[PATCH 2/3] dt-bindings: add device tree support for winsen MHZ19B CO2 sensor

[Gyeyoung Baek <gye976@gmail.com>]

Add device tree support for winsen MHZ19B sensor.

Signed-off-by: Gyeyoung Baek <gye976@gmail.com>
---
 .../bindings/iio/chemical/winsen,mhz19b.yaml  | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml

diff --git a/Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml b/Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml
new file mode 100644
index 000000000000..c08681e43281
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/chemical/winsen,mhz19b.yaml
@@ -0,0 +1,31 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/chemical/dht11.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MHZ19B CO2 sensor
+
+maintainers:
+  - Gyeyoung Baek <gye976@gmail.com>
+
+description: |
+   CO2 sensor using UART serdev bus interface.
+
+properties:
+  compatible:
+    const: winsen,mhz19b
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    serial {
+      mhz19b-co2-sensor {
+        compatible = "winsen,mhz19b";
+      };
+    };
+...
-- 
2.34.1