Bindings/power/supply/bq24257.yaml

   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/bq24257.yaml#
   6 $schema: http://devicetree.org/meta-schemas/core.yaml#
   7
   8 title: Bq24250, bq24251 and bq24257 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,bq24250
  20       - ti,bq24251
  21       - ti,bq24257
  22
  23   reg:
  24     maxItems: 1
  25
  26   interrupts:
  27     maxItems: 1
  28
  29   ti,battery-regulation-voltage:
  30     $ref: /schemas/types.yaml#/definitions/uint32
  31     description: maximum charging voltage in uV
  32
  33   ti,charge-current:
  34     $ref: /schemas/types.yaml#/definitions/uint32
  35     description: maximum charging current in uA
  36
  37   ti,termination-current:
  38     $ref: /schemas/types.yaml#/definitions/uint32
  39     description: |
  40       charge will be terminated when current in constant-voltage phase
  41       drops below this value (in uA)
  42
  43   pg-gpios:
  44     description: |
  45       GPIO used for connecting the bq2425x device PG (Power Good) pin.
  46       This pin is not available on all devices however it should be used if
  47       possible as this is the recommended way to obtain the charger's input PG
  48       state. If this pin is not specified a software-based approach for PG
  49       detection is used.
  50     maxItems: 1
  51
  52   ti,current-limit:
  53     $ref: /schemas/types.yaml#/definitions/uint32
  54     description: |
  55       The maximum current to be drawn from the charger's input (in uA).
  56       If this property is not specified, the input limit current is set
  57       automatically using USB D+/D- signal based charger type detection.
  58       If the hardware does not support the D+/D- based detection, a default
  59       of 500,000 is used (=500mA) instead.
  60
  61   ti,ovp-voltage:
  62     $ref: /schemas/types.yaml#/definitions/uint32
  63     description: |
  64       Configures the over voltage protection voltage (in uV).
  65       If not specified a default of 6,5000,000 (=6.5V) is used.
  66
  67   ti,in-dpm-voltage:
  68     $ref: /schemas/types.yaml#/definitions/uint32
  69     description: |
  70       Configures the threshold input voltage for the dynamic power path management (in uV).
  71       If not specified a default of 4,360,000 (=4.36V) is used.
  72
  73 required:
  74   - compatible
  75   - reg
  76   - interrupts
  77   - ti,battery-regulation-voltage
  78   - ti,charge-current
  79   - ti,termination-current
  80
  81 additionalProperties: false
  82
  83 examples:
  84   - |
  85     #include <dt-bindings/gpio/gpio.h>
  86     #include <dt-bindings/interrupt-controller/irq.h>
  87     i2c {
  88       #address-cells = <1>;
  89       #size-cells = <0>;
  90
  91       charger@6a {
  92         compatible = "ti,bq24257";
  93         reg = <0x6a>;
  94         interrupt-parent = <&gpio1>;
  95         interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
  96
  97         pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
  98
  99         ti,battery-regulation-voltage = <4200000>;
 100         ti,charge-current = <1000000>;
 101         ti,termination-current = <50000>;
 102       };
 103     };
 104   - |
 105     #include <dt-bindings/gpio/gpio.h>
 106     #include <dt-bindings/interrupt-controller/irq.h>
 107     i2c {
 108       #address-cells = <1>;
 109       #size-cells = <0>;
 110
 111       charger@6a {
 112         compatible = "ti,bq24250";
 113         reg = <0x6a>;
 114         interrupt-parent = <&gpio1>;
 115         interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
 116
 117         ti,battery-regulation-voltage = <4200000>;
 118         ti,charge-current = <500000>;
 119         ti,termination-current = <50000>;
 120         ti,current-limit = <900000>;
 121         ti,ovp-voltage = <9500000>;
 122         ti,in-dpm-voltage = <4440000>;
 123       };
 124     };