nxp,pca9685-pwm (on i2c bus)

Vendor: NXP Semiconductors

Note

An implementation of a driver matching this compatible is available in drivers/pwm/pwm_pca9685.c.

Description

NXP PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller

Properties

Properties not inherited from the base binding file.

Name

Type

Details

#pwm-cells

int

Number of items to expect in a pwm specifier

This property is required.

Constant value: 2

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.

open-drain

boolean

The 16 LEDn outputs are configured with an open-drain structure. Otherwise they are configured with a totem pole structure.

och-on-ack

boolean

Outputs change on ACK.  Otherwise the outputs change on STOP command.

invert

boolean

Output logic state inverted. Value to use when no external driver used.

Specifier cell names

  • pwm cells: channel, period