linux-kernel - Re: [RFC PATCH 1/5] dt-bindings: mfd: add entry for the Marvell 88PM88X PMICs

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Date: Fri, 22 Dec 2023 18:25:17 +0100
From: "Karel Balej" <karelb@...li.ms.mff.cuni.cz>
To: "Rob Herring" <robh@...nel.org>
Cc: "Karel Balej" <balejk@...fyz.cz>, "Dmitry Torokhov"
 <dmitry.torokhov@...il.com>, "Krzysztof Kozlowski"
 <krzysztof.kozlowski+dt@...aro.org>, "Conor Dooley" <conor+dt@...nel.org>,
 "Lee Jones" <lee@...nel.org>, <linux-input@...r.kernel.org>,
 <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
 Duje Mihanović <duje.mihanovic@...le.hr>,
 <~postmarketos/upstreaming@...ts.sr.ht>, <phone-devel@...r.kernel.org>
Subject: Re: [RFC PATCH 1/5] dt-bindings: mfd: add entry for the Marvell
 88PM88X PMICs

Rob,

thank you very much for your feedback.

On Mon Dec 18, 2023 at 4:17 PM CET, Rob Herring wrote:
> > +  Marvell 88PM880 and 88PM886 are two similar PMICs providing
> > +  several functions such as onkey, regulators or battery and
> > +  charger. Both seem to come in two revisions -- A0 and A1.
> > +
> > +properties:
> > +  compatible:
> > +    const: marvell,88pm886-a1
>
> The description talks about 4 different devices, but only 1 here. 
>
> Do you expect to need A0 support? Devices with these PMICs should be 
> known and few, right? 

I know of three smartphones which have 88PM886 and all of them (at least
the revisions that have been tested) seem to use A1. So no, I don't know
of any device that would need A0, but I wanted have the driver ready in
case somebody needed to add it later. What change do you then suggest?

Thank you and kind regards,
K. B.