| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/power/supply/richtek,rt9455.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Richtek rt9455 battery charger |
| 8 | |
| 9 | maintainers: |
| 10 | - Sebastian Reichel <sre@kernel.org> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: power-supply.yaml# |
| 14 | |
| 15 | properties: |
| 16 | compatible: |
| 17 | const: richtek,rt9455 |
| 18 | |
| 19 | reg: |
| 20 | maxItems: 1 |
| 21 | |
| 22 | interrupts: |
| 23 | maxItems: 1 |
| 24 | |
| 25 | richtek,output-charge-current: |
| 26 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 27 | description: output current from the charger to the battery, in uA. |
| 28 | |
| 29 | richtek,end-of-charge-percentage: |
| 30 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 31 | description: | |
| 32 | percent of the output charge current. When the current in constant-voltage phase drops |
| 33 | below output_charge_current x end-of-charge-percentage, charge is terminated. |
| 34 | |
| 35 | richtek,battery-regulation-voltage: |
| 36 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 37 | description: maximum battery voltage in uV. |
| 38 | |
| 39 | richtek,boost-output-voltage: |
| 40 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 41 | description: | |
| 42 | maximum voltage provided to consumer devices, when the charger is in boost mode, in uV. |
| 43 | |
| 44 | richtek,min-input-voltage-regulation: |
| 45 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 46 | description: | |
| 47 | input voltage level in uV, used to decrease voltage level when the over current of the |
| 48 | input power source occurs. This prevents input voltage drop due to insufficient |
| 49 | current provided by the power source. Defaults to 4500000 uV (4.5V). |
| 50 | |
| 51 | richtek,avg-input-current-regulation: |
| 52 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 53 | description: | |
| 54 | input current value in uA drained by the charger from the power source. |
| 55 | Defaults to 500000 uA (500mA). |
| 56 | |
| 57 | required: |
| 58 | - compatible |
| 59 | - reg |
| 60 | - interrupts |
| 61 | - richtek,output-charge-current |
| 62 | - richtek,end-of-charge-percentage |
| 63 | - richtek,battery-regulation-voltage |
| 64 | - richtek,boost-output-voltage |
| 65 | |
| 66 | additionalProperties: false |
| 67 | |
| 68 | examples: |
| 69 | - | |
| 70 | #include <dt-bindings/interrupt-controller/irq.h> |
| 71 | i2c { |
| 72 | #address-cells = <1>; |
| 73 | #size-cells = <0>; |
| 74 | |
| 75 | charger@22 { |
| 76 | compatible = "richtek,rt9455"; |
| 77 | reg = <0x22>; |
| 78 | |
| 79 | interrupt-parent = <&gpio1>; |
| 80 | interrupts = <0 IRQ_TYPE_LEVEL_LOW>; |
| 81 | |
| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame^] | 82 | richtek,output-charge-current = <500000>; |
| 83 | richtek,end-of-charge-percentage = <10>; |
| 84 | richtek,battery-regulation-voltage = <4200000>; |
| 85 | richtek,boost-output-voltage = <5050000>; |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 86 | |
| 87 | richtek,min-input-voltage-regulation = <4500000>; |
| 88 | richtek,avg-input-current-regulation = <500000>; |
| 89 | }; |
| 90 | }; |