Adding documentation for 3 new backup battery charging dts properties: - maxim,charging-current-microamp - maxim,charging-voltage-microvolt - maxim,output-resister-ohms 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..88825eaf2567 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,charging-current-microamp: Charging current setting. + The device supports 50/100/200/400/600/800uA. + If this property is unavailable then it will + charge with 50uA. + -maxim,charging-voltage-microvolt: 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,output-resister-ohms: Output resistor on Ohm. + Device supports 100/1000/3000/6000 Ohms. + Default will be set to 1000 Ohm. + Example: -------- #include <dt-bindings/mfd/max77620.h> -- 2.19.2
