Commit 3ad65855 authored by Konrad Dybcio's avatar Konrad Dybcio Committed by Will Deacon
Browse files

dt-bindings: arm-smmu: Document SM61[12]5 GPU SMMU 



Both of these SoCs have a Qualcomm MMU500 implementation of SMMU
in front of their GPUs that expect 3 clocks. Both of them also have
an APPS SMMU that expects no clocks. Remove qcom,sm61[12]5-smmu-500
from the "no clocks" list (intentionally 'breaking' the schema checks
of APPS SMMU, as now it *can* accept clocks - with the current
structure of this file it would have taken a wastefully-long time to
sort this out properly..) and add necessary yaml to describe the
clocks required by the GPU SMMUs.

Signed-off-by: default avatarKonrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230315-topic-kamorta_adrsmmu-v1-1-d1c0dea90bd9@linaro.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 16d16468

Documentation/devicetree/bindings/iommu/arm,smmu.yaml

+26 −2
Original line number Diff line number Diff line
@@ -80,6 +80,8 @@ properties: 
        items:

          - enum:

              - qcom,sc7280-smmu-500

              - qcom,sm6115-smmu-500

              - qcom,sm6125-smmu-500

              - qcom,sm8150-smmu-500

              - qcom,sm8250-smmu-500

              - qcom,sm8350-smmu-500
@@ -376,6 +378,30 @@ allOf: 
            - description: interface clock required to access smmu's registers

                through the TCU's programming interface.



  - if:

      properties:

        compatible:

          items:

            - enum:

                - qcom,sm6115-smmu-500

                - qcom,sm6125-smmu-500

            - const: qcom,adreno-smmu

            - const: qcom,smmu-500

            - const: arm,mmu-500

    then:

      properties:

        clock-names:

          items:

            - const: mem

            - const: hlos

            - const: iface



        clocks:

          items:

            - description: GPU memory bus clock

            - description: Voter clock required for HLOS SMMU access

            - description: Interface clock required for register access



  # Disallow clocks for all other platforms with specific compatibles

  - if:

      properties:
@@ -395,8 +421,6 @@ allOf: 
              - qcom,sdm845-smmu-500

              - qcom,sdx55-smmu-500

              - qcom,sdx65-smmu-500

              - qcom,sm6115-smmu-500

              - qcom,sm6125-smmu-500

              - qcom,sm6350-smmu-500

              - qcom,sm6375-smmu-500

              - qcom,sm8350-smmu-500