From: Daniel González Cabanelas <dgcbueu@gmail.com>
Date: Fri, 13 Nov 2020 19:22:51 +0000 (+0100)
Subject: mvebu: LS421DE: fix low performance issue
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=3064651bf75d3ca08cbfff916a14e8b3c4c246fb;p=openwrt%2Fstaging%2Fnbd.git

mvebu: LS421DE: fix low performance issue

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>
---

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 e804665792..2a76649ec4 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
@@ -209,6 +209,10 @@
 	};
 };
 
+&coherencyfab {
+	broken-idle;
+};
+
 &eth1 {
 	pinctrl-0 = <&ge1_rgmii_pins>;
 	pinctrl-names = "default";