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Cubietruck : battery issues


ccapublic

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Hi All,

 

I did my best to sort the following issues out by searching the web / forum with no success. Please forgive me in advance if topic was already covered.

 

I have a cubietruck running mainline kernel and have installed a LiPo battery.

 

I can get info about the battery by catting  /sys/class/power_supply/axp20x-battery contents. However, some things are weird ;

- capacity reports 0 (but bat is charged)

- voltage_now reports 4.5V (abnormal for a LiPo) while voltage_max says 4.2V (which is normal)

- status says discharging even when on mains

- ssh motd does not show battery status (btw 30-armbian-sysinfo seems to point non existing folders both for mainline_dir and legacy_dir).

 

Any comment whether this is normal or not and if not how to fix it ?

 

Thanks a lot for your support 

 

Cyril

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Hi. That's what I did and battery has really a too high voltage. So it's either a pmu hw issue (I doubt it) or os/sw issue, but I don't know where to start to try to fix it :(

 

Do you really think the risk is real here ?

Thanks 

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Ended up installing i2c-tools and dumping axp209 registers. PMU setup/status as reported by driver match i2c registers... There must be something wrong with the HW as my LiPo IS 4.5-4.8V in spite of correct config... Confused me...

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