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

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/iommu/arm,smmu.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/iommu/arm,smmu.yaml
Extension
.yaml
Size
23603 bytes
Lines
755
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/iommu/arm,smmu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: ARM System MMU Architecture Implementation

maintainers:
  - Will Deacon <will@kernel.org>
  - Robin Murphy <Robin.Murphy@arm.com>

description: |+
  ARM SoCs may contain an implementation of the ARM System Memory
  Management Unit Architecture, which can be used to provide 1 or 2 stages
  of address translation to bus masters external to the CPU.

  The SMMU may also raise interrupts in response to various fault
  conditions.

properties:
  $nodename:
    pattern: "^iommu@[0-9a-f]*"
  compatible:
    oneOf:
      - description: Qcom SoCs implementing "arm,smmu-v2"
        items:
          - enum:
              - qcom,msm8996-smmu-v2
              - qcom,msm8998-smmu-v2
              - qcom,sdm630-smmu-v2
              - qcom,sm6375-smmu-v2
          - const: qcom,smmu-v2

      - description: Qcom SoCs implementing "qcom,smmu-500" and "arm,mmu-500"
        items:
          - enum:
              - qcom,eliza-smmu-500
              - qcom,glymur-smmu-500
              - qcom,hawi-smmu-500
              - qcom,kaanapali-smmu-500
              - qcom,milos-smmu-500
              - qcom,nord-smmu-500
              - qcom,qcm2290-smmu-500
              - qcom,qcs615-smmu-500
              - qcom,qcs8300-smmu-500
              - qcom,qdu1000-smmu-500
              - qcom,sa8255p-smmu-500
              - qcom,sa8775p-smmu-500
              - qcom,sar2130p-smmu-500
              - qcom,sc7180-smmu-500
              - qcom,sc7280-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,sdx75-smmu-500
              - qcom,shikra-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

Annotation

Implementation Notes