From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.154.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E7CC3AA4F9 for ; Thu, 2 Jul 2026 07:39:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.154.123 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782977962; cv=none; b=DKcH+VB6wVxI/GvOMJE+0/j5MA55d8A7JtbCMcgZjE/R5NdtIc1C6AYY6Zr51of+SCw0h5iczbi8G60mkuD6Pa0aVazki/K2oup/pV7IWBPQ4M1M7DlbTjQ+LnseR/g0zliCcORti5kfwTuAUPjXWIBFTGfy39aWqxoJYcSVj78= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782977962; c=relaxed/simple; bh=/hiYXX+Tl9Oi9Ll1odfLmRU1+IL7JIxTnj5Jgck2HxQ=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=s2d6CsHef5LHCXcHGY5qCsndS1exLgFeKw6ghECgd50y3L+63z5I1ODbAmqPflufO+lYvEA++NVlKpuGJh6pSpzxChKfn5vNHa1L6RzdysWQ38Ot2B5+9X9D55pTiUv+y71IaydjWpWTTmodaM3+kpsnSOajQED5HtQ/I76Um1M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=gDtkatht; arc=none smtp.client-ip=68.232.154.123 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="gDtkatht" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1782977958; x=1814513958; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=/hiYXX+Tl9Oi9Ll1odfLmRU1+IL7JIxTnj5Jgck2HxQ=; b=gDtkathtUtotk0gYXF9hjNYulENJbFTMOtJVSrk0ruVlegEJovFVeKGn 8zBO7VqYcD3i4KFrc+L9ghCQ0jX48+qRKGIsjCRvhbe95menaaD1Ke1Mf OnfPh/mOsscPMW3WAyTJC6aq+9MYqA7qWQyoAjws7H9Qz0n8VEH2+w/kE 29gifjI1pi+zW53Mhr7RQnADebWytr5QKU0zD1e1BJKRCL/f/20N5YtUg bMWzIdAZMVV0tyYHLHPduqq+qkqTr/+i5CCGe2Jcn8hY+Z4TXsQb8NupY sICduP1eLoaVDAu8EBu8Z5iATgzAwXQYKQw+ZoyIBnLg+Si+p0F0P4I/q g==; X-CSE-ConnectionGUID: Kzlc3EJsT/a0PYNYbFcCFg== X-CSE-MsgGUID: Q2pi1i4kRfO/I5PSg+70xQ== X-IronPort-AV: E=Sophos;i="6.25,143,1779174000"; d="scan'208";a="60352475" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa2.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 02 Jul 2026 00:39:17 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.58; Thu, 2 Jul 2026 00:39:14 -0700 Received: from [10.171.248.30] (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.58 via Frontend Transport; Thu, 2 Jul 2026 00:39:06 -0700 Message-ID: <54e742dd-aced-40f0-b4be-df160c8cbe3d@microchip.com> Date: Thu, 2 Jul 2026 09:39:05 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 17/19] ARM: mark Cortex-M3/M4/M7 based boards as deprecated To: Arnd Bergmann , , CC: , Arnd Bergmann , Aaro Koskinen , Alexander Sverdlin , Alexandre Belloni , Alexandre Torgue , Andrew Lunn , Ard Biesheuvel , Claudiu Beznea , Daniel Mack , Ethan Nelson-Moore , Frank Li , Gregory Clement , Haojian Zhuang , "Jeremy J. Peper" , Kristoffer Ericson , Krzysztof Kozlowski , Linus Walleij , Mark Brown , Marc Zyngier , Mike Rapoport , Patrice Chotard , Ralph Siemsen , Robert Jarzmik , Russell King , Sascha Hauer , Sebastian Hesselbarth , Stefan Agner , Stefan Wiehler , Tony Lindgren , Vladimir Zapolskiy , Will Deacon References: <20260701212353.2196041-1-arnd@kernel.org> <20260701212353.2196041-18-arnd@kernel.org> From: Nicolas Ferre Content-Language: en-US, fr Organization: microchip In-Reply-To: <20260701212353.2196041-18-arnd@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit On 01/07/2026 at 23:23, Arnd Bergmann wrote: > From: Arnd Bergmann > > The Cortex-M3/M4/M7 cores were designed as a replacement for the earlier > ARM7TDMI and ARM9TDMI microarchitectures used in older microcontrollers. > > At the moment, Linux can run these cores either when they are integrated > into a larger SoC, or as standalone microcontrollers. While there was > a lot of development work going into Cortex-M support from 2011 to 2016, > this largely stopped when it became clear that Zephyr and other RTOS > had taken over that market. To date, the only Cortex-M based based > microcontroller boards supported upstream are reference implementations. > > Schedule these for removal after the next LTS kernel, so if any users > remain that want to update their kernels, they can stay on that > version for a few years before having to maintain the platform support > out of tree. > > Signed-off-by: Arnd Bergmann > --- > arch/arm/Kconfig | 8 ++++++-- > arch/arm/mach-at91/Kconfig | 4 +++- > arch/arm/mach-imx/Kconfig | 4 +++- > arch/arm/mach-stm32/Kconfig | 14 ++++++++------ > 4 files changed, 20 insertions(+), 10 deletions(-) [..] > diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig > index c5ef27e3cd8f..cb0e3ff8e0ca 100644 > --- a/arch/arm/mach-at91/Kconfig > +++ b/arch/arm/mach-at91/Kconfig > @@ -15,13 +15,15 @@ menuconfig ARCH_AT91 > > if ARCH_AT91 > config SOC_SAMV7 > - bool "SAM Cortex-M7 family" if ARM_SINGLE_ARMV7M > + bool "SAM Cortex-M7 family (DEPRECATED)" if ARM_SINGLE_ARMV7M > select COMMON_CLK_AT91 > select PINCTRL_AT91 > help > Select this if you are using an SoC from Microchip's SAME7, SAMS7 or SAMV7 > families. > > + This platform is scheduled for removal in early 2027 Acked-by: Nicolas Ferre > + > config SOC_SAMA5D2 > bool "SAMA5D2 family" > depends on ARCH_MULTI_V7 [..] Thanks, regards, Nicolas