Hello, On Sunday 01 February 2015 10:47:02 Pavel Machek wrote: > Hi! > > I connected N900 with full battery using USB. For some reason, > charge limit was set to 100mA, battery was "full" and was > discharging: > Make sure you have loaded some usb gadget. Without it battery charging via dedicated wallcharger (and probably also usb host charger) does not working. g_nokia should be OK. Try also compiling kernel with CONFIG_USB_GADGET_VBUS_DRAW=500 Also for charger autodetection you need to have loaded isp1704_charer.ko module (or compiled into kernel). And make sure that isp1704_charger is loaded before module bq2415x_charger (there is some probe defer, no idea if it works as excepted). > root@n900:/my/tui/ofone# ./tefone > Ready. > Battery 4.017 V 4.039 V 81 % 0 % 0 / 0 / 2056 mAh Full > -242.224 / 550 / 100 mA > > I adjusted the current limit, but got no change, battery is > still discharging, fast: > > root@n900:/my/tui/ofone# echo 500 > > /sys/class/power_supply/bq24150a-0/current_limit You can try to write "host" to sysfs entry "mode". Another value is "dedicated" for wallchargers. > root@n900:/my/tui/ofone# ./tefone > Ready. > Battery 3.994 V 4.034 V 78 % 0 % 0 / 0 / 2056 mAh Full > -251.506 / 550 / 500 mA Battery 4.0 V 4.037 V 79 % 0 % > 0 / 0 / 2056 mAh Full -223.125 / 550 / 500 mA Battery > 4.005 V 4.037 V 79 % 0 % 0 / 0 / 2056 mAh Full -224.91 > / 550 / 500 mA Battery 3.994 V 4.037 V 78 % 0 % 0 / 0 / > 2056 mAh Full -224.91 / 550 / 500 mA Battery 4.023 V > 4.037 V 81 % 0 % 0 / 0 / 2056 mAh Full -224.91 / 550 / > 500 mA Battery 4.011 V 4.037 V 80 % 0 % 0 / 0 / 2056 > mAh Full -224.91 / 550 / 500 mA Battery 3.994 V 4.031 V > 78 % 0 % 0 / 0 / 2056 mAh Full -256.504 / 550 / 500 mA > Battery 3.994 V 4.029 V 78 % 0 % 0 / 0 / 2056 mAh Full > -224.017 / 550 / 500 mA Battery 3.988 V 4.029 V 77 % 0 > % 0 / 0 / 2056 mAh Full -224.731 / 550 / 500 mA Battery > 4.005 V 4.023 V 79 % 0 % 0 / 0 / 2056 mAh Full -223.66 > / 550 / 500 mA > > I'm getting a lot of > > [ 208.037719] bq27x00-battery 2-0055: battery is not > calibrated! ignoring capacity values [ 238.038024] > bq27x00-battery 2-0055: battery is not calibrated! ignoring > capacity values > Message is print every time when somebody try to read those properties. I think that printing it only one time should be enough. Change to WARN_ONCE? Also design capacity from bq27x00_battery is incorrect (2056) on all N900 devices. It comes from some EEPROM memory stored in N900 and without HW hacking it is not possible to rewrite. I would suggest to add support for bq27x00_battery module to do not report design capacity. Maybe in N900 DT file can be property which tell driver to ignore it. > messages, that's why all the 0s in battery information dump. > > Any ideas? > > Thanks, > Pavel -- Pali Rohár pali.rohar@xxxxxxxxx
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