Re: [PATCH v2 2/3] bq2415x_charger: Use power_supply notifier for automode

[Pali RohÃr]

On Monday 25 November 2013 16:18:39 Pavel Machek wrote:
> On Mon 2013-11-25 15:10:00, Pali RohÃr wrote:
> > On Monday 25 November 2013 15:01:27 Pavel Machek wrote:
> > > Where can I get dsme sources?
> > > 
> > > 									Pavel
> > 
> > dsme daemon: https://gitorious.org/community-ssu/dsme
> > dsme thermal plugin:
> > https://gitorious.org/rx51-bme-replacement/dsme-thermalobje
> > ct-surface
> > 
> > dsme thermal plugin is responsible for checking temperature
> > of battery and send it to dsme damon. dsme daemon itself
> > checking temperature limits and do something (e.g reboot
> > device)
> 
> Thanks for links!
> 
> AFAICT.... dsme daemon does some kind of system management,
> not directly controlling charging, right? It does monitor
> system temperature.
> 

Yes.

> Now.. Imagine phone left in car in charger (on sun). Likely
> temperature will reach high values, kernel is charging, dsme
> will reboot the system, but kernel will start charging again,
> dsme will reboot again, ...
> 
> And it is not only high temperatures that are problem for
> li-ion charging; battery should not be fast charged below 5C
> and should not be charged below 0C. (Again, both are likely
> to happen if you leave your phone in car).
> 
> AFAICT, we should simply disable charging below 5C or above
> 45C.
> 
> 									Pavel

Similar patch (as this) can be added to check for temperature 
from specified power supply driver (in timer reset thread). This 
can be easy and will fix this problem.

-- 
Pali RohÃr
pali.rohar@xxxxxxxxx

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