linux/Documentation/devicetree/bindings/power/supply/rt9455_charger.txt
Sebastian Reichel f333253246 power/supply: unify DT documentation
Currently the power supply device tree documentation is spread
in .../bindings/power_supply and .../bindings/power. This
unifies the files for chargers and battery fuel gauges in
.../bindings/power/supply and the ones for system reset/shutdown
in .../bindings/power/reset (same structure as used for the
drivers itself).

Signed-off-by: Sebastian Reichel <sre@kernel.org>
2016-08-11 01:11:29 +02:00

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Binding for Richtek rt9455 battery charger
Required properties:
- compatible: it should contain one of the following:
"richtek,rt9455".
- reg: integer, i2c address of the device.
- interrupt-parent: the phandle for the interrupt controller that
services interrupts for this device.
- interrupts: interrupt mapping for GPIO IRQ, it should be
configured with IRQ_TYPE_LEVEL_LOW flag.
- richtek,output-charge-current: integer, output current from the charger to the
battery, in uA.
- richtek,end-of-charge-percentage: integer, percent of the output charge current.
When the current in constant-voltage phase drops
below output_charge_current x end-of-charge-percentage,
charge is terminated.
- richtek,battery-regulation-voltage: integer, maximum battery voltage in uV.
- richtek,boost-output-voltage: integer, maximum voltage provided to consumer
devices, when the charger is in boost mode, in uV.
Optional properties:
- richtek,min-input-voltage-regulation: integer, input voltage level in uV, used to
decrease voltage level when the over current
of the input power source occurs.
This prevents input voltage drop due to insufficient
current provided by the power source.
Default: 4500000 uV (4.5V)
- richtek,avg-input-current-regulation: integer, input current value in uA drained by the
charger from the power source.
Default: 500000 uA (500mA)
Example:
rt9455@22 {
compatible = "richtek,rt9455";
reg = <0x22>;
interrupt-parent = <&gpio1>;
interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
richtek,output-charge-current = <500000>;
richtek,end-of-charge-percentage = <10>;
richtek,battery-regulation-voltage = <4200000>;
richtek,boost-output-voltage = <5050000>;
richtek,min-input-voltage-regulation = <4500000>;
richtek,avg-input-current-regulation = <500000>;
};