On Fri, Jun 03, 2016 at 06:59:44PM +0200, Hans de Goede wrote: > The axp20x pmics have 2 power inputs, one called ACIN which is intended > for to be supplied via a powerbarrel on the board and one called VBUS > which is intended to be supplied via an otg connector. > > In the VBUS case the pmic needs to know if the board is supplying power > to the otg connector, because then it should not take any power from > its VBUS pin. The axp209 pmic has a N_VBUSEN input pin via which the > board can signal to the pmic whether the board is supplying power to the > otg connector or not. > > On the axp221/axp223 this pin can alternatively be used as an output > which controls an external regulator which (optionally) supplies > power to the otg connector from the board. When the pin is used as > output it is called DRIVEVBUS in the datasheet. > > This commit adds support for the DRIVEVBUS pin as an extra pmic > controlled regulator. Since this is optional a new x-powers,drivebus dt > property is added. When this is present the misc-control register is > written to change the N_VBUSEN input pin to DRIVEVBUS output pin mode and > the extra drivebus regulator is registered with the regulator subsystem. > > Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> > Acked-by: Chen-Yu Tsai <wens@xxxxxxxx> > --- > Changes in v2: > -Set supply_name to just drivebus instead of drivevbus-supply > -Fix some whitespace errors in the docs > > Changes in v2: > -Rename the dt property to drive-vbus-en > -s/drivebus/drivevbus/ > -Add a line describing the drivevbus regulator to the table in > Documentation/devicetree/bindings/mfd/axp20x.txt > -Set supply_name to drivevbus-supply > --- > Documentation/devicetree/bindings/mfd/axp20x.txt | 6 +++++ Acked-by: Rob Herring <robh@xxxxxxxxxx> > drivers/regulator/axp20x-regulator.c | 30 ++++++++++++++++++++++++ > 2 files changed, 36 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
