Hello Jonathan and Stanimir, > >> See Documentation/ABI/sysfs-bus-iio > >> Millivolts I think... We copied hwmon where possible. > > > > I'm a bit confused about these units. I searched references of > > iio_read_channel_processed() and found a few. > > > > The iio_hwmon expecting milivolts. On the other side lp8788-charger.c > > registers a get_property method in charger-manager.c, which expects > > microvolts in get_batt_uV(). > It's definitely meant to be millivolts (lifted from hwmon a while back). > See Documentation/ABI/testing/sysfs-bus-iio > > Looks like we have a bug in lp8788-charger - it might be matched with one in > lp8788-adc, but then there will be a bug there... > > Cc'd Milo Kim. 'lp8788-charger' registers not charger-manager but power-supply subsystem. 'lp8788-adc' is the IIO driver. 'lp8788-charger' is the IIO consumer of lp8788-adc. (How to communicate between lp8788-adc and lp8788-charger) 1. Application requests vbatt(battery voltage) by accessing /sys/class/power/ 2. lp8788-charger asks lp8788-adc to get converted vbatt value 3. lp8788-adc get the battery ADC from the device. It returns calculated micro voltage to lp8788-charger. 4. lp8788-charger reports this uV value to the application 5. Application uses uV or converts to mV or V unit. It's up to the app. Please note that battery app accesses not /sys/bus/iio but /sys/class/power/. Best regards, Milo ��.n��������+%������w��{.n�����{��(��)��jg��������ݢj����G�������j:+v���w�m������w�������h�����٥