:orphan:

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.. dtcompatible:: allegro,a4979
.. _dtbinding_allegro_a4979:

allegro,a4979
#############

.. sidebar:: Overview

   :Name: ``allegro,a4979``
   :Vendor: :ref:`Allegro DVT <dt_vendor_allegro>`
   :Used in: :zephyr:board-catalog:`List of boards <#compatibles=allegro,a4979>` using
               this compatible
   :Driver: :zephyr_file:`drivers/stepper/allegro/a4979.c`

Description
***********



.. code-block:: none

   Allegro A4979 microstepping stepper motor driver.
   A4979 is a flexible microstepping motor driver with built-in translator for easy operation.
   It is designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step
   modes.

Examples
********

.. code-block:: dts

   a4979: a4979 {
       status = "okay";
       compatible = "allegro,a4979";
       micro-step-res = <2>;
       reset-gpios = <&gpiod 10 GPIO_ACTIVE_HIGH>;
       en-gpios = <&gpiod 11 GPIO_ACTIVE_HIGH>;
       m0-gpios = <&gpiod 13 0>;
       m1-gpios = <&gpiod 12 0>;
   };


Properties
**********

.. tabs::

   .. group-tab:: Node specific properties

      Properties not inherited from the base binding file.

      .. list-table::
         :widths: 1 1 4
         :header-rows: 1

         * - Name
           - Type
           - Details

         * - ``step-width-ns``
           - ``int``
           - .. code-block:: none

                Minimum pulse width in nanoseconds for the step signal.



             Default value: ``1000``

         * - ``reset-gpios``
           - ``phandle-array``
           - .. code-block:: none

                Reset pin


             This property is **required**.

         * - ``micro-step-res``
           - ``int``
           - .. code-block:: none

                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``

         * - ``en-gpios``
           - ``phandle-array``
           - .. code-block:: none

                GPIO pins used to control the enable signal of the motor driver.



         * - ``m0-gpios``
           - ``phandle-array``
           - .. code-block:: none

                Microstep configuration pin 0.


         * - ``m1-gpios``
           - ``phandle-array``
           - .. code-block:: none

                Microstep configuration pin 1.




   .. group-tab:: Deprecated node specific properties

      Deprecated properties not inherited from the base binding file.

      (None)

   .. group-tab:: Base properties

      Properties inherited from the base binding file, which defines
      common properties that may be set on many nodes. Not all of these
      may apply to the "allegro,a4979" compatible.

      (None)