ti,bq25180 (on i2c bus)

Vendor: Texas Instruments

Description

BQ25180 I2C Controlled, 1-Cell, 1-A Linear Battery Charger with Power Path
and Ship Mode.

The device has a single child node for the charger. For example:

bq25180@6a {
  compatible = "ti,bq25180";
  reg = <0x6a>;

  constant-charge-current-max-microamp = <500000>;
};

Properties

Properties not inherited from the base binding file.

Name

Type

Details

device-chemistry

string

 
This describes the chemical technology of the battery. The "lithium-ion" value is a blanket type for all lithium-ion batteries. If the specific chemistry is unknown, this value can be used instead of the precise "lithium-ion-X" options.

Legal values: 'nickel-cadmium', 'nickel-metal-hydride', 'lithium-ion', 'lithium-ion-polymer', 'lithium-ion-iron-phosphate', 'lithium-ion-manganese-oxide'

ocv-capacity-table-0

array

 
An array providing the open circuit voltage (OCV) , which is used to look
up battery capacity according to current OCV value. The OCV unit is
microvolts.

Unlike the linux equivalent this array is required to be 11 elements
long, representing the voltages for 0-100% charge in 10% steps.

charge-full-design-microamp-hours

int

 
battery design capacity

re-charge-voltage-microvolt

int

 
limit to automatically start charging again

precharge-current-microamp

int

 
current for pre-charge phase

charge-term-current-microamp

int

 
current for charge termination phase

constant-charge-current-max-microamp

int

 
Charge current set at init time in uA, available range is 5 mA to 800 mA.
The value specified will be rounded down to the closest implemented
value. If set to 0 (default) skip setting the charge current value at
driver initialization.

constant-charge-voltage-max-microvolt

int

 
The maximum voltage that the battery will be charged at, defaults to
4.2V, matching the device default reset configuration.

Default value: 4200000

supply-gpios

phandle-array

 
GPIO specifier that controls power to the device.

This property should be provided when the device has a dedicated
switch that controls power to the device.  The supply state is
entirely the responsibility of the device driver.

Contrast with vin-supply.

vin-supply

phandle

 
Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.

This property should be provided when device power is supplied
by a shared regulator.  The supply state is dependent on the
request status of all devices fed by the regulator.

Contrast with supply-gpios.  If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.

precharge-voltage-threshold-microvolt

int

 
Threshold at which voltage to switch to constant current charge.
Must be either 3.0V or 2.8V

Default value: 3000000