dt-bindings: input: qcom,pm8921-pwrkey: convert to dt-schema

Convert input/qcom,pm8xxx-pwrkey.txt to YAML, and take in account that
the PM8921 pwrkey compatible is used as fallback for the PM8018 pwrkey.

Reviewed-by: Rob Herring <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Neil Armstrong <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

Documentation/devicetree/bindings/input/qcom,pm8921-pwrkey.yaml

···
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/qcom,pm8921-pwrkey.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm PM8921 PMIC Power Key
+
+maintainers:
+  - Bjorn Andersson <[e-mail]>
+
+allOf:
+  - $ref: input.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - qcom,pm8921-pwrkey
+          - qcom,pm8058-pwrkey
+      - items:
+          - enum:
+              - qcom,pm8018-pwrkey
+          - const: qcom,pm8921-pwrkey
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    items:
+      - description: key release
+      - description: key press
+
+  debounce:
+    description:
+      Time in microseconds that key must be pressed or
+      released for state change interrupt to trigger.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  pull-up:
+    description:
+      Presence of this property indicates that the KPDPWR_N
+      pin should be configured for pull up.
+    $ref: /schemas/types.yaml#/definitions/flag
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+   #include <dt-bindings/interrupt-controller/irq.h>
+   ssbi {
+     #address-cells = <1>;
+     #size-cells = <0>;
+
+     pmic@0 {
+       reg = <0x0>;
+       #address-cells = <1>;
+       #size-cells = <0>;
+
+       pwrkey@1c {
+         compatible = "qcom,pm8921-pwrkey";
+         reg = <0x1c>;
+         interrupt-parent = <&pmicint>;
+         interrupts = <50 IRQ_TYPE_EDGE_RISING>, <51 IRQ_TYPE_EDGE_RISING>;
+         debounce = <15625>;
+         pull-up;
+       };
+     };
+   };
+...

Documentation/devicetree/bindings/input/qcom,pm8xxx-pwrkey.txt

···
-Qualcomm PM8xxx PMIC Power Key
-
-PROPERTIES
-
-- compatible:
-	Usage: required
-	Value type: <string>
-	Definition: must be one of:
-		    "qcom,pm8058-pwrkey"
-		    "qcom,pm8921-pwrkey"
-
-- reg:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: address of power key control register
-
-- interrupts:
-	Usage: required
-	Value type: <prop-encoded-array>
-	Definition: the first interrupt specifies the key release interrupt
-		    and the second interrupt specifies the key press interrupt.
-		    The format of the specifier is defined by the binding
-		    document describing the node's interrupt parent.
-
-- debounce:
-	Usage: optional
-	Value type: <u32>
-	Definition: time in microseconds that key must be pressed or release
-		    for state change interrupt to trigger.
-
-- pull-up:
-	Usage: optional
-	Value type: <empty>
-	Definition: presence of this property indicates that the KPDPWR_N pin
-		    should be configured for pull up.
-
-EXAMPLE
-
-	pwrkey@1c {
-		compatible = "qcom,pm8921-pwrkey";
-		reg = <0x1c>;
-		interrupt-parent = <&pmicintc>;
-		interrupts = <50 1>, <51 1>;
-		debounce = <15625>;
-		pull-up;
-	};