From: Valentine <valentine.barshak@cogentembedded.com>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH RFC 0/2] ARM: shmobile: lager: Enable DMA bounce for PCI
Date: Wed, 29 Jan 2014 09:38:29 +0000 [thread overview]
Message-ID: <52E8CC15.5080105@cogentembedded.com> (raw)
In-Reply-To: <1390935213-12896-1-git-send-email-valentine.barshak@cogentembedded.com>
On 01/29/2014 10:45 AM, Simon Horman wrote:
> On Tue, Jan 28, 2014 at 10:53:31PM +0400, Valentine Barshak wrote:
>> This enables DMA bounce for PCI since the controller does
>> not support more than 2G PCI-AHB memory window.
>> The problems with DMA transfers can be observed when
>> setting 2G/2G user/kernel memory split model
>> (CONFIG_VMSPLIT_2G=y)
>> These patches help to avoid it.
>
> Are these patches compatible with other user/kernel splits?
>
Yes, they are.
>>
>> The patches should be applied on top of the
>> "[PATCH V3 0/3] ARM: shmobile: lager: Add USB support" series at
>> http://marc.info/?l=linux-sh&m\x139060253506760&w=2
>>
>> Valentine Barshak (2):
>> ARM: shmobile: lager: Use DMA bounce for PCI devices
>> ARM: shmobile: lager: Increase the size of ARM corehent DMA pool
>>
>> arch/arm/boot/dts/r8a7790-lager.dts | 2 +-
>> arch/arm/mach-shmobile/Kconfig | 2 ++
>> arch/arm/mach-shmobile/board-lager.c | 38 ++++++++++++++++++++++++++++++++++++
>> 3 files changed, 41 insertions(+), 1 deletion(-)
>>
>> --
>> 1.8.3.1
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-sh" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
next prev parent reply other threads:[~2014-01-29 9:38 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 18:53 [PATCH RFC 0/2] ARM: shmobile: lager: Enable DMA bounce for PCI Valentine Barshak
2014-01-29 6:45 ` Simon Horman
2014-01-29 8:03 ` Ben Dooks
2014-01-29 9:38 ` Valentine [this message]
2014-01-29 11:15 ` Valentine
2014-01-29 12:45 ` Ben Dooks
2014-01-29 12:47 ` Valentine
2014-01-29 16:03 ` Ben Dooks
2014-01-29 16:37 ` Valentine
2014-01-29 16:57 ` Ben Dooks
2014-01-29 17:05 ` Valentine
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