linux-kernel - Re: [PATCH 2/7] dt-bindigns: regulator: mtk: Drop unneeded compatible

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Message-ID: <20210324161643.GA3170381@robh.at.kernel.org>
Date:   Wed, 24 Mar 2021 10:16:43 -0600
From:   Rob Herring <robh@...nel.org>
To:     Enric Balletbo Serra <eballetbo@...il.com>
Cc:     matthias.bgg@...nel.org, Lee Jones <lee.jones@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Matthias Brugger <mbrugger@...e.com>
Subject: Re: [PATCH 2/7] dt-bindigns: regulator: mtk: Drop unneeded compatible

On Thu, Mar 18, 2021 at 03:11:56PM +0100, Enric Balletbo Serra wrote:
> Hi Matthias,
> 
> Thank you for your patch. There is a typo in the subject line
> s/dt-bindigns/dt-bindings/ Rob might miss this patch as he filters the
> patches by subject I guess.

I should, then I'd have a lot less to review...

> 
> Missatge de l'adreça <matthias.bgg@...nel.org> del dia dv., 12 de març
> 2021 a les 15:57:
> >
> > From: Matthias Brugger <mbrugger@...e.com>
> >
> > The regulator does not need to have a device tree compatible, if it's
> > part of an MFD. We leave the node name to the SoC specific name (e.g.
> > mt6323regulator) to allow older kernels to work with the new binding.
> >
> > Signed-off-by: Matthias Brugger <mbrugger@...e.com>
> > ---
> >  .../bindings/regulator/mt6323-regulator.txt        |  2 +-
> >  .../bindings/regulator/mt6358-regulator.txt        |  4 +---
> >  .../bindings/regulator/mt6397-regulator.txt        | 14 +++++---------
> >  3 files changed, 7 insertions(+), 13 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/regulator/mt6323-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
> > index a48749db4df36..69f32e1a6702e 100644
> > --- a/Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
> > +++ b/Documentation/devicetree/bindings/regulator/mt6323-regulator.txt
> > @@ -19,7 +19,7 @@ LDO:
> >  Example:
> >
> >         pmic: mt6323 {

This one is wrong...

> > -               mt6323regulator: regulators {
> > +               mt6323regulator {

And this was right.

> 
> If you convert this binding to YAML, you'll probably get a review that
> the node name must be just 'regulators' here. And then, looking at the
> other patches something will break I guess ...
> 
> >                         mt6323_vproc_reg: buck_vproc{
> >                                 regulator-name = "vproc";
> >                                 regulator-min-microvolt = < 700000>;
> > diff --git a/Documentation/devicetree/bindings/regulator/mt6358-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6358-regulator.txt
> > index 9a90a92f2d7e1..ba1214da5bf7c 100644
> > --- a/Documentation/devicetree/bindings/regulator/mt6358-regulator.txt
> > +++ b/Documentation/devicetree/bindings/regulator/mt6358-regulator.txt
> > @@ -23,9 +23,7 @@ Example:
> >         pmic {
> >                 compatible = "mediatek,mt6358";
> >
> > -               mt6358regulator: mt6358regulator {
> > -                       compatible = "mediatek,mt6358-regulator";
> > -
> > +               mt6358regulator {
> >                         mt6358_vdram1_reg: buck_vdram1 {
> >                                 regulator-compatible = "buck_vdram1";
> >                                 regulator-name = "vdram1";
> > diff --git a/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt b/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
> > index c080086d3e629..2b14362ac56e1 100644
> > --- a/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
> > +++ b/Documentation/devicetree/bindings/regulator/mt6397-regulator.txt
> > @@ -1,11 +1,9 @@
> >  Mediatek MT6397 Regulator
> >
> > -Required properties:
> > -- compatible: "mediatek,mt6397-regulator"
> > -- mt6397regulator: List of regulators provided by this controller. It is named
> > -  according to its regulator type, buck_<name> and ldo_<name>.
> > -  The definition for each of these nodes is defined using the standard binding
> > -  for regulators at Documentation/devicetree/bindings/regulator/regulator.txt.
> > +List of regulators provided by this controller. It is named
> > +according to its regulator type, buck_<name> and ldo_<name>.
> > +The definition for each of these nodes is defined using the standard binding
> > +for regulators at Documentation/devicetree/bindings/regulator/regulator.txt.
> >
> >  The valid names for regulators are::
> >  BUCK:
> > @@ -23,9 +21,7 @@ Example:
> >         pmic {
> >                 compatible = "mediatek,mt6397";
> >
> > -               mt6397regulator: mt6397regulator {
> > -                       compatible = "mediatek,mt6397-regulator";
> > -
> > +               mt6397regulator {
> >                         mt6397_vpca15_reg: buck_vpca15 {
> >                                 regulator-compatible = "buck_vpca15";
> >                                 regulator-name = "vpca15";
> > --
> > 2.30.1
> >
> >
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek

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