47 lines
1.7 KiB
Plaintext
47 lines
1.7 KiB
Plaintext
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.
|
|
- 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>;
|
|
};
|