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| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-12-22 12:23:55 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-01-24 14:35:53 +0300 |
| commit | d565d60d3da7f0f390c479c3bc6d5846c061760c (patch) | |
| tree | 82545a7b5b1df41d4531a5d80f7fa51996bde14c /Documentation/devicetree/bindings/iommu | |
| parent | 6dbffe465b7c4807c266d696f9a66fb582f8e6f4 (diff) | |
| download | linux-d565d60d3da7f0f390c479c3bc6d5846c061760c.tar.xz | |
dt-bindings: arm-smmu: disallow clocks when not used
Disallow clocks for variants other than:
1. SMMUs with platform-specific compatibles which list explicit clocks
and clock-names,
2. SMMUs using only generic compatibles, e.g. arm,mmu-500, which have a
variable clocks on different implementations.
This requires such variants with platform-specific compatible, to
explicitly list the clocks or omit them, making the binding more
constraint.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221222092355.74586-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/iommu')
| -rw-r--r-- | Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml index b97181d4a399..426d7c4bba7f 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml @@ -368,6 +368,34 @@ allOf: - description: interface clock required to access smmu's registers through the TCU's programming interface. + # Disallow clocks for all other platforms with specific compatibles + - if: + properties: + compatible: + contains: + enum: + - cavium,smmu-v2 + - marvell,ap806-smmu-500 + - nvidia,smmu-500 + - qcom,qcm2290-smmu-500 + - qcom,qdu1000-smmu-500 + - qcom,sc7180-smmu-500 + - qcom,sc8180x-smmu-500 + - qcom,sc8280xp-smmu-500 + - qcom,sdm670-smmu-500 + - qcom,sdm845-smmu-500 + - qcom,sdx55-smmu-500 + - qcom,sdx65-smmu-500 + - qcom,sm6115-smmu-500 + - qcom,sm6350-smmu-500 + - qcom,sm6375-smmu-500 + - qcom,sm8350-smmu-500 + - qcom,sm8450-smmu-500 + then: + properties: + clock-names: false + clocks: false + - if: properties: compatible: |