[PATCH 06/11] documentation/iommu: Update description of ARM System MMU binding
Andreas Herrmann
andreas.herrmann at calxeda.com
Thu Jan 16 07:44:18 EST 2014
This patch adds descriptions fore new properties of device tree
binding for the ARM SMMU architecture. These properties control
arm-smmu driver options.
Cc: Rob Herring <robherring2 at gmail.com>
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>
Signed-off-by: Andreas Herrmann <andreas.herrmann at calxeda.com>
---
.../devicetree/bindings/iommu/arm,smmu.txt | 11 +++++++++++
1 file changed, 11 insertions(+)
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
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