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power: supply: lego_ev3_battery: fix Vce offset

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This fixes the value that accounts for the Vce of a transistor in the
LEGO MINDSTORMS EV3 power supply driver. The old value (200mV) was the
max value from the data sheet. After testing, the actual value has been
found to be 50mV. By using 50mV we get a more accurate voltage
indication.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This commit is contained in:
David Lechner 2018-07-20 15:19:44 -05:00 committed by Sebastian Reichel
parent 6e92cecb1e
commit 9c7272412b
1 changed files with 1 additions and 1 deletions
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drivers/power/supply/lego_ev3_battery.c
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@ -52,7 +52,7 @@ static int lego_ev3_battery_get_property(struct power_supply *psy,
return ret;
val->intval *= 2000;
val->intval += 200000;
val->intval += 50000;
/* plus adjust for shunt resistor drop */
ret = iio_read_channel_processed(batt->iio_i, &val2);