From mboxrd@z Thu Jan 1 00:00:00 1970 From: robherring2@gmail.com (Rob Herring) Date: Thu, 21 Mar 2013 13:19:43 -0500 Subject: [PATCH 2/5] arm: mvebu: Select DMA_BOUNCE when LPAE is selected in Kconfig In-Reply-To: <1363883179-1361-3-git-send-email-gregory.clement@free-electrons.com> References: <1363883179-1361-1-git-send-email-gregory.clement@free-electrons.com> <1363883179-1361-3-git-send-email-gregory.clement@free-electrons.com> Message-ID: <514B4F3F.8000308@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 03/21/2013 11:26 AM, Gregory CLEMENT wrote: > From: Lior Amsalem > > For mvebu IOs are 32 bits and we have 40 bits memory due to LPAE so > make sure we give 32 bits addresses to the IOs. > > Signed-off-by: Lior Amsalem > Tested-by: Franklin > Signed-off-by: Gregory CLEMENT > --- > arch/arm/mach-mvebu/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig > index 440b13e..617da94 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 DMABOUNCE if ARM_LPAE This alone is not enough to use bounce buffers. Am I missing something? Rob > > if ARCH_MVEBU > >