From mboxrd@z Thu Jan 1 00:00:00 1970 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=-15.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 DD52FC64E8A for ; Mon, 30 Nov 2020 14:38:11 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 62A5F20684 for ; Mon, 30 Nov 2020 14:38:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ry73WU+h" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 62A5F20684 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References:In-Reply-To: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=AZGsJMWLpj3qV/lcI+4CEU1Zdi66OIJcNd0BX5G37Qc=; b=ry73WU+hNKQ/K9fdmCCeT+1Am f1KoiqMGJVRRcttlyR/6BYS8imXwEFdi+LDbB1FZViVhMiETdhpZBWW/J2ItRVAVztoKUEhg5xSsX jb0IYGi0SdSYSUNuFeosXvmUSJAwEx8OwGYeaz704z2Ivd9p9YL5JDY5Njmj/NojOiSAra/ZSM+Eo V85DLjAcqTa5hNqvDU4XZxcarcD0sF2gS65CXjzsPjgx+ixxUgazL7szwZVEw1M/9As6dtK+n7n/A fbGniYsfoCPzxHM1EgHSFhYPbck8xxqkgT8jr11SOMyps6hIHlc0vW3UdM+tk4nPhAlD23Lstj1gu sRsFX2c8w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjkIa-0007sr-10; Mon, 30 Nov 2020 14:37:04 +0000 Received: from relay10.mail.gandi.net ([217.70.178.230]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kjkIX-0007rm-6z for linux-arm-kernel@lists.infradead.org; Mon, 30 Nov 2020 14:37:02 +0000 Received: from localhost (91-175-115-186.subs.proxad.net [91.175.115.186]) (Authenticated sender: gregory.clement@bootlin.com) by relay10.mail.gandi.net (Postfix) with ESMTPSA id 55CA5240019; Mon, 30 Nov 2020 14:36:58 +0000 (UTC) From: Gregory CLEMENT To: Tomasz Nowicki , will@kernel.org, robin.murphy@arm.com, joro@8bytes.org, robh+dt@kernel.org, hannah@marvell.com Subject: Re: [PATCH 1/1] arm64: dts: marvell: keep SMMU disabled by default for Armada 7040 and 8040 In-Reply-To: <20201105112602.164739-1-tn@semihalf.com> References: <20201105112602.164739-1-tn@semihalf.com> Date: Mon, 30 Nov 2020 15:36:57 +0100 Message-ID: <87tut6j4hi.fsf@BL-laptop> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201130_093701_415966_A6D9CCCB X-CRM114-Status: GOOD ( 15.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, catalin.marinas@arm.com, d.odintsov@traviangames.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, nadavh@marvell.com, iommu@lists.linux-foundation.org, Tomasz Nowicki , mw@semihalf.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, > FW has to configure devices' StreamIDs so that SMMU is able to lookup > context and do proper translation later on. For Armada 7040 & 8040 and > publicly available FW, most of the devices are configured properly, > but some like ap_sdhci0, PCIe, NIC still remain unassigned which > results in SMMU faults about unmatched StreamID (assuming > ARM_SMMU_DISABLE_BYPASS_BY_DEFAUL=y). > > Since there is dependency on custom FW let SMMU be disabled by default. > People who still willing to use SMMU need to enable manually and > use ARM_SMMU_DISABLE_BYPASS_BY_DEFAUL=n (or via kernel command line) > with extra caution. > > Fixes: 83a3545d9c37 ("arm64: dts: marvell: add SMMU support") > Cc: # 5.9+ > Signed-off-by: Tomasz Nowicki Applied on mvebu/dt64 Thanks, Gregory > --- > arch/arm64/boot/dts/marvell/armada-7040.dtsi | 4 ---- > arch/arm64/boot/dts/marvell/armada-8040.dtsi | 4 ---- > 2 files changed, 8 deletions(-) > > diff --git a/arch/arm64/boot/dts/marvell/armada-7040.dtsi b/arch/arm64/boot/dts/marvell/armada-7040.dtsi > index 7a3198cd7a07..2f440711d21d 100644 > --- a/arch/arm64/boot/dts/marvell/armada-7040.dtsi > +++ b/arch/arm64/boot/dts/marvell/armada-7040.dtsi > @@ -15,10 +15,6 @@ / { > "marvell,armada-ap806"; > }; > > -&smmu { > - status = "okay"; > -}; > - > &cp0_pcie0 { > iommu-map = > <0x0 &smmu 0x480 0x20>, > diff --git a/arch/arm64/boot/dts/marvell/armada-8040.dtsi b/arch/arm64/boot/dts/marvell/armada-8040.dtsi > index 79e8ce59baa8..22c2d6ebf381 100644 > --- a/arch/arm64/boot/dts/marvell/armada-8040.dtsi > +++ b/arch/arm64/boot/dts/marvell/armada-8040.dtsi > @@ -15,10 +15,6 @@ / { > "marvell,armada-ap806"; > }; > > -&smmu { > - status = "okay"; > -}; > - > &cp0_pcie0 { > iommu-map = > <0x0 &smmu 0x480 0x20>, > -- > 2.25.1 > -- Gregory Clement, Bootlin Embedded Linux and Kernel engineering http://bootlin.com _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel