ti,drv8424

Vendor: Texas Instruments

Note

An implementation of a driver matching this compatible is available in drivers/stepper/ti/drv8424.c.

Description

TI DRV8424 stepper motor driver.
SAFETY:
The counter needs to support both set_top_value functionalities: Setting a new top value and
attaching an ISR to the turnaround.
SAFETY:
The step gpio pin needs to be connected directly to the SOC GPIO controller, connecting the
pin to a controller connected via a bus such as i2c or others will lead to undefined behaviour.

Example:
drv8424: drv8424 {
  status = "okay";
  compatible = "ti,drv8424";

  dir-gpios = <&arduino_header 18 0>;
  step-gpios = <&arduino_header 19 0>;
  sleep-gpios = <&arduino_header 15 GPIO_ACTIVE_LOW>;
  en-gpios  = <&arduino_header 14 0>;
  m0-gpios = <&mikroe_stepper_gpios 0 0>;
  m1-gpios = <&mikroe_stepper_gpios 1 0>;
  counter = <&counter2>;
};

Properties

Node specific propertiesDeprecated node specific propertiesBase properties

Properties not inherited from the base binding file.

Name	Type	Details
fault-gpios	phandle-array	Fault pin.
en-gpios	phandle-array	Enable pin.
sleep-gpios	phandle-array	Sleep pin (active low).
m0-gpios	phandle-array	Microstep configuration pin 0. This property is required.
m1-gpios	phandle-array	Microstep configuration pin 1. This property is required.
counter	phandle	Counter used for generating step-accurate pulse signals. This property is required.
micro-step-res	int	micro-step resolution to be set while initializing the device driver. Default value: 1 Legal values: 1, 2, 4, 8, 16, 32, 64, 128, 256
step-gpios	phandle-array	The GPIO pins used to send step signals to the stepper motor.
dir-gpios	phandle-array	The GPIO pins used to send direction signals to the stepper motor. Pin will be driven high for forward direction and low for reverse direction.