xref: /openbmc/linux/Documentation/devicetree/bindings/power/supply/richtek,rt9455.yaml (revision 1ac731c529cd4d6adbce134754b51ff7d822b145)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/supply/richtek,rt9455.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Richtek rt9455 battery charger

maintainers:
  - Sebastian Reichel <sre@kernel.org>

allOf:
  - $ref: power-supply.yaml#

properties:
  compatible:
    const: richtek,rt9455

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  richtek,output-charge-current:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: output current from the charger to the battery, in uA.

  richtek,end-of-charge-percentage:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: |
      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:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: maximum battery voltage in uV.

  richtek,boost-output-voltage:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: |
      maximum voltage provided to consumer devices, when the charger is in boost mode, in uV.

  richtek,min-input-voltage-regulation:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: |
      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. Defaults to 4500000 uV (4.5V).

  richtek,avg-input-current-regulation:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: |
      input current value in uA drained by the charger from the power source.
      Defaults to 500000 uA (500mA).

required:
  - compatible
  - reg
  - interrupts
  - richtek,output-charge-current
  - richtek,end-of-charge-percentage
  - richtek,battery-regulation-voltage
  - richtek,boost-output-voltage

additionalProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/irq.h>
    i2c {
      #address-cells = <1>;
      #size-cells = <0>;

      charger@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>;
      };
    };