On 2020-11-02 17:14, Jordan Crouse wrote:
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@xxxxxxxxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index 503160a7b9a0..3b63f2ae24db 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -28,8 +28,6 @@ properties:
- enum:
- qcom,msm8996-smmu-v2
- qcom,msm8998-smmu-v2
- - qcom,sc7180-smmu-v2
- - qcom,sdm845-smmu-v2
What about the "Apps SMMU" instances? Those are distinct and don't
have/need the GPU special behaviour, right?
Robin.
- const: qcom,smmu-v2
- description: Qcom SoCs implementing "arm,mmu-500"
@@ -40,6 +38,13 @@ properties:
- qcom,sm8150-smmu-500
- qcom,sm8250-smmu-500
- const: arm,mmu-500
+ - description: Qcom Adreno GPUs implementing "arm,smmu-v2"
+ items:
+ - enum:
+ - qcom,sc7180-smmu-v2
+ - qcom,sdm845-smmu-v2
+ - const: qcom,adreno-smmu
+ - const: qcom,smmu-v2
- description: Marvell SoCs implementing "arm,mmu-500"
items:
- const: marvell,ap806-smmu-500
