On 1/31/2019 3:51 AM, Rob Herring wrote: > 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. > Thanks Rob. Given these properties will be under "backup-battery" section, so how about changing them to: - maxim,charging-current-microamp - maxim,charging-voltage-microvolt - maxim,output-resister-ohms Mark >> + >> Example: >> -------- >> #include <dt-bindings/mfd/max77620.h> >> -- >> 2.19.2 >>
