From: Valentine Barshak <valentine.barshak@cogentembedded.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH RFC 0/2] ARM: shmobile: lager: Enable DMA bounce for PCI
Date: Tue, 28 Jan 2014 18:53:31 +0000 [thread overview]
Message-ID: <1390935213-12896-1-git-send-email-valentine.barshak@cogentembedded.com> (raw)
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.
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
next reply other threads:[~2014-01-28 18:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-28 18:53 Valentine Barshak [this message]
2014-01-29 6:45 ` [PATCH RFC 0/2] ARM: shmobile: lager: Enable DMA bounce for PCI Simon Horman
2014-01-29 8:03 ` Ben Dooks
2014-01-29 9:38 ` Valentine
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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