:orphan:

.. _nordic_nrf_sw_pwm:

nordic,nrf-sw-pwm
#################

Vendor: :ref:`Nordic Semiconductor <dt_vendor_nordic>`

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



.. code-block:: none

   nRFx S/W PWM

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

         * - ``generator``
           - ``phandle``
           - .. code-block:: none

                Reference to TIMER or RTC instance for generating PWM output signals



         * - ``channel-count``
           - ``int``
           - .. code-block:: none

                Number of PWM channels. Limited by RTC/TIMER instance compare registers
                minus 1.



             This property is **required**.

         * - ``clock-prescaler``
           - ``int``
           - .. code-block:: none

                Clock prescaler for RTC or TIMER used for generating PWM output signals.

                RTC: needs to be set to 0, which gives 32768 Hz base clock for PWM
                generation.

                TIMER: 16 MHz / 2^prescaler base clock is used for PWM generation.



             This property is **required**.

         * - ``ppi-base``
           - ``int``
           - .. code-block:: none

                PPI base used for PPI index calculation used for PWM output generation


             This property is **required**.

         * - ``gpiote-base``
           - ``int``
           - .. code-block:: none

                GPIOTE base used for GPIOTE index calculation used for PWM output generation


             This property is **required**.

         * - ``#pwm-cells``
           - ``int``
           - .. code-block:: none

                Number of items to expect in a pwm specifier


             This property is **required**.

             Constant value: ``1``



   .. group-tab:: Deprecated node specific properties

      Deprecated properties not inherited from the base binding file.

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

         * - Name
           - Type
           - Details

         * - ``timer-instance``
           - ``int``
           - .. code-block:: none

                Timer instance to use for generating the PWM output signals. Deprecated
                in favour of 'generator' property.





   .. 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 "nordic,nrf-sw-pwm" compatible.

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

         * - Name
           - Type
           - Details

         * - ``label``
           - ``string``
           - .. code-block:: none

                Human readable string describing the device (used as device_get_binding() argument)


             This property is **required**.

             See :ref:`dt-important-props` for more information.

         * - ``status``
           - ``string``
           - .. code-block:: none

                indicates the operational status of a device


             Legal values: ``'ok'``, ``'okay'``, ``'disabled'``, ``'reserved'``, ``'fail'``, ``'fail-sss'``

             See :ref:`dt-important-props` for more information.

         * - ``compatible``
           - ``string-array``
           - .. code-block:: none

                compatible strings


             This property is **required**.

             See :ref:`dt-important-props` for more information.

         * - ``reg``
           - ``array``
           - .. code-block:: none

                register space


             See :ref:`dt-important-props` for more information.

         * - ``reg-names``
           - ``string-array``
           - .. code-block:: none

                name of each register space


         * - ``interrupts``
           - ``array``
           - .. code-block:: none

                interrupts for device


             See :ref:`dt-important-props` for more information.

         * - ``interrupts-extended``
           - ``compound``
           - .. code-block:: none

                extended interrupt specifier for device


         * - ``interrupt-names``
           - ``string-array``
           - .. code-block:: none

                name of each interrupt


         * - ``interrupt-parent``
           - ``phandle``
           - .. code-block:: none

                phandle to interrupt controller node


         * - ``clocks``
           - ``phandle-array``
           - .. code-block:: none

                Clock gate information


         * - ``clock-names``
           - ``string-array``
           - .. code-block:: none

                name of each clock


         * - ``#address-cells``
           - ``int``
           - .. code-block:: none

                number of address cells in reg property


         * - ``#size-cells``
           - ``int``
           - .. code-block:: none

                number of size cells in reg property


         * - ``dmas``
           - ``phandle-array``
           - .. code-block:: none

                DMA channels specifiers


         * - ``dma-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of DMA channel specifiers


         * - ``io-channels``
           - ``phandle-array``
           - .. code-block:: none

                IO channels specifiers


         * - ``io-channel-names``
           - ``string-array``
           - .. code-block:: none

                Provided names of IO channel specifiers





Specifier cell names
********************

- pwm cells: channel