linux-kernel - Re: [PATCH 0/3] Fairphone 5 PMIC-GLINK support (USB-C, charger, fuel gauge)

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Message-ID: <CAA8EJpoD3x=kVLu4x2yLtAqCp=wmGSU4ssq5Oj_SD5VQ=GyAYQ@mail.gmail.com>
Date: Thu, 21 Dec 2023 12:34:40 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Luca Weiss <luca.weiss@...rphone.com>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>, Bjorn Andersson <andersson@...nel.org>, 
	Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, cros-qcom-dts-watchers@...omium.org, 
	~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [PATCH 0/3] Fairphone 5 PMIC-GLINK support (USB-C, charger, fuel gauge)

On Thu, 21 Dec 2023 at 09:33, Luca Weiss <luca.weiss@...rphone.com> wrote:
>
> On Wed Dec 20, 2023 at 1:32 PM CET, Konrad Dybcio wrote:
> > On 20.12.2023 11:02, Luca Weiss wrote:
> > > This series adds all the necessary bits to enable USB-C role switching,
> > > charger and fuel gauge (all via pmic-glink) on Fairphone 5.
> > >
> > > One thing that could be made different is the pmic-glink compatible.
> > > I've chosen to use qcm6490 compatible for it and not sc7280 since
> > > there's plenty of firmware variety on sc7280-based platforms and they
> > > might require different quirks in the future, so limit this PDOS quirk
> > > to just qcm6490 for now.
> > >
> > > If someone thinks it should be qcom,sc7280-pmic-glink, please let me
> > > know :)
> > IMO it's best to continue using the "base soc" (which just so happened
> > to fall onto sc7280 this time around) for all compatibles, unless the
> > derivatives actually had changes
>
> Hi Konrad,
>
> I think at some point I asked Dmitry what he thought and he mentioned
> qcm6490. Even found the message again:
>
> > well, since it is a firmware thing, you might want to emphasise that.
> > So from my POV qcm6490 makes more sense
>
> But yeah since it's likely that sc7280 firmware behaves the same as
> qcm6490 firmware it's probably okay to use sc7280 compatible, worst case
> we change it later :) I'll send a v2 with those changes.

Worst case we end up with sc7280 which has yet another slightly
different UCSI / PMIC GLINK implementation, but the compatible string
is already taken.
I still suppose that this should be a qcm6490-related string.

>
> Regards
> Luca
>
> >
> > as far as firmware goes, I *think* CrOS doesn't even have PMIC_GLINK?
> > There are however WoA 7280 laptops which totally should have it.. Would
> > be nice to hunt some down and see if they report different stuff to
> > what's there on android firmware
> >
> > Konrad
>


-- 
With best wishes
Dmitry