linux-kernel - Re: [PATCH v2 06/17] dt_bindings: regulator: Add ROHM BD71815 PMIC regulators

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Date:   Tue, 9 Feb 2021 07:50:52 -0600
From:   Rob Herring <robh@...nel.org>
To:     "Vaittinen, Matti" <Matti.Vaittinen@...rohmeurope.com>
Cc:     "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "bgolaszewski@...libre.com" <bgolaszewski@...libre.com>,
        "lee.jones@...aro.org" <lee.jones@...aro.org>,
        linux-power <linux-power@...rohmeurope.com>,
        "alexandre.belloni@...tlin.com" <alexandre.belloni@...tlin.com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "mturquette@...libre.com" <mturquette@...libre.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 06/17] dt_bindings: regulator: Add ROHM BD71815 PMIC regulators

On Tue, Feb 9, 2021 at 7:10 AM Vaittinen, Matti
<Matti.Vaittinen@...rohmeurope.com> wrote:
>
> Hello Again Rob,
>
> And thanks for reviewing the bindings!
>
> On Mon, 2021-02-08 at 20:24 -0600, Rob Herring wrote:
> > On Tue, Jan 19, 2021 at 09:17:09AM +0200, Matti Vaittinen wrote:
> > > Add binding documentation for regulators on ROHM BD71815 PMIC.
> > > 5 bucks, 7 LDOs and a boost for LED.
> > >
> > > Signed-off-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
> > > ---
>
> snip
>
> > > +
> > > +      rohm,dvs-run-voltage:
> >
> > Use standard unit suffix.
> >
> > > +        description:
> > > +          PMIC "RUN" state voltage in uV when PMIC HW states are
> > > used. See
> > > +          comments below for bucks/LDOs which support this. 0
> > > means
> > > +          regulator should be disabled at RUN state.
> > > +        $ref: "/schemas/types.yaml#/definitions/uint32"
> >
> > And then drop this.
>
> Quote from v1 review:
>
> > > > > > > +      rohm,dvs-run-voltage:
> > > > > >
> > > > > > These should have a unit suffix.
> > > > >
> > > > > I know but these are existing properties. I'd like to re-use
> them
> > > > > as
> > > > > they have exported parser helpers - and I am unsure what kind
> of
> > > > > breakages changing them would cause. (The BD71837/BD71847 which
> > > > > introduced these properties are one of the PMICs which are
> pretty
> > > > > widely used.)
> > > >
> > > > Okay. Hopefully I remember next time I see this...
> > >
> > > Actually, I think I can add support for rohm,dvs-run-microvolt and
> > > fellows to these same helpers so new devices can use appropriately
> > > named properties. That would mean there is duplicate properties for
> > > same purpose - but maybe it allows us to eventually deprecate the
> old
> > > ones... Which of these options would you prefer?
> >
> > Just keep the existing ones.
>
> Seem you predicted this XD If you still think it's Ok to keep the
> existing ones, then I'll take this an ack, Ok?

Ah right,

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