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ARM: dts: imx6qdl.dtsi: add "arm,shared-override" for pl310

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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>
This commit is contained in:
Peter Chen 2016-06-07 17:39:25 +08:00 • committed by Shawn Guo
commit 74332d7576
1 changed files with 1 additions and 0 deletions
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1
arch/arm/boot/dts/imx6qdl.dtsi
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@ -185,6 +185,7 @@
cache-level = <2>;
arm,tag-latency = <4 2 3>;
arm,data-latency = <4 2 3>;
arm,shared-override;
};
pcie: pcie@0x01000000 {