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| author | Felix Fietkau <nbd@nbd.name> | 2018-03-19 21:58:12 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2018-03-19 23:28:49 +0100 |
| commit | 5faa9556b1c10a4b21208615bddb7480401fa213 (patch) | |
| tree | 7af9a3e26e9fd5fe1c1e947cb9965f4976dd896f /target/linux/mvebu | |
| parent | e062bd85639d8e85ac8ae0fd90b36d3036c036c4 (diff) | |
| download | mtk-20170518-5faa9556b1c10a4b21208615bddb7480401fa213.zip mtk-20170518-5faa9556b1c10a4b21208615bddb7480401fa213.tar.gz mtk-20170518-5faa9556b1c10a4b21208615bddb7480401fa213.tar.bz2 | |
mvebu: disable cpu idle on WRT1900ACv1
A regression seriously affecting the Linksys WRT1900ACv1 (Mamba) was
introduced some time between the OpenWrt/LEDE v4.4 and v4.9 kernels.
The root cause has not yet been identified, despite many attempts for
more than a year. Disabling the SoC specific CPU idle support should
mitigate this issue.
The symptoms on an affected system are unwanted reboots at a variable
frequency. In many cases almost immediately after boot, causing a
bootloop. This effectively disables support for Mamba on OpenWrt
with kernels > v4.4.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'target/linux/mvebu')
| -rw-r--r-- | target/linux/mvebu/patches-4.14/230-armada-xp-linksys-mamba-broken-idle.patch | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.14/230-armada-xp-linksys-mamba-broken-idle.patch b/target/linux/mvebu/patches-4.14/230-armada-xp-linksys-mamba-broken-idle.patch new file mode 100644 index 0000000..e82a899 --- /dev/null +++ b/target/linux/mvebu/patches-4.14/230-armada-xp-linksys-mamba-broken-idle.patch @@ -0,0 +1,10 @@ +--- a/arch/arm/boot/dts/armada-xp-linksys-mamba.dts ++++ b/arch/arm/boot/dts/armada-xp-linksys-mamba.dts +@@ -563,3 +563,7 @@ + }; + }; + }; ++ ++&coherencyfab { ++ broken-idle; ++}; |