Documentation/devicetree/bindings/power/bq24257.txt

   1 Binding for TI bq24250/bq24251/bq24257 Li-Ion Charger
   2
   3 Required properties:
   4 - compatible: Should contain one of the following:
   5  * "ti,bq24250"
   6  * "ti,bq24251"
   7  * "ti,bq24257"
   8 - reg: integer, i2c address of the device.
   9 - interrupt-parent: Should be the phandle for the interrupt controller. Use in
  10     conjunction with "interrupts".
  11 - interrupts: Interrupt mapping for GPIO IRQ (configure for both edges). Use in
  12     conjunction with "interrupt-parent".
  13 - ti,battery-regulation-voltage: integer, maximum charging voltage in uV.
  14 - ti,charge-current: integer, maximum charging current in uA.
  15 - ti,termination-current: integer, charge will be terminated when current in
  16     constant-voltage phase drops below this value (in uA).
  17
  18 Optional properties:
  19 - pg-gpios: GPIO used for connecting the bq2425x device PG (Power Good) pin.
  20     This pin is not available on all devices however it should be used if
  21     possible as this is the recommended way to obtain the charger's input PG
  22     state. If this pin is not specified a software-based approach for PG
  23     detection is used.
  24 - ti,current-limit: The maximum current to be drawn from the charger's input
  25     (in uA). If this property is not specified, the input limit current is
  26     set automatically using USB D+/D- signal based charger type detection.
  27     If the hardware does not support the D+/D- based detection, a default
  28     of 500,000 is used (=500mA) instead.
  29 - ti,ovp-voltage: Configures the over voltage protection voltage (in uV). If
  30     not specified a default of 6,5000,000 (=6.5V) is used.
  31 - ti,in-dpm-voltage: Configures the threshold input voltage for the dynamic
  32     power path management (in uV). If not specified a default of 4,360,000
  33     (=4.36V) is used.
  34
  35 Example:
  36
  37 bq24257 {
  38         compatible = "ti,bq24257";
  39         reg = <0x6a>;
  40         interrupt-parent = <&gpio1>;
  41         interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
  42
  43         pg-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
  44
  45         ti,battery-regulation-voltage = <4200000>;
  46         ti,charge-current = <1000000>;
  47         ti,termination-current = <50000>;
  48 };
  49
  50 Example:
  51
  52 bq24250 {
  53         compatible = "ti,bq24250";
  54         reg = <0x6a>;
  55         interrupt-parent = <&gpio1>;
  56         interrupts = <16 IRQ_TYPE_EDGE_BOTH>;
  57
  58         ti,battery-regulation-voltage = <4200000>;
  59         ti,charge-current = <500000>;
  60         ti,termination-current = <50000>;
  61         ti,current-limit = <900000>;
  62         ti,ovp-voltage = <9500000>;
  63         ti,in-dpm-voltage = <4440000>;
  64 };