linux-kernel - Re: [PATCH v15 01/10] MAINTAINERS: Include new Qualcomm CPR drivers in the file list

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Message-ID: <CAPDyKFqhmNqbZ9Xkg0tWHE5LavoNaGMyE3dKmAFtHdS5=x33NA@mail.gmail.com>
Date: Mon, 15 Jul 2024 13:34:01 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, Andy Gross <agross@...nel.org>, 
	Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Viresh Kumar <vireshk@...nel.org>, 
	Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>, Niklas Cassel <nks@...wful.org>, 
	Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>, 
	Viresh Kumar <viresh.kumar@...aro.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Robert Marko <robimarko@...il.com>, linux-kernel@...r.kernel.org, 
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-pm@...r.kernel.org, Jeffrey Hugo <quic_jhugo@...cinc.com>, 
	Marijn Suijten <marijn.suijten@...ainline.org>, Konrad Dybcio <konradybcio@...nel.org>, 
	Varadarajan Narayanan <quic_varada@...cinc.com>
Subject: Re: [PATCH v15 01/10] MAINTAINERS: Include new Qualcomm CPR drivers
 in the file list

On Tue, 9 Jul 2024 at 16:42, Krzysztof Kozlowski <krzk@...nel.org> wrote:
>
> On 09/07/2024 11:49, Konrad Dybcio wrote:
> > On 9.07.2024 11:04 AM, Krzysztof Kozlowski wrote:
> >> On 08/07/2024 14:22, Konrad Dybcio wrote:
> >>> Expand the Qualcomm Core Power Reduction section to include the files
> >>> concerning CPR3+ support.
> >>>
> >>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> >>> ---
> >>>  MAINTAINERS | 5 +++--
> >>>  1 file changed, 3 insertions(+), 2 deletions(-)
> >>>
> >>> diff --git a/MAINTAINERS b/MAINTAINERS
> >>> index dcb37b635f2c..f3e013a52c16 100644
> >>> --- a/MAINTAINERS
> >>> +++ b/MAINTAINERS
> >>> @@ -18687,14 +18687,15 @@ F:        Documentation/accel/qaic/
> >>>  F: drivers/accel/qaic/
> >>>  F: include/uapi/drm/qaic_accel.h
> >>>
> >>> -QUALCOMM CORE POWER REDUCTION (CPR) AVS DRIVER
> >>> +QUALCOMM CORE POWER REDUCTION (CPR) AVS DRIVERS
> >>>  M: Bjorn Andersson <andersson@...nel.org>
> >>>  M: Konrad Dybcio <konrad.dybcio@...aro.org>
> >>>  L: linux-pm@...r.kernel.org
> >>>  L: linux-arm-msm@...r.kernel.org
> >>>  S: Maintained
> >>>  F: Documentation/devicetree/bindings/power/avs/qcom,cpr.yaml
> >>> -F: drivers/pmdomain/qcom/cpr.c
> >>> +F: Documentation/devicetree/bindings/soc/qcom/qcom,cpr3.yaml
> >>
> >> Maybe combine these two into:
> >> Documentation/devicetree/bindings/power/avs/qcom,cpr*
> >
> > I think avs was proposed to be a subsystem/driver directory at some point
> > and (adaptive voltage source? something like that) and this is the only file
> > in that directory in bindings..
> >
> > Should we continue with this "class" of devices, or should I move qcom,cpr.yaml
> > to soc?
>
> Rather cpr3 should be moved to avs or some other power directory. "soc"
> is fallback, junkyard for things without clear domain.

In my opinion, I would suggest dropping the
"Documentation/devicetree/bindings/power/avs/" directory. We already
have similar bindings sprinkled across various directories, see below.
One less seems better to me.

Documentation/devicetree/bindings/arm/*
Documentation/devicetree/bindings/firmware/*
Documentation/devicetree/bindings/power/*
Documentation/devicetree/bindings/soc/*

Kind regards
Uffe