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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2015-06-11 13:51:12 +0200
committerGregory CLEMENT <gregory.clement@free-electrons.com>2015-07-09 14:25:28 +0200
commitc8f5a878e55459b78bac273f6492bbc91475beb5 (patch)
tree922d9159d6dcf7fdee7dfe37651f7a30ced01688
parent449e1d649c52a80db73dd313dce92d6e191b801b (diff)
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>
-rw-r--r--arch/arm/boot/dts/armada-375.dtsi4
-rw-r--r--arch/arm/boot/dts/armada-38x.dtsi4
-rw-r--r--arch/arm/boot/dts/armada-39x.dtsi4
3 files changed, 12 insertions, 0 deletions
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 {