dt-bindings: pps: pps-gpio: Convert to yaml

Convert from pps-gpio.txt to pps-gpio.yaml to allow schema validation.

Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Rodolfo Giometti <giometti@enneenne.com>
Link: https://lore.kernel.org/r/20230818174159.1680572-1-festevam@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pps/pps-gpio.yaml

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pps/pps-gpio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PPS Signal via GPIO
+
+maintainers:
+  - Fabio Estevam <festevam@gmail.com>
+
+properties:
+  compatible:
+    const: pps-gpio
+
+  gpios:
+    description: The GPIO that provides the PPS signal.
+    maxItems: 1
+
+  echo-gpios:
+    description: The GPIO that provides the PPS ECHO signal.
+    maxItems: 1
+
+  echo-active-ms:
+    description: Duration in ms of the active portion of the echo pulse.
+
+  assert-falling-edge:
+    description: Indicates a falling edge assert, when present. Rising edge if absent.
+    type: boolean
+
+required:
+  - compatible
+  - gpios
+
+additionalProperties: false
+
+examples:
+  - |
+      #include <dt-bindings/gpio/gpio.h>
+
+      pps {
+          compatible = "pps-gpio";
+          pinctrl-names = "default";
+          pinctrl-0 = <&pinctrl_pps>;
+          gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>;
+          assert-falling-edge;
+          echo-gpios = <&gpio1 27 GPIO_ACTIVE_HIGH>;
+          echo-active-ms = <100>;
+      };