dt-bindings: input: add adi,max16150.yaml

Add documentation for device tree bindings for MAX16150/MAX16169

Signed-off-by: Marc Paolo Sosa <marcpaolo.sosa@analog.com>

Author: mrcsosa

Documentation/devicetree/bindings/input/adi,max16150.yaml

@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/adi,max16150.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices MAX16150/MAX16169 nanoPower Pushbutton On/Off Controller
+
+maintainers:
+  - Marc Paolo Sosa <marcpaolo.sosa@analog.com>
+
+description: |
+  The MAX16150/MAX16169 is an extremely low-power, pushbutton, on/off controller
+  with avswitch debouncer and built-in latch. This device accepts a noisy input
+  from a mechanical switch and produces a clean, latched output, as well as a
+  one-shot interrupt output, in response to a switch closure exceeding the
+  debounce period at PB_IN. A switch closure longer than shutdown period at
+  PB_IN results in a longer one-shot interrupt output. The MAX16150 family has
+  two set of devices, one in which a longer switch closure greater than the
+  shutdown period deasserts the latched output, and another in which the latched
+  output stays asserted.
+
+  Specifications about the charger can be found at:
+    https://www.analog.com/en/products/max16150.html
+    https://www.analog.com/en/products/max16169.html
+
+properties:
+  compatible:
+    enum:
+      - adi,max16150
+      - adi,max16169
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - adi,variant
+
+additionalProperties: false
+
+examples:
+  - |
+    gpio {
+        max161x_pins: max161x_pins {
+            brcm,pins = <17 18 22 23>;
+            brcm,function = <0>;
+            brcm,pull = <0>;
+        };
+    };
+
+    max161x@0 {
+        compatible = "adi,max16150";
+        adi,variant = "A";
+
+        gpio-pb_in = <&gpio 17 1>;
+        gpio-out = <&gpio 18 0>;
+        gpio-clr = <&gpio 22 1>;
+        gpio-int = <&gpio 23 0>;
+
+        status = "okay";
+    };