nxp,pca9422-charger

Vendor: NXP Semiconductors

Note

An implementation of a driver matching this compatible is available in drivers/charger/charger_pca9422.c.

Description

NXP PCA9422 battery charger

Properties

Properties not inherited from the base binding file.

Name

Type

Details

constant-charge-current-max-microamp

int

 
Fast Charge current set at init time in uA, available range is 2.5mA to 640mA.
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.

This property is required.

Default value: 100000

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.

This property is required.

Default value: 4200000

precharge-current-percent

int

 
Precharge current as x%(7% or 16%) of Fast charge current.
Refer to CHARGER_CNTL_1 register description for details.

Default value: 16

Legal values: 7, 16

charge-termination-current-percent

int

 
Topoff current as x%*10 (2.5%, 5.0%, 7.5%, or 10.0%)
of Fast charge current. Charge will finish when charging
current is less than topoff current.
Refer to CHARGER_CNTL_4 register description for details.

Default value: 25

Legal values: 25, 50, 75, 100

re-charge-threshold-microvolt

int

 
Recharge threshold in relation to Vbat_reg.
Refer to CHARGER_CNTL_4 register description for details.

Default value: 100000

Legal values: 100000, 150000, 200000

input-current-limit-microamp

int

 
Input current limit on VIN, available range is 45mA to 1195mA.

Default value: 470000

system-voltage-min-threshold-microvolt

int

 
System regulation voltage. It is higher 200mV than Vbat_reg.
Vbatreg will clamp by Vsys_reg - 200mV.

Default value: 4550000

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