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i.MX28EVK charger "breaks" after a few hours

Question asked by Reinhard Meyer on Sep 14, 2011
Latest reply on Apr 25, 2013 by Reinhard Meyer

I connected a Li-Pol battery to the EVK which is mainly working as one would expect: charging, running from battery or external power etc. Only one problem repeatedly persists:

 

After a few hours (can be a day or more) the charger is reported broken.

 

Restarting the system resumes the Charging/Not Charging. One can catch the system either charging or not charging, however the charging is quite often.

root@freescale ~$ uname -a
Linux freescale 2.6.31-855-ge067785 #1 Fri Sep 10 09:22:06 MDT 2010 armv5tejl GNU/Linux

root@freescale ~$ cat /sys/class/power_supply/battery/uevent
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_STATUS=Charging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_VOLTAGE_NOW=3920000
POWER_SUPPLY_CURRENT_NOW=600000
POWER_SUPPLY_TEMP=58
root@freescale ~$ charger------ ddi_bc_gBrokenReason=1

root@freescale ~$ cat /sys/class/power_supply/battery/uevent
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_TYPE=Battery
POWER_SUPPLY_STATUS=Not charging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_HEALTH=Dead
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_VOLTAGE_NOW=3744000
POWER_SUPPLY_CURRENT_NOW=0
POWER_SUPPLY_TEMP=42
root@freescale ~$

 

Can anyone reproduce this behaviour, or has seen it?

 

Reinhard

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