Kernel-4.18.0-80.el8_rt9455_charger

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>;

};