dt-bindings: iio: chemical: pms7003: convert bindings to yaml

Convert existing device tree bindings to yaml.

Signed-off-by: Tomasz Duszynski <tduszyns@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.txt

@@ -1,26 +0,0 @@
-* Plantower PMS7003 particulate matter sensor
-
-Required properties:
-- compatible: must one of:
-   "plantower,pms1003"
-   "plantower,pms3003"
-   "plantower,pms5003"
-   "plantower,pms6003"
-   "plantower,pms7003"
-   "plantower,pmsa003"
-- vcc-supply: phandle to the regulator that provides power to the sensor
-
-Optional properties:
-- plantower,set-gpios: phandle to the GPIO connected to the SET line
-- reset-gpios: phandle to the GPIO connected to the RESET line
-
-Refer to serial/slave-device.txt for generic serial attached device bindings.
-
-Example:
-
-&uart0 {
-	air-pollution-sensor {
-		compatible = "plantower,pms7003";
-		vcc-supply = <&reg_vcc5v0>;
-	};
-};

Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml

@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/chemical/plantower,pms7003.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Plantower PMS7003 air pollution sensor
+
+maintainers:
+  - Tomasz Duszynski <tduszyns@gmail.com>
+
+description: |
+  Air pollution sensor capable of measuring mass concentration of dust
+  particles.
+
+properties:
+  compatible:
+    enum:
+      - plantower,pms1003
+      - plantower,pms3003
+      - plantower,pms5003
+      - plantower,pms6003
+      - plantower,pms7003
+      - plantower,pmsa003
+
+  vcc-supply:
+    description: regulator that provides power to the sensor
+    maxItems: 1
+
+  plantower,set-gpios:
+    description: GPIO connected to the SET line
+    maxItems: 1
+
+  reset-gpios:
+    description: GPIO connected to the RESET line
+    maxItems: 1
+
+required:
+  - compatible
+  - vcc-supply
+
+examples:
+  - |
+    serial {
+      air-pollution-sensor {
+        compatible = "plantower,pms7003";
+        vcc-supply = <&reg_vcc5v0>;
+      };
+    };
+
+...