Toasty SoC


#1

HiKey 1/96 dies running a synthetic VP8 VPX Encoding benchmark…

thus…
Message from syslogd@linaro-developer at Mar 16 12:39:13 …
kernel:[ 2031.022487] thermal thermal_zone2: critical temperature reached(90 C),shutting down

yeah, it probably had a malconstructed config file and we may never care about this app but I am going to find a bigger heatsink somewhere and see if I can chase this down. Not sure this is the place to post this info… apologies ATF.


#2

Hi,

You question has delayed very long time but hope you are still using Hikey board. We have enabled thermal management on Hikey with IPA, so when the temperature has increased to over 65’C, it will set constraint for CPU frequency. So it will not trigger reset when you run benchmark.

By default, IPA has been enabled in release. But in some RPB release, it missed to insert kernel module and enable IPA governor for thermal framework, so you need manually enable it by below commands:

test -f /etc/ssh/ssh_host_dsa_key || dpkg-reconfigure openssh-server

modprobe hisi-acpu-cpufreq
echo "power_allocator" > /sys/class/thermal/thermal_zone0/policy

exit0

Also please check this linkage for more detailed discussion:
http://www.96boards.org/forums/topic/hikey-unexpected-shutdown-overheating/#post-16902&gsc.tab=0

Thanks,
Leo Yan