From: "Peng Fan (OSS)" <peng.fan@oss.nxp.com>
To: Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <joro@8bytes.org>, Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: Joy Zou <joy.zou@nxp.com>,
linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Peng Fan <peng.fan@nxp.com>, Jason Gunthorpe <jgg@ziepe.ca>
Subject: [PATCH RFC 0/2] iommu/arm-smmu-v3: bypass streamid zero on i.MX95
Date: Tue, 15 Oct 2024 11:14:41 +0800 [thread overview]
Message-ID: <20241015-smmuv3-v1-0-e4b9ed1b5501@nxp.com> (raw)
i.MX95 eDMA3 connects to DSU ACP, supporting dma coherent memory to
memory operations. However TBU is in the path between eDMA3 and ACP,
need to bypass the default SID 0 to make eDMA3 work properly.
I was also thinking to introduce "bypass-sids = <0xA 0xB 0xC ...>" to
make this reusable for others, but not sure. I could switch to
"bypass-sids" if you prefer.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
Peng Fan (2):
dt-bindings: iommu: arm,smmu-v3: introduce nxp,imx95-bypass-sid-zero
iommu/arm-smmu-v3: Bypass SID0 for NXP i.MX95
.../devicetree/bindings/iommu/arm,smmu-v3.yaml | 4 ++++
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 19 ++++++++++++++++---
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 1 +
3 files changed, 21 insertions(+), 3 deletions(-)
---
base-commit: d61a00525464bfc5fe92c6ad713350988e492b88
change-id: 20241014-smmuv3-120b24bc4659
Best regards,
--
Peng Fan <peng.fan@nxp.com>
next reply other threads:[~2024-10-15 3:06 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-15 3:14 Peng Fan (OSS) [this message]
2024-10-15 3:14 ` [PATCH RFC 1/2] dt-bindings: iommu: arm,smmu-v3: introduce nxp,imx95-bypass-sid-zero Peng Fan (OSS)
2024-10-15 3:14 ` [PATCH RFC 2/2] iommu/arm-smmu-v3: Bypass SID0 for NXP i.MX95 Peng Fan (OSS)
2024-10-15 8:13 ` Pranjal Shrivastava
2024-10-15 12:47 ` Jason Gunthorpe
2024-10-15 15:00 ` Pranjal Shrivastava
2024-10-15 15:07 ` Pranjal Shrivastava
2024-10-15 15:24 ` Jason Gunthorpe
2024-10-15 15:13 ` Robin Murphy
2024-10-15 15:19 ` Pranjal Shrivastava
2024-10-15 15:31 ` Jason Gunthorpe
2024-10-15 15:37 ` Robin Murphy
2024-10-15 16:10 ` Pranjal Shrivastava
2024-10-16 9:02 ` Peng Fan
2024-10-16 9:12 ` Pranjal Shrivastava
2024-10-15 7:45 ` [PATCH RFC 0/2] iommu/arm-smmu-v3: bypass streamid zero on i.MX95 Pranjal Shrivastava
2024-10-15 14:47 ` Robin Murphy
2024-10-16 0:56 ` Peng Fan
2024-10-16 1:15 ` Nicolin Chen
2024-10-16 8:53 ` Peng Fan
2024-10-16 9:06 ` Pranjal Shrivastava
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