2023-08-30 17:31:07 +02:00
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# SPDX-License-Identifier: GPL-2.0
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# Copyright (C) 2021 Sebastian Reichel
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/power/supply/bq25890.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Bq25890, bq25892, bq25895 and bq25896 Li-Ion Charger
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maintainers:
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- Sebastian Reichel <sre@kernel.org>
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allOf:
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- $ref: power-supply.yaml#
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properties:
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compatible:
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oneOf:
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- enum:
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- ti,bq25890
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- items:
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- enum:
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- ti,bq25892
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- ti,bq25895
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- ti,bq25896
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- const: ti,bq25890
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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ti,battery-regulation-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: maximum charging voltage (in uV)
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ti,charge-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: maximum charging current (in uA)
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ti,termination-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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charge will be terminated when current in constant-voltage phase
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drops below this value (in uA)
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ti,precharge-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: maximum charge current during precharge phase (in uA)
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ti,minimum-sys-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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when battery is charging and it is below minimum system voltage,
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the system will be regulated above minimum-sys-voltage setting (in uV)
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ti,boost-voltage:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: VBUS voltage level in boost mode (in uV)
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ti,boost-max-current:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: maximum allowed current draw in boost mode (in uA)
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ti,boost-low-freq:
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description: boost mode frequency will be 500kHz, otherwise 1.5MHz
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type: boolean
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ti,use-ilim-pin:
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description: |
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ILIM resistor will be used and the input current will be the lower
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between the resistor setting and the IINLIM register setting
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type: boolean
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ti,thermal-regulation-threshold:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: |
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temperature above which the charge current is lowered, to avoid overheating
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(in degrees Celsius). If omitted, the default setting will be used (120 degrees)
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ti,ibatcomp-micro-ohms:
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description: value of a resistor in series with the battery (in Micro Ohms)
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ti,ibatcomp-clamp-microvolt:
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description: max. charging voltage adjustment due to expected voltage drop on in-series resistor
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required:
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- compatible
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- reg
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- interrupts
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- ti,battery-regulation-voltage
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- ti,charge-current
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- ti,termination-current
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- ti,precharge-current
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- ti,minimum-sys-voltage
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- ti,boost-voltage
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- ti,boost-max-current
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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2023-10-24 12:59:35 +02:00
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i2c {
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2023-08-30 17:31:07 +02:00
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#address-cells = <1>;
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#size-cells = <0>;
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charger@6a {
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compatible = "ti,bq25890";
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reg = <0x6a>;
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interrupt-parent = <&gpio1>;
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interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
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ti,battery-regulation-voltage = <4200000>;
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ti,charge-current = <1000000>;
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ti,termination-current = <50000>;
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ti,precharge-current = <128000>;
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ti,minimum-sys-voltage = <3600000>;
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ti,boost-voltage = <5000000>;
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ti,boost-max-current = <1000000>;
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ti,use-ilim-pin;
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ti,thermal-regulation-threshold = <120>;
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};
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};
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