm8916-pon";
-			reg = <0x800>;
-
-			watchdog {
-				compatible = "qcom,pm8916-wdt";
-				interrupts = <0x0 0x8 6 IRQ_TYPE_EDGE_RISING>;
-				timeout-sec = <10>;
-			};
-		};
-	};

Documentation/devicetree/bindings/watchdog/qcom,pm8916-wdt.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/qcom,pm8916-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm PM8916 watchdog timer controller
+
+maintainers:
+  - Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
+
+allOf:
+  - $ref: watchdog.yaml#
+
+properties:
+  compatible:
+    const: qcom,pm8916-wdt
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/spmi/spmi.h>
+
+    pmic@0 {
+        compatible = "qcom,pm8916", "qcom,spmi-pmic";
+        reg = <0x0 SPMI_USID>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pon@800 {
+            compatible = "qcom,pm8916-pon";
+            reg = <0x800>;
+            mode-bootloader = <0x2>;
+            mode-recovery = <0x1>;
+
+            watchdog {
+                compatible = "qcom,pm8916-wdt";
+                interrupts = <0x0 0x8 6 IRQ_TYPE_EDGE_RISING>;
+                timeout-sec = <60>;
+            };
+        };
+    };