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ti,bq274xx (on i2c bus)

Vendor: Texas Instruments

Description

Texas Instruments BQ274xx Fuel Gauge

Properties

Properties not inherited from the base binding file.

Name

Type

Details

design-voltage

int

 
Battery Design Voltage in mV (3300 - 4400)

This property is required.

design-capacity

int

 
Battery Design Capacity in mAh

This property is required.

taper-current

int

 
Current in mA slightly higher than the taper current threshold at which
point the charger cuts off charging.

This property is required.

terminate-voltage

int

 
Minimum operating voltage of your system. This is the target where the
gauge typically reports 0% capacity. In mV.

This property is required.

chemistry-id

int

 
The value of the Chem ID register. When zero, the driver will not check the register.
See the reference manual for the specific BQ274xx variant for values.

int-gpios

phandle-array

 
The INT signal defaults to active low open drain, so requires a
pull-up on the board. By default it acts as an output and signals
specific events happening (e.g. change in State of Charge).
Note this pin is required for this sensor's power management APIs: in
shutdown mode it acts as an input and toggling it will make the sensor
exit the mode.

zephyr,lazy-load

boolean

 
Configuring the sensor can take a long time, using lazy loading we can delay
until the first sample request and keep the boot time as short as possible.

friendly-name

string

 
Human readable string describing the sensor. It can be used to
distinguish multiple instances of the same model (e.g., lid accelerometer
vs. base accelerometer in a laptop) to a host operating system.

This property is defined in the Generic Sensor Property Usages of the HID
Usage Tables specification
(https://usb.org/sites/default/files/hut1_3_0.pdf, section 22.5).

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.