From: Rob Herring <robh@kernel.org>
To: Thierry Reding <thierry.reding@gmail.com>
Cc: Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org,
Jon Hunter <jonathanh@nvidia.com>,
linux-tegra@vger.kernel.org, devicetree@vger.kernel.org,
Will Deacon <will@kernel.org>
Subject: Re: [PATCH v2 1/4] dt-bindings: arm-smmu: Document nvidia,memory-controller property
Date: Wed, 15 Dec 2021 13:16:23 -0600 [thread overview]
Message-ID: <Ybo/B1cjP4pumACW@robh.at.kernel.org> (raw)
In-Reply-To: <20211209163600.609613-1-thierry.reding@gmail.com>
On Thu, 09 Dec 2021 17:35:57 +0100, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
>
> On NVIDIA SoC's the ARM SMMU needs to interact with the memory
> controller in order to map memory clients to the corresponding stream
> IDs. Document how the nvidia,memory-controller property can be used to
> achieve this.
>
> Note that this is a backwards-incompatible change that is, however,
> necessary to ensure correctness. Without the new property, most of the
> devices would still work but it is not guaranteed that all will.
>
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
> Changes in v2:
> - clarify why the new nvidia,memory-controller property is required
>
> .../devicetree/bindings/iommu/arm,smmu.yaml | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2021-12-15 19:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-09 16:35 [PATCH v2 1/4] dt-bindings: arm-smmu: Document nvidia,memory-controller property Thierry Reding
2021-12-09 16:35 ` [PATCH v2 2/4] dt-bindings: arm-smmu: Add compatible for Tegra234 SOC Thierry Reding
2021-12-09 16:35 ` [PATCH v2 3/4] iommu/arm-smmu: Support Tegra234 SMMU Thierry Reding
2021-12-13 18:18 ` Will Deacon
2021-12-09 16:36 ` [PATCH v2 4/4] arm64: tegra: Add Tegra234 IOMMUs Thierry Reding
2021-12-15 19:16 ` Rob Herring [this message]
2022-02-16 13:25 ` [PATCH v2 1/4] dt-bindings: arm-smmu: Document nvidia,memory-controller property Thierry Reding
2022-03-08 15:59 ` Thierry Reding
2022-03-09 12:43 ` Will Deacon
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