From 74332d75763e2d2b875fa84b7b98794cb1f74868 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Tue, 7 Jun 2016 17:39:25 +0800 Subject: [PATCH] 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 Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index b20096f084f9..b620ac884cfd 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -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 { -- 2.20.1