linux-kernel - Re: [RFC] remove support for AVR32 architecture

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Message-ID: <cec3a74c-5409-000a-94f7-d2b7579faff4@microchip.com>
Date:   Thu, 2 Mar 2017 16:55:56 +0100
From:   Nicolas Ferre <nicolas.ferre@...rochip.com>
To:     Hans-Christian Noren Egtvedt <egtvedt@...fundet.no>,
        <linux-kernel@...r.kernel.org>,
        Haavard Skinnemoen <hskinnemoen@...il.com>
CC:     Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [RFC] remove support for AVR32 architecture

Le 01/03/2017 à 21:44, Hans-Christian Noren Egtvedt a écrit :
> Hello all,
> 
> The AVR32 architecture is not keeping up with the development of the kernel,
> and since it shares so much of the drivers with Atmel ARM SoC, it is starting
> to hinder these drivers to develop swiftly.

It will definitively help to remove some of the non-DT code in all our
former-common drivers.

> Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
> Microchip).
> 
> Finally, the GCC toolchain is stuck at version 4.2.x, and has not received
> any patches since the last release from Atmel;
> 4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this toolchain is
> no longer able to properly link the network stack.
> 
> Haavard and I have came to the conclusion that we feel keeping AVR32 on life
> support offers more obstacles for Atmel ARMs, than it gives joy to AVR32
> users. I also suspect there are very few AVR32 users left today, if anybody
> at all.
> 
> I have prepared three patches in my for-linus branch in git tree
> https://git.kernel.org/cgit/linux/kernel/git/egtvedt/linux-avr32.git

Quick look at the patches (file path mostly) seems okay:

Acked-by: Nicolas Ferre <nicolas.ferre@...rochip.com>

And thanks a lot to Haavard and you Hans-Christian for having developed,
more than 10 years ago, and then maintained some of the nice early
drivers that we are still using for our ARM-based platforms!

> Shortlog below, patches not inlined as they are quite large IMHO.
> 
> I will send a formal pull request to Linus unless anybody objects loudly.
> 
> I have also prepare patches for removing AVR32 specific kernel drivers, I
> will send those to the relevant subsystem maintainers.
> 
> Hans-Christian Noren Egtvedt (3):
>       avr32: remove support for AVR32 architecture
>       docs: remove all references to AVR32 architecture
>       scripts: remove AVR32 support from checkstack.pl

Best regards,
-- 
Nicolas Ferre