Documentation/devicetree/bindings/power/rt9455_charger.txt

   1 Binding for Richtek rt9455 battery charger
   2
   3 Required 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
  21 Optional 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
  32 Example:
  33
  34 rt9455@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 };