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

[Krzysztof Kozlowski <krzk@kernel.org>]

On 29/03/2025 17:49, Gyeyoung Baek wrote:
> 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#

Never tested.

> +$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.

serdev is Linux thing. Just drop description.

> +
> +properties:
> +  compatible:
> +    const: winsen,mhz19b
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    serial {
> +      mhz19b-co2-sensor {

Node names should be generic. See also an explanation and list of
examples (not exhaustive) in DT specification:
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation



Best regards,
Krzysztof