On Tue, Jan 29, 2019 at 04:55:29PM +0800, Mark Zhang wrote: > Adding documentation for 3 new backup battery charging dts > properties: > - maxim,backup-battery-charging-current > - maxim,backup-battery-charging-voltage > - maxim,backup-battery-output-resister > > Signed-off-by: Mark Zhang <markz@xxxxxxxxxx> > --- > .../devicetree/bindings/mfd/max77620.txt | 20 +++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mfd/max77620.txt b/Documentation/devicetree/bindings/mfd/max77620.txt > index 9c16d51cc15b..484b17e4fba5 100644 > --- a/Documentation/devicetree/bindings/mfd/max77620.txt > +++ b/Documentation/devicetree/bindings/mfd/max77620.txt > @@ -122,6 +122,26 @@ For DT binding details of different sub modules like GPIO, pincontrol, > regulator, power, please refer respective device-tree binding document > under their respective sub-system directories. > > +Backup Battery: > +============== > +This sub-node configure charging backup battery of the device. Device has > +support of charging the backup battery. The subnode name is "backup-battery". > +The property for backup-battery child nodes as: > +Presence of this child node will enable the backup battery charging. > + > +Optional properties: > + -maxim,backup-battery-charging-current: Charging current setting. > + The device supports 50/100/200/400/600/800uA. > + If this property is unavailable then it will > + charge with 50uA. > + -maxim,backup-battery-charging-voltage: Charging Voltage Limit Setting. > + Device supports 2500000/3000000/3300000/350000uV. > + Default will be set to 2500mV. The voltage will be roundoff > + to nearest lower side if other than above is configured. > + -maxim,backup-battery-output-resister: Output resistor on Ohm. > + Device supports 100/1000/3000/6000 Ohms. > + Default will be set to 1000 Ohm. These need property unit suffixes as defined in property-units.txt. The names are kind of long, so perhaps shorten them a bit. > + > Example: > -------- > #include <dt-bindings/mfd/max77620.h> > -- > 2.19.2 >
