From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jordan Crouse Subject: [PATCH 2/7] dt-bindings: arm-smmu: Add Adreno GPU variant Date: Tue, 20 Aug 2019 13:06:27 -0600 Message-ID: <1566327992-362-3-git-send-email-jcrouse@codeaurora.org> References: <1566327992-362-1-git-send-email-jcrouse@codeaurora.org> Return-path: In-Reply-To: <1566327992-362-1-git-send-email-jcrouse@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.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 , Mark Rutland , Joerg Roedel List-Id: devicetree@vger.kernel.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 --- 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