cant hurt to try enabling it I see nobody uses the battery on the BBx boards ?
On 9/2/2016 7:13 PM, William Hermans wrote: > interestingly: > > *william@beaglebone:~$ cat* > /sys/bus/i2c/drivers/tps65217/0-0024/tps65217-charger/power/runtime_enabled > disabled > > So is it possible to change this to "enabled" ? If so what are the > consequences ? > > On Fri, Sep 2, 2016 at 7:04 PM, William Hermans <[email protected] > <mailto:[email protected]>> wrote: > > So I did some searching on this because I am interested in this as > well. I figured that the PMIC driver in the kernel would or should > be responsible for this if such support existed. So I read through > the source file here: > http://lxr.free-electrons.com/source/drivers/mfd/tps65217.c?v=4.4 > <http://lxr.free-electrons.com/source/drivers/mfd/tps65217.c?v=4.4> > , and came to the conclusion that battery charging was not > "supported". Afterwards I found this: > http://elinux.org/BeagleBone_Power_Management#Battery > <http://elinux.org/BeagleBone_Power_Management#Battery> which > seems to confirm my belief that battery charging is not supported > in the kernel driver. > > Anyway, it seems as though that if someone wants battery charging > to work "flawlessly" they either have to rewrite the kernel module > to support this feature. *OR* I do believe it should be possible > to write a userspace application, or script that communicates with > the tps65217c directly via the i2c bus, where it is connected. To > manually "twiddle" the register bits. > > I would have to experiment with this myself to confirm that > anything I think may be possible. Actually *is* possible. > > On Fri, Sep 2, 2016 at 3:52 PM, William Hermans <[email protected] > <mailto:[email protected]>> wrote: > > Page 41 of the datasheet, looks like registers 3-6. Although I > have not read in details what the function of those registers > are. This should be fixable through custom software, but I'd > have to read in greater detail to understand what must be > done, and what should be checked for before manually setting > the charger bits. Or even if it is even a good idea to do so. > > I'm a bit leery about writing to the actual registers of the > PMIC, but only because I have no hands on with that. > > > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/CALHSORqR-Bk3PVRN3ChAzCeHsCUH9vR0CjWUfav38GaSbOyWUQ%40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CALHSORqR-Bk3PVRN3ChAzCeHsCUH9vR0CjWUfav38GaSbOyWUQ%40mail.gmail.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/746bbdb9-1b3c-1f74-9268-c43693f919ec%40gmail.com. For more options, visit https://groups.google.com/d/optout.
