diff options
| author | Yan Markman <ymarkman@marvell.com> | 2016-10-16 00:22:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-11-08 10:17:17 +0100 |
| commit | 1ac353495acd90072a9e33f38fafb5cf07390593 (patch) | |
| tree | cdb26fd2db7ea6621d2099caf3568b586fc8f623 | |
| parent | 7a598f936b4b748ab1287c5d76ae203153ff5bd6 (diff) | |
ARM: dts: mvebu: pl310-cache disable double-linefill
commit cda80a82ac3e89309706c027ada6ab232be1d640 upstream.
Under heavy system stress mvebu SoC using Cortex A9 sporadically
encountered instability issues.
The "double linefill" feature of L2 cache was identified as causing
dependency between read and write which lead to the deadlock.
Especially, it was the cause of deadlock seen under heavy PCIe traffic,
as this dependency violates PCIE overtaking rule.
Fixes: c8f5a878e554 ("ARM: mvebu: use DT properties to fine-tune the L2 configuration")
Signed-off-by: Yan Markman <ymarkman@marvell.com>
Signed-off-by: Igal Liberman <igall@marvell.com>
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
[gregory.clement@free-electrons.com: reformulate commit log, add Armada
375 and add Fixes tag]
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/arm/boot/dts/armada-375.dtsi | 4 | ||||
| -rw-r--r-- | arch/arm/boot/dts/armada-38x.dtsi | 4 | ||||
| -rw-r--r-- | arch/arm/boot/dts/armada-39x.dtsi | 4 |
3 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/boot/dts/armada-375.dtsi b/arch/arm/boot/dts/armada-375.dtsi index 50c5e8417802..10b99530280a 100644 --- a/arch/arm/boot/dts/armada-375.dtsi +++ b/arch/arm/boot/dts/armada-375.dtsi @@ -178,9 +178,9 @@ reg = <0x8000 0x1000>; cache-unified; cache-level = <2>; - arm,double-linefill-incr = <1>; + arm,double-linefill-incr = <0>; arm,double-linefill-wrap = <0>; - arm,double-linefill = <1>; + arm,double-linefill = <0>; prefetch-data = <1>; }; diff --git a/arch/arm/boot/dts/armada-38x.dtsi b/arch/arm/boot/dts/armada-38x.dtsi index af31f5d6c0e5..c3448622e79e 100644 --- a/arch/arm/boot/dts/armada-38x.dtsi +++ b/arch/arm/boot/dts/armada-38x.dtsi @@ -143,9 +143,9 @@ reg = <0x8000 0x1000>; cache-unified; cache-level = <2>; - arm,double-linefill-incr = <1>; + arm,double-linefill-incr = <0>; arm,double-linefill-wrap = <0>; - arm,double-linefill = <1>; + arm,double-linefill = <0>; prefetch-data = <1>; }; diff --git a/arch/arm/boot/dts/armada-39x.dtsi b/arch/arm/boot/dts/armada-39x.dtsi index 60fbfd5907c7..55d02641d930 100644 --- a/arch/arm/boot/dts/armada-39x.dtsi +++ b/arch/arm/boot/dts/armada-39x.dtsi @@ -111,9 +111,9 @@ reg = <0x8000 0x1000>; cache-unified; cache-level = <2>; - arm,double-linefill-incr = <1>; + arm,double-linefill-incr = <0>; arm,double-linefill-wrap = <0>; - arm,double-linefill = <1>; + arm,double-linefill = <0>; prefetch-data = <1>; }; |