Re: [PATCH 3/3] dt-bindings: iio: adc: add lltc,ltc2309 bindings

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On 24/08/2023 18:55, Liam Beguin wrote:
> Add devicetree bindings for the Linear Technology LTC2309 ADC driver.
> 
> Signed-off-by: Liam Beguin <liambeguin@xxxxxxxxx>

Thank you for your patch. There is something to discuss/improve.


> +++ b/Documentation/devicetree/bindings/iio/adc/lltc,ltc2309.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: GPL-2.0

Wrong license. Run checkpatch before sending patches.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/adc/lltc,ltc2309.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Linear Technology / Analog Devices LTC2309 ADC
> +
> +maintainers:
> +  - Liam Beguin <liambeguin@xxxxxxxxx>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - lltc,ltc2309
> +
> +  refcomp-supply:
> +    description: Power supply for the reference voltage

refcomp is not a supply. It is called "Reference Buffer Output.". You
probably wanted vref-supply, which suggests you should just add it to
ltc2497 bindings. I don't see any differences.

> +
> +  reg:
> +    enum:
> +      - 0x08
> +      - 0x09
> +      - 0x0a
> +      - 0x0b
> +      - 0x18
> +      - 0x19
> +      - 0x1a
> +      - 0x1b
> +      - 0x28
> +
> +  "#io-channel-cells":
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        adc@28 {
> +            #io-channel-cells = <1>;
> +            compatible = "lltc,ltc2309";
> +            reg = <0x28>;

If the example stays, then order is compatible first, then reg, then the
rest. Also add the supply to make example complete.

But I think this should be squashed with other binding so no need for
the example.

Best regards,
Krzysztof




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