linux-kernel - Re: [PATCH v2 2/2] dt-bindings: regulator: Add bindings for Unisoc's SC2730 regulator

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Message-ID: <CAAfSe-uA3iowafC25zRqoTSaub1PbOzUvQgukLm=szEge_abvw@mail.gmail.com>
Date:   Thu, 22 Sep 2022 16:25:44 +0800
From:   Chunyan Zhang <zhang.lyra@...il.com>
To:     Mark Brown <broonie@...nel.org>, Lee Jones <lee.jones@...aro.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        Baolin Wang <baolin.wang7@...il.com>,
        Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] dt-bindings: regulator: Add bindings for Unisoc's
 SC2730 regulator

Hi Mark,

Sorry for the late response.
[1] is the v1 on which we had some discussion. I hope that can help
recall the issue below.

On Fri, 12 Nov 2021 at 21:46, Mark Brown <broonie@...nel.org> wrote:
>
> On Fri, Oct 08, 2021 at 11:19:53AM +0800, Chunyan Zhang wrote:
>
> > +properties:
> > +  compatible:
> > +    const: sprd,sc2730-regulator
>
> I still don't understand why this MFD subfunction for a specific device
> is a separate binding with a separate compatible string, the issues I
> mentioned previously with this just encoding current Linux internals
> into the DT rather than describing the device still apply.

I understand your point. But like I described previously [1], if we
still use the current solution (i.e. use devm_of_platform_populate()
to register MFD subdevices), a compatible string is required. I'm open
to switching to other solutions, do you have some suggestions?

Thanks,
Chunyan

[1] https://lkml.org/lkml/2021/9/29/1166