Evolution-x-devices/kernel_xiaomi_sm8450-devicetrees
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dt-bindings: Add documentation for the "non-coherent" SMMU dt-binding

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Add documentation for the SMMU-V2 "non-coherent" IO page-table
dt-binding attribute.

Change-Id: Ic6a39c388b0e2b45880dae9ac7bd96c9df557b98
This commit is contained in:
Isaac J. Manjarres
2020-04-07 09:51:18 -07:00
parent 12f20880a6
commit 05b371c75b
1 changed files with 3 additions and 0 deletions
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3
bindings/iommu/arm,smmu.txt
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@@ -222,6 +222,9 @@ conditions.
Optional, String.
Enables coherency for the IOMMU device, but not for the Client.
--- "default":
Pagetable coherency defaults to the coherency setting of the
IOMMU device.
--- "non-coherent":
Pagetables are not coherent nor cached in the system cache..
--- "coherent"
Pagetables are io-coherent.