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Commit 99ff0561 authored by Gregory CLEMENT's avatar Gregory CLEMENT Committed by Jason Cooper
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ARM: mvebu: Limit the DMA zone when LPAE is selected 



When LPAE is activated on Armada XP, all registers and IOs are still
32bit, the 40bit extension is on the CPU to DRAM path (windows) only.
That means that all the DMA transfer are restricted to the low 32 bits
address space. This is limitation is achieved by selecting ZONE_DMA.

Signed-off-by: default avatarGregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 7ad2a783

arch/arm/mach-mvebu/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ config ARCH_MVEBU 
	select MVEBU_CLK_CPU

	select MVEBU_CLK_GATING

	select MVEBU_MBUS

	select ZONE_DMA if ARM_LPAE



if ARCH_MVEBU