:orphan:

.. _nordic_nrf_twis:

nordic,nrf-twis
###############

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

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

These nodes are "i2c" bus nodes.

.. code-block:: none

   Nordic nRF family TWIS (TWI slave with EasyDMA).

   Note: for Zephyr users, the I2C slave API is not available for
   these devices. See this issue for more details and a HAL-based
   workaround:

       https://github.com/zephyrproject-rtos/zephyr/issues/21445

   This binding can be used for nodes which can represent TWIS
   peripherals. A single SoC peripheral ID is often associated with
   multiple I2C peripherals, like a TWIM and a TWIS. You can choose
   TWIS by setting the node's "compatible" to "nordic,nrf-twis"
   and its "status" to "okay", e.g. using an overlay file like this:

       /* This is for TWIS0 -- change to "i2c1" for TWIS1, etc. */
       &i2c0 {
               compatible = "nordic,nrf-twis";
               status = "okay";
               /* other property settings can go here */
       };

   This works on any supported SoC, for all TWIS instances.

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

         * - ``address-0``
           - ``int``
           - .. code-block:: none

                TWI slave address 0


         * - ``address-1``
           - ``int``
           - .. code-block:: none

                TWI slave address 1


         * - ``sda-pin``
           - ``int``
           - .. code-block:: none

                The SDA pin to use.

                For pins P0.0 through P0.31, use the pin number. For example,
                to use P0.16 for SDA, set:

                    sda-pin = <16>;

                For pins P1.0 through P1.31, add 32 to the pin number. For
                example, to use P1.2 for SDA, set:

                    sda-pin = <34>;  /* 32 + 2 */



             This property is **required**.

         * - ``scl-pin``
           - ``int``
           - .. code-block:: none

                The SCL pin to use. The pin numbering scheme is the same as
                the sda-pin property's.



             This property is **required**.

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

                Initial clock frequency in Hz




   .. 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,nrf-twis" compatible.

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

         * - Name
           - Type
           - Details

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

                register space


             This property is **required**.

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

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

                interrupts for device


             This property is **required**.

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

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

                number of address cells in reg property


             This property is **required**.

             Constant value: ``1``

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

                number of size cells in reg property


             This property is **required**.

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

                name of each register space


         * - ``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


         * - ``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