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ARM: mvebu: Limit the DMA zone when LPAE is selected
authorGregory CLEMENT <gregory.clement@free-electrons.com>
Mon, 8 Apr 2013 22:52:10 +0000 (00:52 +0200)
committerJason Cooper <jason@lakedaemon.net>
Mon, 15 Apr 2013 14:06:53 +0000 (14:06 +0000)
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: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
arch/arm/mach-mvebu/Kconfig patch | blob | history

diff --cc arch/arm/mach-mvebu/Kconfig
Simple merge
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