linux-kernel - Re: [PATCH 00/12] ARM: ARMv5 multiplatform conversions

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Date:   Thu, 7 Apr 2022 09:31:06 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Russell King <linux@...linux.org.uk>,
        Hartley Sweeten <hsweeten@...ionengravers.com>,
        Alexander Sverdlin <alexander.sverdlin@...il.com>,
        Hubert Feurstein <hubert.feurstein@...tec.at>,
        Lukasz Majewski <lukma@...x.de>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Imre Kaloz <kaloz@...nwrt.org>,
        Krzysztof Halasa <khalasa@...p.pl>,
        Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Simtec Linux Team <linux@...tec.co.uk>,
        Liviu Dudau <liviu.dudau@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Ard Biesheuvel <ardb@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/SAMSUNG EXYNOS ARM ARCHITECTURES" 
        <linux-samsung-soc@...r.kernel.org>, patches@...nsource.cirrus.com
Subject: Re: [PATCH 00/12] ARM: ARMv5 multiplatform conversions

On Thu, Apr 7, 2022 at 9:07 AM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 05/04/2022 11:17, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@...db.de>
> >
> > I revisited some patches from a few years back, to see what
> > is needed forsome of the remaining platforms to become part of
> > CONFIG_ARCH_MULTIPLATFORM.
> >
> > A few things happened since I last looked at this, which helps to make
> > this easier:
> >
> >  - The ixp4xx platform saw a large scale cleanup
> >
> >  - The ep93xx platform lost support for MaverickCrunch FPUs and
> >    gained support for the common clock subsystem
> >
> >  - The OMAP1 platform has a proposed patch for the common
> >    clock subsystem.
> >
> >  - The generic IRQ entry code is now used everywhere, including
> >    on IOP32x.
> >
> >  - The s3c24xx platform is scheduled for removal next year
>
> Discussion [1] actually did not end with conclusion, but through all the
> time there were no other votes for the platform to stay.

Ok, thanks for the clarification, I misremembered the outcome
of the discussion. I've updated the reference in the mach/io.h
to no longer refer to that, but I still think it's safe to break
readw/writew on BAST ISA devices.

If we finish the multiplatform conversion for all ARMv5, I care
less about dropping s3c24xx entirely as an intermediate step,
but I definitely still like to see any board files and SoCs dropped
that have no users and are just a maintenance burden.

> I will resend my above [1] patch to mention the coming removal.

Ok, thanks!

          Arnd