[PATCH 3/5] documentation/iommu: update description of ARM System MMU binding

[Will Deacon]

From: Andreas Herrmann <andreas.herrmann at calxeda.com>

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 at linaro.org>
Acked-by: Rob Herring <robh at kernel.org>
Signed-off-by: Andreas Herrmann <andreas.herrmann at calxeda.com>
[will: removed device isolation property, as this has been dropped]
Signed-off-by: Will Deacon <will.deacon at arm.com>
---
 Documentation/devicetree/bindings/iommu/arm,smmu.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index e34c6cdd8ba8..d6d2f6dd437a 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 {
-- 
1.8.2.2