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dt-bindings: Document child nodes for iommu-debug-test devices

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The child nodes describe a test configuration.

Change-Id: I04b829f6a8f2a1495a0156c37fc29ba961238ed1
This commit is contained in:
Patrick Daly 2020-07-10 16:31:24 -07:00
commit ad214af3c7
1 changed files with 14 additions and 9 deletions
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23
bindings/iommu/iommu-debug-test.yaml
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@ -18,14 +18,16 @@ properties:
items:
- const: iommu-debug-test
iommus:
minItems: 1
items:
- description: IOMMU specifier with a SID and an SMR mask
description:
The SID in the IOMMU specifier is a placeholder so that the SMMU driver
can recognize the node. Our test uses ATOS, which doesn't use SIDs anyway,
so using a dummy value is ok.
child nodes:
compatible: : iommu-debug-usecase
iommus:
minItems: 1
items:
- description: IOMMU specifier with a SID and an SMR mask
description:
The SID in the IOMMU specifier is a placeholder so that the SMMU driver
can recognize the node. Our test uses ATOS, which doesn't use SIDs anyway,
so using a dummy value is ok.
required:
- compatible
@ -35,5 +37,8 @@ examples:
- |
iommu_test_device {
compatible = "iommu-debug-test";
iommus = <&cpp_fd_smmu 42>;
basic_usecase {
compatible = "iommu-debug-usecase";
iommus = <&cpp_fd_smmu 42>;
}
};