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 a switch 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 the shutdown period at
+  PB_IN results in a longer one-shot interrupt output. The MAX16150 family has
+  two sets 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 controller can be found at:
+    https://www.analog.com/en/products/max16150.html
+    https://www.analog.com/en/products/max16169.html
+
+properties:
+  compatible:
+    enum:
+      - maxim,max16150
+
+required:
+  - compatible
+  - gpios
+  - interrupt-parent
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    max16150: max16150@0 {
+        compatible = "maxim,max16150";
+        gpio-controller;
+        #gpio-cells = <2>;
+
+        pinctrl-names = "default";
+        pinctrl-0 = <&max16150_pins>;
+
+        interrupt-parent = <&gpio>;
+        interrupts = <17 2>;
+
+        status = "okay";
+
+        max16150_pins: pinmux {
+            max16150_gpio0 {
+                pins = "gpio17", "gpio27";
+                function = "gpio";
+                bias-pull-up;
+            };
+        };
+    };