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[v2,1/2] mvebu: LS421DE: fix low performance issue

Message ID 2858786.BdmYo5mIEi@tool
State Accepted
Delegated to: Petr Štetiar
Headers show
Series [v2,1/2] mvebu: LS421DE: fix low performance issue | expand

Commit Message

Daniel González Cabanelas Nov. 13, 2020, 7:22 p.m. UTC 
The Buffalo Linkstation LS421DE isn't able to enable the Level 2 cache
(AKA Aurora cache). As of result of this, the throughput is about half of
the expected, e.g when doing network data transfers.

Fix it by adding the broken-idle property in the coherency fabric node.

Signed-off-by: Daniel González Cabanelas <dgcbueu@gmail.com>
---
changes in V2: fixed typo in commit log 

 .../files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts    | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts b/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts
index 4589886190..7e070f49dc 100644
--- a/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts
+++ b/target/linux/mvebu/files/arch/arm/boot/dts/armada-370-buffalo-ls421de.dts
@@ -211,6 +211,10 @@ 
 	};
 };
 
+&coherencyfab {
+	broken-idle;
+};
+
 &eth1 {
 	pinctrl-0 = <&ge1_rgmii_pins>;
 	pinctrl-names = "default";