diff options
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt')
-rw-r--r-- | kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt index 06760503a..718074501 100644 --- a/kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt +++ b/kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt @@ -43,6 +43,12 @@ conditions. ** System MMU optional properties: +- dma-coherent : Present if page table walks made by the SMMU are + cache coherent with the CPU. + + NOTE: this only applies to the SMMU itself, not + masters connected upstream of the SMMU. + - calxeda,smmu-secure-config-access : Enable proper handling of buggy implementations that always use secure access to SMMU configuration registers. In this case non-secure |