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arm: make default iova alignment as 2mb

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To get the 2MB aligned IOVA section mappings, set
ARM_DMA_IOMMU_ALIGNMENT to 9.

Change-Id: I3254c39e4864c32d6f25a4d416b1b7aec6756ecd
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>
Signed-off-by: Vijayanand Jitta <vjitta@codeaurora.org>
Signed-off-by: Qingqing Zhou <qqzhou@codeaurora.org>
This commit is contained in:
Charan Teja Reddy 2017-04-13 10:52:53 +05:30 • committed by Gerrit - the friendly Code Review server
commit bb7d10aa8e
1 changed files with 1 additions and 1 deletions
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arch/arm/Kconfig
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@ -144,7 +144,7 @@ if ARM_DMA_USE_IOMMU
config ARM_DMA_IOMMU_ALIGNMENT
int "Maximum PAGE_SIZE order of alignment for DMA IOMMU buffers"
range 4 9
default 8
default 9
help
DMA mapping framework by default aligns all buffers to the smallest
PAGE_SIZE order which is greater than or equal to the requested buffer