linux-kernel - Re: [PATCH v6 5/9] dt-bindings: iio: add backend support to sd modulator

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Message-ID: <172295577315.1501618.14038896087472078381.robh@kernel.org>
Date: Tue, 6 Aug 2024 08:49:33 -0600
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Olivier Moysan <olivier.moysan@...s.st.com>
Cc: fabrice.gasnier@...s.st.com, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Jonathan Cameron <jic23@...nel.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
	Conor Dooley <conor+dt@...nel.org>,
	Arnaud Pouliquen <arnaud.pouliquen@...s.st.com>
Subject: Re: [PATCH v6 5/9] dt-bindings: iio: add backend support to sd
 modulator


On Tue, 30 Jul 2024 10:46:35 +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         | 18 ++++++++++++++++--
>  1 file changed, 16 insertions(+), 2 deletions(-)
> 

Reviewed-by: Rob Herring (Arm) <robh@...nel.org>