Commit 41a508ed authored Apr 13, 2017 by Charan Teja Reddy Committed by Gerrit - the friendly Code Review server Nov 29, 2019

arm: make default iova alignment as 2mb



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>

parent c6a14aa9

arch/arm/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -133,7 +133,7 @@ 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