Hi,
We're trying to get a custom 4430 board (aka. nook tablet with OMAP4430
ES2.3 HS TWL6030 ES2.1) working with p-android-omap-3.0 on android jelly
bean. The board works quite well, but we experience random hangs and the
watchdog kicks the board to reboot.
The problem is that kmsg_last doesn't not show any useful information
and the fiq debugger refuses to work when the device is locked up. We
also enabled various kernel lock debugging configs to get more info ...
in vain.
Experimenting with it for a while (removing non-standard drivers like
accel, charger, battery, etc) we found that removing CONFIG_CPU_IDLE or
setting disallow_smp_idle in cpuidle44xx.c seems to cure the random
lockups and make the board work fine (apart from the maybe obvious
consequences that it doesn't go to deep sleep anymore).
Further below a few sample infos from the board.
We'd very much appreciate any further help on how to proceed to find the
root cause and happy to provide any more info from sys, debug or
omapconf tool.
Rgds,
Chris
A dmesg from a normal boot:
https://dl.dropbox.com/u/21820416/CPU_IDLE_CRASH/dmesg.log
Kernel source:
https://github.com/Kuzma30/kernel3NookTablet/tree/jellybean
omapconf --cpuinfo
https://dl.dropbox.com/u/21820416/CPU_IDLE_CRASH/omapconf.cpuinfo
cat /sys/kernel/debug/clock/summary
https://dl.dropbox.com/u/21820416/CPU_IDLE_CRASH/clock.summary
... what else can we provide to track this down?
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