[PATCH] documentation/iommu: Update description of ARM System MMU binding

[Andreas Herrmann]

This patch adds descriptions fore new properties of device tree
binding for the ARM SMMU architecture. These properties control
arm-smmu driver options.

Cc: Grant Likely <grant.likely at linaro.org>
Cc: Will Deacon <will.deacon at arm.com>
Cc: Andreas Herrmann <herrmann.der.user at googlemail.com>
Acked-by: Rob Herring <robh at kernel.org>
Signed-off-by: Andreas Herrmann <andreas.herrmann at calxeda.com>
---
 .../devicetree/bindings/iommu/arm,smmu.txt         |   11 +++++++++++
 1 file changed, 11 insertions(+)

Hi Will,

I should have included this patch in the series as it describes the
options introduced there.


Andreas

diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
index e34c6cd..7ad8ff0 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt
@@ -48,6 +48,16 @@ conditions.
                   from the mmu-masters towards memory) node for this
                   SMMU.
 
+- arm,smmu-isolate-devices : Enable device isolation for all masters
+                   of this SMMU. Ie. each master will be attached to
+                   its own iommu domain.
+
+- 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 {
@@ -67,4 +77,5 @@ Example:
                  */
                 mmu-masters = <&dma0 0xd01d 0xd01e>,
                               <&dma1 0xd11c>;
+                arm,smmu-isolate-devices;
         };
-- 
1.7.9.5