From: Jordan Crouse <jcrouse@codeaurora.org>
To: freedreno@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Joerg Roedel <joro@8bytes.org>
Subject: [PATCH 2/7] dt-bindings: arm-smmu: Add Adreno GPU variant
Date: Tue, 20 Aug 2019 13:06:27 -0600 [thread overview]
Message-ID: <1566327992-362-3-git-send-email-jcrouse@codeaurora.org> (raw)
In-Reply-To: <1566327992-362-1-git-send-email-jcrouse@codeaurora.org>
Add a compatible string to identify SMMUs that are attached
to Adreno GPU devices that wish to support split pagetables.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
Documentation/devicetree/bindings/iommu/arm,smmu.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index 3133f3b..3b07896 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
@@ -18,6 +18,7 @@ conditions.
"arm,mmu-500"
"cavium,smmu-v2"
"qcom,smmu-v2"
+ "qcom,adreno-smmu-v2"
depending on the particular implementation and/or the
version of the architecture implemented.
@@ -31,6 +32,12 @@ conditions.
as below, SoC-specific compatibles:
"qcom,sdm845-smmu-500", "arm,mmu-500"
+ "qcom,adreno-smmu-v2" is a special implementation for
+ SMMU devices attached to the Adreno GPU on Qcom devices.
+ If selected, this will enable split pagetable (TTBR1)
+ support. Only use this if the GPU target is capable of
+ supporting 64 bit addresses.
+
- reg : Base address and size of the SMMU.
- #global-interrupts : The number of global interrupts exposed by the
--
2.7.4
next prev parent reply other threads:[~2019-08-20 19:06 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 19:06 [PATCH 0/7] iommu/arm-smmu: Split pagetable support for Adreno GPUs Jordan Crouse
2019-08-20 19:06 ` [PATCH 1/7] iommu/arm-smmu: Support split pagetables Jordan Crouse
2019-08-20 19:06 ` Jordan Crouse [this message]
2019-08-27 17:13 ` [PATCH 2/7] dt-bindings: arm-smmu: Add Adreno GPU variant Rob Herring
2019-09-17 18:56 ` Stephen Boyd
2019-08-20 19:06 ` [PATCH 3/7] iommu/arm-smmu: Add a SMMU variant for the Adreno GPU Jordan Crouse
2019-09-17 18:55 ` Stephen Boyd
2019-08-20 19:06 ` [PATCH 4/7] iommu: Add DOMAIN_ATTR_SPLIT_TABLES Jordan Crouse
2019-08-20 19:06 ` [PATCH 5/7] iommu/arm-smmu: Support DOMAIN_ATTR_SPLIT_TABLES Jordan Crouse
2019-09-17 17:20 ` Will Deacon
2019-08-20 19:06 ` [PATCH 6/7] drm/msm: Create the msm_mmu object independently from the address space Jordan Crouse
2019-08-20 19:06 ` [PATCH 7/7] drm/msm: Use per-target functions to set up address spaces Jordan Crouse
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