bq25890.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 # Copyright (C) 2021 Sebastian Reichel
    3 %YAML 1.2
    4 ---
    5 $id: http://devicetree.org/schemas/power/supply/bq25890.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: Binding for bq25890, bq25892, bq25895 and bq25896 Li-Ion Charger
    9 
   10 maintainers:
   11   - Sebastian Reichel <sre@kernel.org>
   12 
   13 allOf:
   14   - $ref: power-supply.yaml#
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - ti,bq25890
   20       - ti,bq25892
   21       - ti,bq25895
   22       - ti,bq25896
   23 
   24   reg:
   25     maxItems: 1
   26 
   27   interrupts:
   28     maxItems: 1
   29 
   30   ti,battery-regulation-voltage:
   31     $ref: /schemas/types.yaml#/definitions/uint32
   32     description: maximum charging voltage (in uV)
   33 
   34   ti,charge-current:
   35     $ref: /schemas/types.yaml#/definitions/uint32
   36     description: maximum charging current (in uA)
   37 
   38   ti,termination-current:
   39     $ref: /schemas/types.yaml#/definitions/uint32
   40     description: |
   41       charge will be terminated when current in constant-voltage phase
   42       drops below this value (in uA)
   43 
   44   ti,precharge-current:
   45     $ref: /schemas/types.yaml#/definitions/uint32
   46     description: maximum charge current during precharge phase (in uA)
   47 
   48   ti,minimum-sys-voltage:
   49     $ref: /schemas/types.yaml#/definitions/uint32
   50     description: |
   51       when battery is charging and it is below minimum system voltage,
   52       the system will be regulated above minimum-sys-voltage setting (in uV)
   53 
   54   ti,boost-voltage:
   55     $ref: /schemas/types.yaml#/definitions/uint32
   56     description: VBUS voltage level in boost mode (in uV)
   57 
   58   ti,boost-max-current:
   59     $ref: /schemas/types.yaml#/definitions/uint32
   60     description: maximum allowed current draw in boost mode (in uA)
   61 
   62   ti,boost-low-freq:
   63     description: boost mode frequency will be 500kHz, otherwise 1.5MHz
   64     type: boolean
   65 
   66   ti,use-ilim-pin:
   67     description: |
   68       ILIM resistor will be used and the input current will be the lower
   69       between the resistor setting and the IINLIM register setting
   70     type: boolean
   71 
   72   ti,thermal-regulation-threshold:
   73     $ref: /schemas/types.yaml#/definitions/uint32
   74     description: |
   75       temperature above which the charge current is lowered, to avoid overheating
   76       (in degrees Celsius). If omitted, the default setting will be used (120 degrees)
   77 
   78   ti,ibatcomp-micro-ohms:
   79     description: value of a resistor in series with the battery (in Micro Ohms)
   80 
   81   ti,ibatcomp-clamp-microvolt:
   82     description: max. charging voltage adjustment due to expected voltage drop on in-series resistor
   83 
   84 required:
   85   - compatible
   86   - reg
   87   - interrupts
   88   - ti,battery-regulation-voltage
   89   - ti,charge-current
   90   - ti,termination-current
   91   - ti,precharge-current
   92   - ti,minimum-sys-voltage
   93   - ti,boost-voltage
   94   - ti,boost-max-current
   95 
   96 additionalProperties: false
   97 
   98 examples:
   99   - |
  100     #include <dt-bindings/interrupt-controller/irq.h>
  101     i2c0 {
  102       #address-cells = <1>;
  103       #size-cells = <0>;
  104 
  105       charger@6a {
  106         compatible = "ti,bq25890";
  107         reg = <0x6a>;
  108 
  109         interrupt-parent = <&gpio1>;
  110         interrupts = <16 IRQ_TYPE_EDGE_FALLING>;
  111 
  112         ti,battery-regulation-voltage = <4200000>;
  113         ti,charge-current = <1000000>;
  114         ti,termination-current = <50000>;
  115         ti,precharge-current = <128000>;
  116         ti,minimum-sys-voltage = <3600000>;
  117         ti,boost-voltage = <5000000>;
  118         ti,boost-max-current = <1000000>;
  119 
  120         ti,use-ilim-pin;
  121         ti,thermal-regulation-threshold = <120>;
  122       };
  123     };

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sys/contrib/device-tree/Bindings/power/supply/bq25890.yaml