Re: [PATCH v2 1/4] dt-bindings: iio: adc: amlogic,meson-saradc: add S4 compatible

[Martin Blumenstingl]

On Mon, Mar 23, 2026 at 8:53 AM Krzysztof Kozlowski <krzk@xxxxxxxxxx> wrote:
>
> On Mon, Mar 23, 2026 at 09:34:05AM +0800, Nick Xie wrote:
> > Add the compatible string for the SARADC (Successive Approximation
> > Register ADC) IP block found in the Amlogic Meson S4 SoC.
> >
> > There are no known differences between the SARADC on S4 and the one
> > on G12A. Therefore, it uses "amlogic,meson-g12a-saradc" as a proper
> > specific fallback.
>
> You should explain here why you are adding that comment.
What do you think about:
Also add a comment indicating that "amlogic,meson-saradc" must not be
used for new devices. It's a made up compatible string that does not
correspond to a specific hardware generation and is not used to match
any driver. For old devices we keep it as it's part of the ABI.