Re: [PATCH 14/15] twl4030_charger: Increase current carefully while watching voltage.

2015-03-04 Thread NeilBrown
On Mon, 2 Mar 2015 22:29:45 +0100 Pavel Machek pa...@ucw.cz wrote: On Tue 2015-02-24 15:33:53, NeilBrown wrote: The USB Battery Charging spec (BC1.2) suggests a dedicated charging port can deliver from 0.5 to 5.0A at between 4.75 and 5.25 volts. To choose the correct current voltage

Re: [PATCH 14/15] twl4030_charger: Increase current carefully while watching voltage.

2015-03-02 Thread Pavel Machek
On Tue 2015-02-24 15:33:53, NeilBrown wrote: The USB Battery Charging spec (BC1.2) suggests a dedicated charging port can deliver from 0.5 to 5.0A at between 4.75 and 5.25 volts. To choose the correct current voltage setting requires a trial and error approach: try to draw current and see

[PATCH 14/15] twl4030_charger: Increase current carefully while watching voltage.

2015-02-24 Thread NeilBrown
The USB Battery Charging spec (BC1.2) suggests a dedicated charging port can deliver from 0.5 to 5.0A at between 4.75 and 5.25 volts. To choose the correct current voltage setting requires a trial and error approach: try to draw current and see if the voltage drops too low. Even with a configure