From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Thu, 11 Jun 2015 11:51:12 +0000 (+0200)
Subject: ARM: mvebu: use DT properties to fine-tune the L2 configuration
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c8f5a878e55459b78bac273f6492bbc91475beb5;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

ARM: mvebu: use DT properties to fine-tune the L2 configuration

In order to optimize the L2 cache performance, this commit adjusts the
configuration of the L2 on the Cortex-A9 based Marvell EBU processors
(Armada 375, 38x and 39x), using the appropriate DT properties.

We enable double linefill, incr double linefill, data prefetch and
disable double linefill on wrap. This matches the configuration that
was fine tuned in the Marvell BSP.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
---

diff --git a/arch/arm/boot/dts/armada-375.dtsi b/arch/arm/boot/dts/armada-375.dtsi
index 67a0ab0f71e0..e9a381741ce1 100644
--- a/arch/arm/boot/dts/armada-375.dtsi
+++ b/arch/arm/boot/dts/armada-375.dtsi
@@ -176,6 +176,10 @@
 				reg = <0x8000 0x1000>;
 				cache-unified;
 				cache-level = <2>;
+				arm,double-linefill-incr = <1>;
+				arm,double-linefill-wrap = <0>;
+				arm,double-linefill = <1>;
+				prefetch-data = <1>;
 			};
 
 			scu@c000 {
diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi
index 1230bfd01a7e..f9f2347d9995 100644
--- a/arch/arm/boot/dts/armada-38x.dtsi
+++ b/arch/arm/boot/dts/armada-38x.dtsi
@@ -143,6 +143,10 @@
 				reg = <0x8000 0x1000>;
 				cache-unified;
 				cache-level = <2>;
+				arm,double-linefill-incr = <1>;
+				arm,double-linefill-wrap = <0>;
+				arm,double-linefill = <1>;
+				prefetch-data = <1>;
 			};
 
 			scu@c000 {
diff --git a/arch/arm/boot/dts/armada-39x.dtsi b/arch/arm/boot/dts/armada-39x.dtsi
index 619b79043eee..dc6efd386dbc 100644
--- a/arch/arm/boot/dts/armada-39x.dtsi
+++ b/arch/arm/boot/dts/armada-39x.dtsi
@@ -104,6 +104,10 @@
 				reg = <0x8000 0x1000>;
 				cache-unified;
 				cache-level = <2>;
+				arm,double-linefill-incr = <1>;
+				arm,double-linefill-wrap = <0>;
+				arm,double-linefill = <1>;
+				prefetch-data = <1>;
 			};
 
 			scu@c000 {