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| author | Peter Chen <peter.chen@nxp.com> | 2016-06-07 12:39:25 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-06-16 04:01:38 +0300 |
| commit | 74332d75763e2d2b875fa84b7b98794cb1f74868 (patch) | |
| tree | 90f6439405cce173b5253e057e2e36916695f02b /arch/arm/boot/dts/imx6qdl.dtsi | |
| parent | 67c29a81c2cf06f290ac81d73fdd887ef3c3b971 (diff) | |
| download | linux-74332d75763e2d2b875fa84b7b98794cb1f74868.tar.xz | |
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>
Diffstat (limited to 'arch/arm/boot/dts/imx6qdl.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/imx6qdl.dtsi | 1 |
1 files changed, 1 insertions, 0 deletions
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 { |