linux-kernel - Re: [PATCH v3 5/8] dt-bindings: iio: add backend support to sd modulator

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Message-Id: <172002803113.1236256.3525407174044863174.robh@kernel.org>
Date: Wed, 03 Jul 2024 11:33:51 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Olivier Moysan <olivier.moysan@...s.st.com>
Cc: linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Jonathan Cameron <jic23@...nel.org>, 
 Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>, 
 Conor Dooley <conor+dt@...nel.org>, Lars-Peter Clausen <lars@...afoo.de>
Subject: Re: [PATCH v3 5/8] dt-bindings: iio: add backend support to sd
 modulator


On Wed, 03 Jul 2024 18:05:30 +0200, Olivier Moysan wrote:
> The legacy sd modulator driver registers the sigma delta modulator as
> an IIO channel provider. This implementation is not convenient when the
> SD modulator has to be cascaded with another IIO device. The scaling
> information is distributed across devices, which makes it difficult to
> report consistent scaling data on IIO devices.
> 
> The solution is to expose these cascaded IIO devices as an aggregate
> device, which report global scaling information.
> Add IIO backend support to SD modulator to allow scaling information
> management.
> 
> Signed-off-by: Olivier Moysan <olivier.moysan@...s.st.com>
> ---
>  .../iio/adc/sigma-delta-modulator.yaml        | 24 +++++++++++++++++--
>  1 file changed, 22 insertions(+), 2 deletions(-)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:
./Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.yaml:38:5: [warning] wrong indentation: expected 6 but found 4 (indentation)

dtschema/dtc warnings/errors:
Documentation/devicetree/bindings/iio/adc/sigma-delta-modulator.example.dtb: /example-0/ads1201_0: failed to match any schema with compatible: ['ti,ads1201']

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20240703160535.2277871-6-olivier.moysan@foss.st.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.