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(parent: 67c29a8) | patch
ARM: dts: imx6qdl.dtsi: add "arm,shared-override" for pl310
authorPeter Chen <peter.chen@nxp.com>
Tue, 7 Jun 2016 09:39:25 +0000 (17:39 +0800)
committerShawn Guo <shawnguo@kernel.org>
Thu, 16 Jun 2016 01:01:38 +0000 (09:01 +0800)
commit74332d75763e2d2b875fa84b7b98794cb1f74868
tree90f6439405cce173b5253e057e2e36916695f02btree | snapshot
parent67c29a81c2cf06f290ac81d73fdd887ef3c3b971commit | diff
ARM: dts: imx6qdl.dtsi: add "arm,shared-override" for pl310

The imx6 SMP system has the same DMA memory coherency issue [1] with
pl310 L2 controller. With this shared override bit set, the customer
reports the DMA coherency issue is gone. Besides, I have tested
the performance using USB ethernet with/without this bit, it shows
no difference.

[1] http://patchwork.ozlabs.org/patch/469362/

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
arch/arm/boot/dts/imx6qdl.dtsi diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git