These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / iommu / arm,smmu.txt

diff --git a/kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/kernel/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index 0676050..7180745 100644 (file)
--- 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