| Message ID | 1365461538-30702-3-git-send-email-gregory.clement@free-electrons.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Apr 09, 2013 at 12:52:10AM +0200, Gregory CLEMENT wrote: > 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> > --- > arch/arm/mach-mvebu/Kconfig | 1 + > 1 file changed, 1 insertion(+) Applied to mvebu/soc thx, Jason.
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig index 440b13e..db1bbc8 100644 --- a/arch/arm/mach-mvebu/Kconfig +++ b/arch/arm/mach-mvebu/Kconfig @@ -13,6 +13,7 @@ config ARCH_MVEBU select MVEBU_CLK_CORE select MVEBU_CLK_CPU select MVEBU_CLK_GATING + select ZONE_DMA if ARM_LPAE if ARCH_MVEBU
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> --- arch/arm/mach-mvebu/Kconfig | 1 + 1 file changed, 1 insertion(+)