openwrtv3/target/linux/mvebu/patches-4.14/230-armada-xp-linksys-mamba-broken-idle.patch

--- 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;
+};
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> 2018-03-19 20:58:12 +00:00			`--- 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;`
			`+};`