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From: Nicolin Chen <nicolinc@nvidia.com>
To: <jean-philippe@linaro.org>, <robin.murphy@arm.com>,
	<will@kernel.org>, <lpieralisi@kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Subject: IOMMU_FWSPEC_PCI_RC_ATS for SMMUv3 with DT configuration?
Date: Fri, 1 Mar 2024 14:00:08 -0800	[thread overview]
Message-ID: <ZeJP6CwrZ2FSbTYm@Asurada-Nvidia> (raw)

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

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             reply	other threads:[~2024-03-01 22:00 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-01 22:00 Nicolin Chen [this message]
2024-03-04  9:25 ` IOMMU_FWSPEC_PCI_RC_ATS for SMMUv3 with DT configuration? Jean-Philippe Brucker
2024-03-07  3:53   ` Nicolin Chen
2024-04-25  5:11     ` Nicolin Chen

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