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Fri, 1 Mar 2024 14:00:10 -0800 Date: Fri, 1 Mar 2024 14:00:08 -0800 From: Nicolin Chen To: , , , CC: Subject: IOMMU_FWSPEC_PCI_RC_ATS for SMMUv3 with DT configuration? 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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: , 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 all. Currently, the SMMUv3 driver relies on IOMMU_FWSPEC_PCI_RC_ATS in arm_smmu_ats_supported(). This flag seems to be only set in the drivers/acpi/arm64/iort.c file, which does not work for DT configuration. We have a need to enable ATS on a system using Device Tree. Is there a suggested way or name of DT binding to add? Thanks Nicolin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel