From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A430D346A19; Mon, 27 Oct 2025 22:35:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761604523; cv=none; b=CVdERm717GZs924HRc2t3x2jrxiRvuyiTATmBy8IOMtvAHOlRCTZt3+fy+NCdZ+Y6FMNvzhI1OYiPaZFM8UAlKLP47Go4ar1pMrjvOqLkcWM+ZYa766TbLkVvD6blmlj75YnLaR9wLQVBCvanPaCvRPRbsVwFLJMK0P7Tv98FZY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761604523; c=relaxed/simple; bh=LjN8+J0b0M8YXWv7gxcDCXfDlWj7Y9sL4bqhmidZdec=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=nzWA0OABn27Ba2Fvf2vsIFwc/DrHfLacWhSqEA5Fs+h2BqrY3Ukz5JUoHVuz8dgF1kkU4da+yr7rsNTnNZTLgVR74E0sOXSryIBIQo4qhpBv6i56Cex1zVd1A/5barNQZBDoFioFcyzulmVbfCRnSz/NM7ANp10zqTjaHHiyCLU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WpVT63zG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WpVT63zG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8C898C116C6; Mon, 27 Oct 2025 22:35:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761604523; bh=LjN8+J0b0M8YXWv7gxcDCXfDlWj7Y9sL4bqhmidZdec=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WpVT63zGnj+iV6a6XKAgYY/Oom+lgMD1dYJmxvr4YDuEd7Ly7EsVMQJYaZ6aqAD19 rv+3yFpbZ2NjfUt2zSPMV2VbMuB+tJEcAKXzSfp5oK/uiUuOAKRTajjNA5cQ8mJmL5 k8q3m+2qjFi+Y0WgGSJ/UM8UKbgUoiT9FgnjDIr6j92SmNNlpVnTBCJ5M0SPFfAFFS L1uAbeJF5RJxe+ti5vADMOAz/FwcbK78d/tqVg2bp7peUnVkmTijMLEmpGlFKk1MAO bNnhLEh2SsVrBLslp92uvF9tEpB26CBj5T+/LN08Jll/uasTWB+QVZAcmaVRY8uHae PfIPQ68oVaNfw== From: Bjorn Andersson To: Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: dts: qcom: sm8650: set ufs as dma coherent Date: Mon, 27 Oct 2025 17:37:16 -0500 Message-ID: <176160465206.73268.9315499672676137244.b4-ty@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251007-topic-sm8650-upstream-ufs-dma-coherent-v1-1-f3cfeaee04ce@linaro.org> References: <20251007-topic-sm8650-upstream-ufs-dma-coherent-v1-1-f3cfeaee04ce@linaro.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit On Tue, 07 Oct 2025 20:53:44 +0200, Neil Armstrong wrote: > The UFS device is ovbiously dma coherent like the other IOMMU devices > like usb, mmc, ... let's fix this by adding the flag. > > To be sure an extensive test has been performed to be sure it's > safe, as downstream uses this flag for UFS as well. > > As an experiment, I checked how the dma-coherent could impact > the UFS bandwidth, and it happens the max bandwidth on cached > write is slighly highter (up to 10%) while using less cpu time > since cache sync/flush is skipped. > > [...] Applied, thanks! [1/1] arm64: dts: qcom: sm8650: set ufs as dma coherent commit: c2703c90161b45bca5b65f362adbae02ed71fcc1 Best regards, -- Bjorn Andersson