Messages in this thread Patch in this message |  | | From | Krzysztof Kozlowski <> | | Subject | [PATCH] dt-bindings: arm-smmu: Constrain clocks for newer Qualcomm variants | | Date | Tue, 5 May 2026 09:14:54 +0200 |
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Many of SMMU on Qualcomm SoCs come in two flavors using same front compatible but a bit different fallback:
1. For application processor, usually without any controllable clocks,
2. For the Adreno GPU, with some controllable clock(s) and using additionally qcom,adreno-smmu fallback compatible.
Add missing constraints for Glymur SMMU on Adreno GPU and several other Qualcomm SMMUs for application processors, to restrict the clocks property to a specific value.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> --- .../devicetree/bindings/iommu/arm,smmu.yaml | 38 ++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml index 06fb5c8e7547..ed0d10157bd6 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -566,7 +566,9 @@ allOf: properties: compatible: items: - - const: qcom,sm8750-smmu-500 + - enum: + - qcom,glymur-smmu-500 + - qcom,sm8750-smmu-500 - const: qcom,adreno-smmu - const: qcom,smmu-500 - const: arm,mmu-500 @@ -595,6 +597,7 @@ allOf: - qcom,sdm845-smmu-500 - qcom,sdx55-smmu-500 - qcom,sdx65-smmu-500 + - qcom,sdx75-smmu-500 - qcom,sm6350-smmu-500 - qcom,sm6375-smmu-500 then: @@ -602,6 +605,39 @@ allOf: clock-names: false clocks: false + # Disallow clocks for all other platforms where specific compatible is used + # with different fallbacks and only one combination has no clocks + - if: + properties: + compatible: + items: + - enum: + - qcom,eliza-smmu-500 + - qcom,glymur-smmu-500 + - qcom,kaanapali-smmu-500 + - qcom,milos-smmu-500 + - qcom,qcs615-smmu-500 + - qcom,qcs8300-smmu-500 + - qcom,sa8775p-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6125-smmu-500 + - qcom,sm6350-smmu-500 + - qcom,sm6375-smmu-500 + - qcom,sm8150-smmu-500 + - qcom,sm8250-smmu-500 + - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + - qcom,sm8550-smmu-500 + - qcom,sm8650-smmu-500 + - qcom,sm8750-smmu-500 + - qcom,x1e80100-smmu-500 + - const: qcom,smmu-500 + - const: arm,mmu-500 + then: + properties: + clock-names: false + clocks: false + - if: properties: compatible: -- 2.51.0
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