128 lines · yaml
1# SPDX-License-Identifier: GPL-2.02# Copyright (C) 2021 Sebastian Reichel3%YAML 1.24---5$id: http://devicetree.org/schemas/power/supply/bq25890.yaml#6$schema: http://devicetree.org/meta-schemas/core.yaml#7 8title: Bq25890, bq25892, bq25895 and bq25896 Li-Ion Charger9 10maintainers:11 - Sebastian Reichel <sre@kernel.org>12 13allOf:14 - $ref: power-supply.yaml#15 16properties:17 compatible:18 oneOf:19 - enum:20 - ti,bq2589021 - items:22 - enum:23 - ti,bq2589224 - ti,bq2589525 - ti,bq2589626 - const: ti,bq2589027 28 reg:29 maxItems: 130 31 interrupts:32 maxItems: 133 34 ti,battery-regulation-voltage:35 $ref: /schemas/types.yaml#/definitions/uint3236 description: maximum charging voltage (in uV)37 38 ti,charge-current:39 $ref: /schemas/types.yaml#/definitions/uint3240 description: maximum charging current (in uA)41 42 ti,termination-current:43 $ref: /schemas/types.yaml#/definitions/uint3244 description: |45 charge will be terminated when current in constant-voltage phase46 drops below this value (in uA)47 48 ti,precharge-current:49 $ref: /schemas/types.yaml#/definitions/uint3250 description: maximum charge current during precharge phase (in uA)51 52 ti,minimum-sys-voltage:53 $ref: /schemas/types.yaml#/definitions/uint3254 description: |55 when battery is charging and it is below minimum system voltage,56 the system will be regulated above minimum-sys-voltage setting (in uV)57 58 ti,boost-voltage:59 $ref: /schemas/types.yaml#/definitions/uint3260 description: VBUS voltage level in boost mode (in uV)61 62 ti,boost-max-current:63 $ref: /schemas/types.yaml#/definitions/uint3264 description: maximum allowed current draw in boost mode (in uA)65 66 ti,boost-low-freq:67 description: boost mode frequency will be 500kHz, otherwise 1.5MHz68 type: boolean69 70 ti,use-ilim-pin:71 description: |72 ILIM resistor will be used and the input current will be the lower73 between the resistor setting and the IINLIM register setting74 type: boolean75 76 ti,thermal-regulation-threshold:77 $ref: /schemas/types.yaml#/definitions/uint3278 description: |79 temperature above which the charge current is lowered, to avoid overheating80 (in degrees Celsius). If omitted, the default setting will be used (120 degrees)81 82 ti,ibatcomp-micro-ohms:83 description: value of a resistor in series with the battery (in Micro Ohms)84 85 ti,ibatcomp-clamp-microvolt:86 description: max. charging voltage adjustment due to expected voltage drop on in-series resistor87 88required:89 - compatible90 - reg91 - interrupts92 - ti,battery-regulation-voltage93 - ti,charge-current94 - ti,termination-current95 - ti,precharge-current96 - ti,minimum-sys-voltage97 - ti,boost-voltage98 - ti,boost-max-current99 100unevaluatedProperties: false101 102examples:103 - |104 #include <dt-bindings/interrupt-controller/irq.h>105 i2c {106 #address-cells = <1>;107 #size-cells = <0>;108 109 charger@6a {110 compatible = "ti,bq25890";111 reg = <0x6a>;112 113 interrupt-parent = <&gpio1>;114 interrupts = <16 IRQ_TYPE_EDGE_FALLING>;115 116 ti,battery-regulation-voltage = <4200000>;117 ti,charge-current = <1000000>;118 ti,termination-current = <50000>;119 ti,precharge-current = <128000>;120 ti,minimum-sys-voltage = <3600000>;121 ti,boost-voltage = <5000000>;122 ti,boost-max-current = <1000000>;123 124 ti,use-ilim-pin;125 ti,thermal-regulation-threshold = <120>;126 };127 };128