gpio: Add dts binding for software debounce gpio

Created dts binding for software debounced gpio

Signed-off-by: Al Semjonovs <[email protected]>

Author: asemjonovs

dts/bindings/gpio/zephyr,gpio-keys.yaml

@@ -0,0 +1,8 @@
+# Copyright (c) 2022 Google LLC
+# SPDX-License-Identifier: Apache-2.0
+
+description: Zephyr GPIO KEYS parent node
+
+compatible: "zephyr,gpio-keys"
+
+include: [gpio-keys.yaml]

dts/bindings/input/gpio-keys.yaml

@@ -7,6 +7,14 @@ compatible: "gpio-keys"
 
 include: base.yaml
 
+properties:
+   debounce-interval-ms:
+      type: int
+      default: 30
+      description: |
+         Debouncing interval time in milliseconds.
+         If not specified defaults to 30.
+
 child-binding:
     description: GPIO KEYS child node
     properties:
@@ -16,3 +24,7 @@ child-binding:
        label:
           type: string
           description: Descriptive name of the key
+       zephyr,code:
+          type: int
+          default: 0
+          description: Key / Axis code to emit.