On Friday 06 March 2015 23:40:34 Pavel Machek wrote: > On Sat 2015-03-07 00:12:07, Grazvydas Ignotas wrote: > > On Fri, Mar 6, 2015 at 11:57 PM, Pali Rohár > > <pali.rohar@xxxxxxxxx> wrote: > > > On Friday 06 March 2015 22:24:17 Pavel Machek wrote: > > >> Hi! > > >> > > >> According to n900 dts, twl4030-bci (aka charger) should > > >> be included. > > > > > > AFAIK it is not present on n900... > > > > Right, it uses twl5030 variant without the charger, charging > > on n900 is provided by separate chip and for a good reason > > as twl's charger is not that good. Forcing the driver to > > load just ends up with it accessing non-existent registers > > over i2c. > > Ok, but: > > 1) Why is the twl4030-bci enabled in n900's dts, then > maybe it is bug in n900 dts... Grazvydas, is there some runtime check if twl4030/twl5030 chip has charger or not? or do we need to explicitly disable device twl4030-bci in DT? > and > > 2) When it is enabled, why it does not load? > > (I guess there's no way to get to input voltage on n900...?) > > Pavel you can read voltage only from rx51_battery.ko (TWL ADC) or bq27x00_battery.ko look for Nokia_N900_RX-51_Schematics.pdf file where you can find information what is connected to ADC and bq27200 chip. -- Pali Rohár pali.rohar@xxxxxxxxx
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