1Binding for Richtek rt9455 battery charger 2 3Required properties: 4- compatible: it should contain one of the following: 5 "richtek,rt9455". 6- reg: integer, i2c address of the device. 7- interrupt-parent: the phandle for the interrupt controller that 8 services interrupts for this device. 9- interrupts: interrupt mapping for GPIO IRQ, it should be 10 configured with IRQ_TYPE_LEVEL_LOW flag. 11- richtek,output-charge-current: integer, output current from the charger to the 12 battery, in uA. 13- richtek,end-of-charge-percentage: integer, percent of the output charge current. 14 When the current in constant-voltage phase drops 15 below output_charge_current x end-of-charge-percentage, 16 charge is terminated. 17- richtek,battery-regulation-voltage: integer, maximum battery voltage in uV. 18- richtek,boost-output-voltage: integer, maximum voltage provided to consumer 19 devices, when the charger is in boost mode, in uV. 20 21Optional properties: 22- richtek,min-input-voltage-regulation: integer, input voltage level in uV, used to 23 decrease voltage level when the over current 24 of the input power source occurs. 25 This prevents input voltage drop due to insufficient 26 current provided by the power source. 27 Default: 4500000 uV (4.5V) 28- richtek,avg-input-current-regulation: integer, input current value in uA drained by the 29 charger from the power source. 30 Default: 500000 uA (500mA) 31 32Example: 33 34rt9455@22 { 35 compatible = "richtek,rt9455"; 36 reg = <0x22>; 37 38 interrupt-parent = <&gpio1>; 39 interrupts = <0 IRQ_TYPE_LEVEL_LOW>; 40 41 richtek,output-charge-current = <500000>; 42 richtek,end-of-charge-percentage = <10>; 43 richtek,battery-regulation-voltage = <4200000>; 44 richtek,boost-output-voltage = <5050000>; 45 46 richtek,min-input-voltage-regulation = <4500000>; 47 richtek,avg-input-current-regulation = <500000>; 48}; 49