linux-kernel - Re: [PATCH v4 2/4] platform: Add ARM64 platform directory

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Date: Tue, 12 Mar 2024 13:45:25 +0200 (EET)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
cc: Nikita Travkin <nikita@...n.ru>, Hans de Goede <hdegoede@...hat.com>, 
    Sebastian Reichel <sre@...nel.org>, Rob Herring <robh+dt@...nel.org>, 
    Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
    Conor Dooley <conor+dt@...nel.org>, cros-qcom-dts-watchers@...omium.org, 
    Andy Gross <agross@...nel.org>, Bjorn Andersson <andersson@...nel.org>, 
    Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>, 
    devicetree@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>, 
    linux-arm-msm@...r.kernel.org, platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH v4 2/4] platform: Add ARM64 platform directory

On Tue, 12 Mar 2024, Bryan O'Donoghue wrote:

> On 12/03/2024 08:42, Nikita Travkin wrote:
> > Some ARM64 based laptops and computers require vendor/board specific
> > drivers for their embedded controllers. Even though usually the most
> > important functionality of those devices is implemented inside ACPI,
> > unfortunately Linux doesn't currently have great support for ACPI on
> > platforms like Qualcomm Snapdragon that are used in most ARM64 laptops
> > today. Instead Linux relies on Device Tree for Qualcomm based devices
> > and it's significantly easier to reimplement the EC functionality in
> > a dedicated driver than to make use of ACPI code.
> > 
> > This commit introduces a new platform/arm64 subdirectory to give a
> > place to such drivers for EC-like devices.
> > 
> > A new MAINTAINERS entry is added for this directory. Patches to files in
> > this directory will be taken up by the platform-drivers-x86 team (i.e.
> > Hans de Goede and Mark Gross).
> > 
> > Signed-off-by: Nikita Travkin <nikita@...n.ru>
> > ---
> >   MAINTAINERS                     |  9 +++++++++
> >   drivers/platform/Kconfig        |  2 ++
> >   drivers/platform/Makefile       |  1 +
> >   drivers/platform/arm64/Kconfig  | 19 +++++++++++++++++++
> >   drivers/platform/arm64/Makefile |  6 ++++++
> >   5 files changed, 37 insertions(+)
> > 
> > diff --git a/MAINTAINERS b/MAINTAINERS
> > index b43102ca365d..ec8d706a99aa 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -3050,6 +3050,15 @@ F:	drivers/mmc/host/sdhci-of-arasan.c
> >   N:	zynq
> >   N:	xilinx
> >   +ARM64 PLATFORM DRIVERS
> > +M:	Hans de Goede <hdegoede@...hat.com>
> > +M:	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
> > +L:	platform-driver-x86@...r.kernel.org
> > +S:	Maintained
> > +Q:	https://patchwork.kernel.org/project/platform-driver-x86/list/
> > +T:	git
> > git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
> 
> Surely some sort of Arm specific mailing list should be added here ?
> platform-drivers-x86 for arm64 platform drivers standalone, makes little
> sense.
> 
> Perhaps for each new SoC class added - you could add the appropriate mailing
> list linux-arm-msm is suspiciously missing from the list even though the only
> driver that will live in this directory after this series is a qcom based
> device.
> 
> And if tomorrow someone added a Rockchip based EC controller then you'd assume
> the rockchip mailing list should get a ping.

While generic arm mailing list is perhaps lacking too, for specific 
driver related lists it is better to add separate MAINTAINERS entries for 
the particular driver and put L: there.

-- 
 i.