From patchwork Sat Apr 11 12:10:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 228069 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19929C2BB85 for ; Sat, 11 Apr 2020 12:19:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E40E420787 for ; Sat, 11 Apr 2020 12:19:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586607599; bh=RBwdeau2UXjuzCvH96Qfxh/rR+Du1Zjk34A0ZOmqfvg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=YEpdboh1MYJqEDipjcWVbSUB7NgjQU7zKW+dpoRtlLA95Z+R5IP5HYFJMqkMy6Wb3 HMe0owjhLE+WGcUgnvY+tYOfonVbJ34kObO68Gfz40lKAq63yV26o71MbLIIv27JDT /tAxJ9FCfySVkz0JOV8jxSG1Ku3LiCFLKjsVBO48= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728883AbgDKMT5 (ORCPT ); Sat, 11 Apr 2020 08:19:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:55548 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728891AbgDKMTy (ORCPT ); Sat, 11 Apr 2020 08:19:54 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A2D282084D; Sat, 11 Apr 2020 12:19:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586607595; bh=RBwdeau2UXjuzCvH96Qfxh/rR+Du1Zjk34A0ZOmqfvg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0UDnRc0q2SObP9ncGW2G3zUeFWcjERk+Xlppk2xHXAU4HVlGDEz0w5xYZJLaxw4Uz QqlJ2qeDUjQukte6o0cyx/lXD22Z9qinQCUvUeSCWM/RFcV2ynyUr78NN2eGVE6Krp 8DNRYe2N63dIkOpk5JJ7tijKHiOI6LkrldsbkM60= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Anson Huang , Shawn Guo , Christian Eggers Subject: [PATCH 5.5 41/44] ARM: imx: Enable ARM_ERRATA_814220 for i.MX6UL and i.MX7D Date: Sat, 11 Apr 2020 14:10:01 +0200 Message-Id: <20200411115500.892167067@linuxfoundation.org> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200411115456.934174282@linuxfoundation.org> References: <20200411115456.934174282@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Anson Huang commit 4562fa4c86c92a2df635fe0697c9e06379738741 upstream. ARM_ERRATA_814220 has below description: The v7 ARM states that all cache and branch predictor maintenance operations that do not specify an address execute, relative to each other, in program order. However, because of this erratum, an L2 set/way cache maintenance operation can overtake an L1 set/way cache maintenance operation. This ERRATA only affected the Cortex-A7 and present in r0p2, r0p3, r0p4, r0p5. i.MX6UL and i.MX7D have Cortex-A7 r0p5 inside, need to enable ARM_ERRATA_814220 for proper workaround. Signed-off-by: Anson Huang Signed-off-by: Shawn Guo Cc: Christian Eggers Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-imx/Kconfig | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/arm/mach-imx/Kconfig +++ b/arch/arm/mach-imx/Kconfig @@ -520,6 +520,7 @@ config SOC_IMX6UL bool "i.MX6 UltraLite support" select PINCTRL_IMX6UL select SOC_IMX6 + select ARM_ERRATA_814220 help This enables support for Freescale i.MX6 UltraLite processor. @@ -556,6 +557,7 @@ config SOC_IMX7D select PINCTRL_IMX7D select SOC_IMX7D_CA7 if ARCH_MULTI_V7 select SOC_IMX7D_CM4 if ARM_SINGLE_ARMV7M + select ARM_ERRATA_814220 help This enables support for Freescale i.MX7 Dual processor.