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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 84F03C9830E for ; Thu, 24 Sep 2026 14:42:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=30DeOh+RnQi89KzPRmHL/URm5M418Bb8r3J5IBl0ccI=; b=fSRMUYPkCJ2y14vBrSv6fn2Z81 ZU7TRbtEbxev6eXRH1Awyx7oc9Evu9iJJIDfm3ZOnhiWSerpxHuYR34MMFoystzqNb7vsYopLu1r4 qXEKS/KPPtSQYWZoCD+T7BTX6EYmyPzw1F3rNaHi1BF0VZKuLYWryaI1L71vf46Vq7pSMfw3q+u/q iChSpLJZ6/burBBdMr0LLcyPo58mQE4CncbEnI0jjIycyb9C5C7ki3djcvbb2FcZAjjmb4lOkpyAR 2FwgC4nQs5qdxLg1vW7oBMHA9uFGP71GtvxZKx/+UOSjz+/xeyHQkvD7mjPpheAyrxA52zpk4300V 69xtyIRA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x9ke1-0000000BI8a-27sR; Thu, 24 Sep 2026 14:41:53 +0000 Received: from sea.source.kernel.org ([172.234.252.31]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x9ke0-0000000BI8O-1H5p for linux-arm-kernel@lists.infradead.org; Thu, 24 Sep 2026 14:41:52 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id B549340A8A; Thu, 24 Sep 2026 14:41:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6565B1F000FF; Thu, 24 Sep 2026 14:41:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790260911; bh=30DeOh+RnQi89KzPRmHL/URm5M418Bb8r3J5IBl0ccI=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=OW6HS8oq/AQEtS9bWj0ywrQlOIUwBmu9ekGyt/JPgBWsXHjad3uvtFWd7otpv8+xe XjMDc9xNMMduBEWnEzvt0SHEPH+KYstaZc8wdHb0n5v4y7MEJw8aETEANnCr36gwT4 da82wBykF2k54yu0q7YmKOxz18QudTT8oSd68oA+37Z6wDdkNRSX6xs/5UC/ox31fq AxZQybVBkEDFMP1XHBEbnFkqBUgCgt13LThBF3IL6nVnS1HlZpGl7xYz8cXb7rbguL hjVIUm/eoMbla2Lk9CuLA0jNcQtPQFOzF1bXliHXATIHJvVJjf3sdyDr/FiYSHD9FZ 6HBMmHa+4n50g== Date: Thu, 24 Sep 2026 09:41:49 -0500 From: "Rob Herring (Arm)" To: Peter Griffin Cc: "Joerg Roedel (AMD)" , Pranjal Shrivastava , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, Robin Murphy , Mostafa Saleh , Daniel Mentz , linux-kernel@vger.kernel.org, willmcvicker@google.com, tudor.ambarus@linaro.org, Conor Dooley , iommu@lists.linux.dev, kernel-team@android.com, andre.draszik@linaro.org, Krzysztof Kozlowski , Will Deacon , jyescas@google.com Subject: Re: [PATCH v2 1/2] dt-bindings: iommu: arm,smmu-v3: Add arm,instdata-override property Message-ID: <179026090862.4166237.2751536786551835786.robh@kernel.org> References: <20260911-arm-smmu-v3-instcfg-override-v2-0-5804e4f400b5@linaro.org> <20260911-arm-smmu-v3-instcfg-override-v2-1-5804e4f400b5@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260911-arm-smmu-v3-instcfg-override-v2-1-5804e4f400b5@linaro.org> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 11 Sep 2026 21:21:05 +0000, Peter Griffin wrote: > arm,instdata-override DT property is intended to be used for SMMUs that > have a silicon integration issue with the AxPROT[2] signal always being 1 > making all transactions appear as instructions. > > Google Tensor G5 (Laguna) is an example of an SoC with this silicon > erratum. The DT property can be specified to enable a software > workaround which overrides the incoming attribute to data. > > Signed-off-by: Peter Griffin > --- > --- > Documentation/devicetree/bindings/iommu/arm,smmu-v3.yaml | 10 ++++++++++ > 1 file changed, 10 insertions(+) > Reviewed-by: Rob Herring (Arm)