Re: [PATCH 2/2] dt-bindings: iio: adc: nxp,imx93-adc.yaml: Add calibration properties

[Andrej Picej]

Hi Krzysztof,

On 20. 03. 24 11:26, Krzysztof Kozlowski wrote:
> On 20/03/2024 11:04, Andrej Picej wrote:
> > Document calibration properties and how to set them.
>
> Bindings are before users.

will change patch order when I send a v2.

> Please use subject prefixes matching the subsystem. You can get them for
> example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
> your patch is touching.
> There is no file extension in prefixes.

So: dt-bindings: iio/adc: nxp,imx93-adc: Add calibration properties?

> > Signed-off-by: Andrej Picej <andrej.picej@xxxxxxxxx>
> > ---
> >   .../bindings/iio/adc/nxp,imx93-adc.yaml           | 15 +++++++++++++++
> >   1 file changed, 15 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml b/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
> > index dacc526dc695..64958be62a6a 100644
> > --- a/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
> > +++ b/Documentation/devicetree/bindings/iio/adc/nxp,imx93-adc.yaml
> > @@ -46,6 +46,21 @@ properties:
> >     "#io-channel-cells":
> >       const: 1
> >   
> > +  nxp,calib-avg-en:
> > +    description:
> > +      Enable or disable averaging of calibration time.
> > +    enum: [ 0, 1 ]
> > +
> > +  nxp,calib-nr-samples:
> > +    description:
> > +      Selects the number of averaging samples to be used during calibration.
> > +    enum: [ 16, 32, 128, 512 ]
> > +
> > +  nxp,calib-t-samples:
> > +    description:
> > +      Specifies the sample time of calibration conversions.
> > +    enum: [ 8, 16, 22, 32 ]
>
> No, use existing, generic properties. Open other bindings for this.

You mean I should use generic properties for the ADC calibration 
settings? Is there already something in place? Because as I understand 
it, these calib-* values only effect the calibration process of the ADC.

> Also, none of these were tested. I am not going to review such untested
> code.
>
> It does not look like you tested the bindings, at least after quick
> look. Please run `make dt_binding_check` (see
> Documentation/devicetree/bindings/writing-schema.rst for instructions).
> Maybe you need to update your dtschema and yamllint.

You are right, I did not run the dt_binding_check, sorry for this, 
forgot that this existed. I see now I have to add the:
> $ref: /schemas/types.yaml#/definitions/uint32

Will fix in v2.

BR,
Andrej

> Best regards,
> Krzysztof