linux-kernel - [PATCH v12 06/13] dt-bindings: arm-smmu: Add compatible string for Adreno GPU SMMU

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Message-Id: <20200810222657.1841322-7-jcrouse@codeaurora.org>
Date:   Mon, 10 Aug 2020 16:26:50 -0600
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     linux-arm-msm@...r.kernel.org
Cc:     Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        iommu@...ts.linux-foundation.org, freedreno@...ts.freedesktop.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Rob Herring <robh@...nel.org>, Joerg Roedel <joro@...tes.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v12 06/13] dt-bindings: arm-smmu: Add compatible string for Adreno GPU SMMU

Every Qcom Adreno GPU has an embedded SMMU for its own use. These
devices depend on unique features such as split pagetables,
different stall/halt requirements and other settings. Identify them
with a compatible string so that they can be identified in the
arm-smmu implementation specific code.

Signed-off-by: Jordan Crouse <jcrouse@...eaurora.org>
Reviewed-by: Rob Herring <robh@...nel.org>
---

 Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index 503160a7b9a0..70996348c1d8 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -49,6 +49,10 @@ properties:
           - enum:
               - nvidia,tegra194-smmu
           - const: nvidia,smmu-500
+      - description: Qcom Adreno GPUs implementing "arm,smmu-v2"
+        items:
+          - const: qcom,adreno-smmu
+          - const: qcom,smmu-v2
       - items:
           - const: arm,mmu-500
           - const: arm,smmu-v2
-- 
2.25.1