:orphan:

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.. dtcompatible:: nordic,nrf21540-fem
.. _dtbinding_nordic_nrf21540_fem:

nordic,nrf21540-fem
###################

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

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



.. code-block:: none

   This is a representation of the nRF21540 Radio Front-End module

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

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

                GPIO of the SOC controlling TX_EN pin of the nRF21540



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

                GPIO of the SOC controlling RX_EN pin of the nRF21540



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

                GPIO of the SOC controlling PDN pin of the nRF21540



         * - ``ant-sel-gpios``
           - ``phandle-array``
           - .. code-block:: none

                GPIO of the SOC controlling ANT-SEL pin of the nRF21540



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

                GPIO of the SOC controlling MODE pin of the nRF21540



         * - ``spi-if``
           - ``phandle``
           - .. code-block:: none

                Reference to the nordic,nrf21540-fem-spi SPI bus interface.

                This must be present to support SPI control of the FEM.



         * - ``tx-en-settle-time-us``
           - ``int``
           - .. code-block:: none

                Settling time in microseconds from state PG to TX.

                Default value is based on Table 6 of the nRF21540 Product
                Specification (v1.0), and can be overridden for tuned
                configurations.



             Default value: ``11``

         * - ``rx-en-settle-time-us``
           - ``int``
           - .. code-block:: none

                Settling time in microseconds from state PG to RX.

                Default value is based on Table 6 of the nRF21540 Product
                Specification (v1.0), and can be overridden for tuned
                configurations.



             Default value: ``11``

         * - ``pdn-settle-time-us``
           - ``int``
           - .. code-block:: none

                Settling time in microseconds from state PD to PG.

                Default value is based on Table 6 of the nRF21540 Product
                Specification (v1.0), and can be overridden for tuned
                configurations.



             Default value: ``18``

         * - ``trx-hold-time-us``
           - ``int``
           - .. code-block:: none

                Power-off time in microseconds when changing from RX or TX to PG.

                Default value is based on Table 6 of the nRF21540 Product
                Specification (v1.0), and can be overridden for tuned
                configurations.



             Default value: ``3``



   .. 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 "nordic,nrf21540-fem" compatible.

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

         * - Name
           - Type
           - Details

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

                indicates the operational status of a device


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

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

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

                compatible strings


             This property is **required**.

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

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

                register space


             See :ref:`zephyr: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:`zephyr: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


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

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


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

         * - ``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


         * - ``wakeup-source``
           - ``boolean``
           - .. code-block:: none

                Property to identify that a device can be used as wake up source.

                When this property is provided a specific flag is set into the
                device that tells the system that the device is capable of
                wake up the system.

                Wake up capable devices are disabled (interruptions will not wake up
                the system) by default but they can be enabled at runtime if necessary.