Re: [PATCH 1/3] dt-bindings: iio: chemical: Add binding for CCS811 VOC sensor

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On Mon, 13 Apr 2020 00:06:56 +0530
mani@xxxxxxxxxx wrote:

> From: Manivannan Sadhasivam <mani@xxxxxxxxxx>
> 
> This commit adds devicetree binding for AMS CCS811 VOC sensor.
> 
> Signed-off-by: Manivannan Sadhasivam <mani@xxxxxxxxxx>
Great to see this driver getting some more attention.

A few things inline

Thanks,

Jonathan

> ---
>  .../bindings/iio/chemical/ams,ccs811.yaml     | 50 +++++++++++++++++++
>  1 file changed, 50 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/chemical/ams,ccs811.yaml
> 
> diff --git a/Documentation/devicetree/bindings/iio/chemical/ams,ccs811.yaml b/Documentation/devicetree/bindings/iio/chemical/ams,ccs811.yaml
> new file mode 100644
> index 000000000000..564208af7b2b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/chemical/ams,ccs811.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: GPL-2.0

Preferred that all new binding docs are dual licensed with BSD as well
to allow there use by things other than the kernel.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/chemical/ams,ccs811.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: AMS CCS811 VOC Sensor
> +
> +maintainers:
> +  - Narcisa Vasile <narcisaanamaria12@xxxxxxxxx>
> +
> +description: |
> +  Ultra-Low Power Digital Gas Sensor for Monitoring Indoor Air Quality.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ams,ccs811
> +  reg:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    description: GPIO connected to the nRESET line. This is an active low
> +                 input to CCS811.
> +    maxItems: 1
> +
> +  wakeup-gpios:
> +    description: GPIO connected to the nWAKE line. This is an active low
> +                 input to CCS811.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      ccs811@5b {
Hmm. Not sure we have a generic name in the dt spec for voc sensor.
Even so we should try for something appropriate.

Could go with voc@5b?

> +        compatible = "ams,ccs811";
> +        reg = <0x5b>;
> +        reset-gpios = <&gpioa 11 GPIO_ACTIVE_LOW>;
> +        wakeup-gpios = <&gpioa 12 GPIO_ACTIVE_LOW>;
> +      };
> +    };
> +
> +...




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