[Letux-kernel] Power consumption can be better estimated now

H. Nikolaus Schaller hns at goldelico.com
Fri Sep 1 10:16:50 CEST 2017


Hi,
with the new fuel gauge driver which sets the
correct battery capacity we IMHO get more
reliable current measurements from

/sys/class/power_supply/bq27421-0

Here is the 2GB Pyra in idle with 250 MHz

current: -644000uA

And here after turning off display and keyboard
backlight:

current: -483000uA

And the measure-suspend script also works now.

average 124137 uA over 29 seconds
average 108361 uA over 299 seconds

Well, we know that we do not shut down everything
during suspend.

BR,
Nikolaus



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