bq24735.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/bq24735.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: Binding for TI BQ24735 Li-Ion Battery Charger
    9 
   10 maintainers:
   11   - Sebastian Reichel <sre@kernel.org>
   12 
   13 allOf:
   14   - $ref: power-supply.yaml#
   15 
   16 properties:
   17   compatible:
   18     const: ti,bq24735
   19 
   20   reg:
   21     maxItems: 1
   22 
   23   interrupts:
   24     description: AC adapter plug event interrupt
   25     maxItems: 1
   26 
   27   ti,ac-detect-gpios:
   28     maxItems: 1
   29     description: |
   30       This GPIO is optionally used to read the AC adapter status. This is a Host GPIO
   31       that is configured as an input and connected to the ACOK pin on the bq24735.
   32       Note: for backwards compatibility reasons, the GPIO must be active on AC adapter
   33       absence despite ACOK being active (high) on AC adapter presence.
   34 
   35   ti,charge-current:
   36     $ref: /schemas/types.yaml#/definitions/uint32
   37     description: |
   38       Used to control and set the charging current.
   39       This value must be between 128mA and 8.128A with a 64mA step resolution.
   40       The POR value is 0x0000h. This number is in mA (e.g. 8192).
   41       See spec for more information about the ChargeCurrent (0x14h) register.
   42 
   43   ti,charge-voltage:
   44     $ref: /schemas/types.yaml#/definitions/uint32
   45     description: |
   46       Used to control and set the charging voltage.
   47       This value must be between 1.024V and 19.2V with a 16mV step resolution.
   48       The POR value is 0x0000h. This number is in mV (e.g. 19200).
   49       See spec for more information about the ChargeVoltage (0x15h) register.
   50 
   51   ti,input-current:
   52     $ref: /schemas/types.yaml#/definitions/uint32
   53     description: |
   54       Used to control and set the charger input current.
   55       This value must be between 128mA and 8.064A with a 128mA step resolution.
   56       The POR value is 0x1000h. This number is in mA (e.g. 8064).
   57       See the spec for more information about the InputCurrent (0x3fh) register.
   58 
   59   ti,external-control:
   60     type: boolean
   61     description: |
   62       Indicates that the charger is configured externally and that the host should not
   63       attempt to enable/disable charging or set the charge voltage/current.
   64 
   65   poll-interval:
   66     $ref: /schemas/types.yaml#/definitions/uint32
   67     description: |
   68       If 'interrupts' is not specified, poll AC adapter presence with this interval (milliseconds).
   69 
   70 required:
   71   - compatible
   72   - reg
   73 
   74 additionalProperties: false
   75 
   76 examples:
   77   - |
   78     #include <dt-bindings/gpio/gpio.h>
   79 
   80     i2c0 {
   81       #address-cells = <1>;
   82       #size-cells = <0>;
   83 
   84       charger@9 {
   85         compatible = "ti,bq24735";
   86         reg = <0x9>;
   87         ti,ac-detect-gpios = <&gpio 72 0x1>;
   88       };
   89     };

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