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iMX6Q reboot hangs issue

Question asked by carit zhu on Jun 12, 2017
Latest reply on Jun 13, 2017 by carit zhu

I use "fsl-yocto-L4.1.15_2.0.0-ga" BSP of imx6q. However, when I enter reboot command, the debug port shows as the following:

root@imx6qsabresd:~# reboot


The system is going down for reboot NOW! (ttymxc0) (Mon Jun 12 08:15:47 2017)
INIT: Switching to runlevel: 6
INIT: Sending processes the TERM signal
root@imx6qsabresd:~# Stopping XServer
Stopping Dropbear SSH server: stopped /usr/sbin/dropbear (pid 599)
 * Stopping Avahi mDNS/DNS-SD Daemon: avahi-daemon                                                                         [ ok ]
Stopping advanced power management daemon: no /usr/sbin/apmd found; none killed
Stopping atd: OK
Stopping bluetooth
Stopping system message bus: dbus.
stopping mountd: done
stopping nfsd: done
Stopping ntpd: done
Stopping system log daemon...0
Stopping kernel log daemon...0
stopping statd: done
Stopping Connection Manager
Stopping Telephony daemon
ALSA: Storing mixer settings...
/usr/sbin/alsactl: save_state:1595: No soundcards found...
Stopping crond: OK
Stopping rpcbind daemon...
Stopping Linux NFC daemon
Deconfiguring network interfaces... done.
Sending all processes the TERM signal...
Sending all processes the KILL signal...
Unmounting remote filesystems...
Deactivating swap...
Unmounting local filesystems...
EXT4-fs (mmcblk3p2): re-mounted. Opts: (null)
Rebooting... reboot: Restarting system


Then the system hangs and will not reboot at all. Our board is designed based on imx6q sabresd, but without WDOG_B signal connecting to external PMIC. I want to confirm whether it is necessary for the system. BTW we use ldo_enable in our board design.


Thank you everybody!