linux-kernel - Re: [PATCH v2 5/9] dt-bindings: iio: dac: add ad3552r axi-dac compatible

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Message-ID: <boahpvyzzmocnnpae2u6meub34yvqr2q3v5pzf2egp2fretlwk@ibas62hdypwo>
Date: Fri, 6 Sep 2024 09:22:33 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Angelo Dureghello <adureghello@...libre.com>
Cc: Lars-Peter Clausen <lars@...afoo.de>, 
	Michael Hennerich <Michael.Hennerich@...log.com>, Nuno Sá <nuno.sa@...log.com>, 
	Jonathan Cameron <jic23@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	Olivier Moysan <olivier.moysan@...s.st.com>, linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, David Lechner <dlechner@...libre.com>
Subject: Re: [PATCH v2 5/9] dt-bindings: iio: dac: add ad3552r axi-dac
 compatible

On Thu, Sep 05, 2024 at 05:17:35PM +0200, Angelo Dureghello wrote:
> From: Angelo Dureghello <adureghello@...libre.com>
> 
> Add a new compatible for the ad3552r variant of the generic DAC IP.
> 
> The ad3552r DAC IP variant is very similar to the generic DAC IP,
> register map is the same, but some register fields are specific to
> this IP, and also, a DDR QSPI bus has been included in the IP.
> 
> Signed-off-by: Angelo Dureghello <adureghello@...libre.com>
> ---
>  Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
> index a55e9bfc66d7..c0cccb7a99a4 100644
> --- a/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
> +++ b/Documentation/devicetree/bindings/iio/dac/adi,axi-dac.yaml
> @@ -24,6 +24,7 @@ properties:
>    compatible:
>      enum:
>        - adi,axi-dac-9.1.b
> +      - adi,axi-dac-ad3552r

I am sorry, but what is the product here? It looks like either wrong
order or even completely redundant. What is ad3552r?

And why versions are mixed with real products but without any
compatibility. What does the version express in such case?

Best regards,
Krzysztof