From patchwork Wed Sep 18 22:57:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Konrad Dybcio X-Patchwork-Id: 829442 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 3E53B1CB515; Wed, 18 Sep 2024 22:57:57 +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=1726700278; cv=none; b=FR0x5hthvlNYVVDS/IGOUBKMFAacZXgJ68w9IeCkrOAqt+ImQ0EIXgAWvavSX9hyiiyqfRY0BqI5/ERvzDwvfXezsL6UAxyAjb6oLhBgUk50tVyL0ALlxevktEGk3LCWkrA4iK/z3IlZP7rVvHDJ9gMupoA4/O/dnV0txAQxzL8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726700278; c=relaxed/simple; bh=9Xbdr1pTl7lYm6kqYHAJ7Pr5h+ltrNyYvsLJzKXgVnM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=h2B2hYkWGfAsMj7EA6RvFpOolKXBp45f9fixatDaYsglR/SyeAp4MEI8iyRavpvZxk3qvIeLAbpxidcheTvVJoJbDnn0hr/a1FdBTy29iN1eJ4lfMUqlfVSkk2R1c3OgAH89MnuoJtx/FEdQe0rzOtkiQTJX93gInFdYyFwSKw0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=no1i+sPF; 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="no1i+sPF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA1DBC4CEC2; Wed, 18 Sep 2024 22:57:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726700277; bh=9Xbdr1pTl7lYm6kqYHAJ7Pr5h+ltrNyYvsLJzKXgVnM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=no1i+sPFDWzZuHZsFi0rWmfwoc5a8IUh4Jia8nY7EgVF+Np5lmcgeuMcf0M/JZIaS wpchAEbUvJgHQKDXRAL78AV9E61Cu7Lko2Xr014dASRoUT8VVFSE4uXxGiuiAfFqZL DOprQO/9IaJNs9F6MvJNJkvgcnWcwnGeCzJhH0C1DpWTnmsPk7jy1A+qE9VEChj0jP b2AXbpDu8Ai6p2V+BeJoamns4PCP6EmI9OTrqFJWVSS3EYr9B+zWRRCMxMvdUB56/r JJaNcOipOUw9dMveSRUDwXEhaTHYPS0yPT96DE+CE2MOABrgjIn3n5wbRlWc0HocAU yPLjAsTS3nuhA== From: Konrad Dybcio Date: Thu, 19 Sep 2024 00:57:15 +0200 Subject: [PATCH RFC 02/11] arm64: dts: qcom: sc7180: Affirm IDR0.CCTW on apps_smmu Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240919-topic-apps_smmu_coherent-v1-2-5b3a8662403d@quicinc.com> References: <20240919-topic-apps_smmu_coherent-v1-0-5b3a8662403d@quicinc.com> In-Reply-To: <20240919-topic-apps_smmu_coherent-v1-0-5b3a8662403d@quicinc.com> To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , cros-qcom-dts-watchers@chromium.org Cc: Marijn Suijten , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Konrad Dybcio X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1726700267; l=999; i=quic_kdybcio@quicinc.com; s=20230215; h=from:subject:message-id; bh=TocsrPaJ8I1VAyg6H1MUXOkr4BtJGYiVHFeGO5oxys4=; b=GD2PXDTF6K9gyC92vamg0mELPyevvegAlpXgPdzvUxMVJ4d8VF2VfwRwyR3SXK4jSiNNGBMVk kJHbwk+Tt4IDckyA6jc7I8c8IrvvMCpfeRb7YmQliMJWRARIWWSNmGJ X-Developer-Key: i=quic_kdybcio@quicinc.com; a=ed25519; pk=iclgkYvtl2w05SSXO5EjjSYlhFKsJ+5OSZBjOkQuEms= From: Konrad Dybcio On RPMh-based SoCs, the APPS SMMU advertizes support for cache-coherent pagetable walk via the IDR0 register. This however is not respected by the arm-smmu driver unless dma-coherent is set. Mark the node as dma-coherent to ensure this (and other) implementations take this coherency into account. Signed-off-by: Konrad Dybcio Tested-by: Douglas Anderson --- arch/arm64/boot/dts/qcom/sc7180.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi index b5ebf89803251203a8d38f6a4690aa052a9e8e61..ed258b4ab486af1765b882164962c56935210898 100644 --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi @@ -3625,6 +3625,7 @@ apps_smmu: iommu@15000000 { , , ; + dma-coherent; }; intc: interrupt-controller@17a00000 {