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@xxxxxxxxxx>
---
Cc: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Cc: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Cc: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
---
.../devicetree/bindings/iommu/arm,smmu.yaml | 28 +++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index 895ec8418465..0d88395e43ad 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -367,6 +367,34 @@ 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:
--
2.34.1
