[PATCH 1/1] ARM: dts: imx6qdl.dtsi: add "arm, shared-override" for pl310
From: shawnguo@kernel.org (Shawn Guo)
Date: 2016-06-16 01:02:09
On Tue, Jun 07, 2016 at 05:39:25PM +0800, Peter Chen wrote:
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 <redacted>
Applied, thanks.