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authorAndreas Herrmann <andreas.herrmann@calxeda.com>2014-01-31 00:17:52 +0400
committerWill Deacon <will.deacon@arm.com>2014-02-24 23:09:45 +0400
commit0c9d70d72453036195682e64efce77872e9f268b (patch)
tree3b40b2b895f7d16d458ccfc498416e249118d07e /Documentation/devicetree/bindings/iommu/arm,smmu.txt
parent3a5df8ff35a28bfc0a3662a5906af2c98d4807d8 (diff)
downloadlinux-0c9d70d72453036195682e64efce77872e9f268b.tar.xz
documentation/iommu: update description of ARM System MMU binding
This patch adds descriptions for new properties of the device tree binding for the ARM SMMU architecture. These properties control arm-smmu driver options. Cc: Grant Likely <grant.likely@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com> [will: removed device isolation property, as this has been dropped and fixed up spacing in documentation] Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'Documentation/devicetree/bindings/iommu/arm,smmu.txt')
-rw-r--r--Documentation/devicetree/bindings/iommu/arm,smmu.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index e34c6cdd8ba8..f284b99402bc 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
@@ -48,6 +48,12 @@ conditions.
from the mmu-masters towards memory) node for this
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
+ aliases of secure registers have to be used during
+ SMMU configuration.
+
Example:
smmu {