tree 625b33270215c8ac908a8904cdb44d5573f731f3
parent 8513c89300696a68963cc504c21d034c6369e183
author Robin Murphy <robin.murphy@arm.com> 1490958213 +0100
committer Will Deacon <will.deacon@arm.com> 1491491203 +0100

iommu/arm-smmu: Add global SMR masking property

The current SMR masking support using a 2-cell iommu-specifier is
primarily intended to handle individual masters with large and/or
complex Stream ID assignments; it quickly gets a bit clunky in other SMR
use-cases where we just want to consistently mask out the same part of
every Stream ID (e.g. for MMU-500 configurations where the appended TBU
number gets in the way unnecessarily). Let's add a new property to allow
a single global mask value to better fit the latter situation.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Nipun Gupta <nipun.gupta@nxp.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>