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.. dtcompatible:: nuvoton,npcx-i3c
.. _dtbinding_nuvoton_npcx_i3c:

nuvoton,npcx-i3c
################

Vendor: :ref:`Nuvoton Technology Corporation <dt_vendor_nuvoton>`

.. note::

   An implementation of a driver matching this compatible is available in
   :zephyr_file:`drivers/i3c/i3c_npcx.c`.

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

These nodes are "['i3c', 'i2c']" bus nodes.

.. code-block:: none

   Nuvoton I3C controller

   Representation:

   /* If CONFIG_I3C_NPCX is enabled, the suggested clock configuration is as follows: */
   &pcc {
     clock-frequency = <DT_FREQ_M(90)>; /* OFMCLK runs at 90MHz */
     core-prescaler = <3>; /* CORE_CLK runs at 30MHz */
     apb1-prescaler = <6>; /* APB1_CLK runs at 15MHz */
     apb2-prescaler = <6>; /* APB2_CLK runs at 15MHz */
     apb3-prescaler = <6>; /* APB3_CLK runs at 15MHz */
     apb4-prescaler = <3>; /* APB4_CLK runs at 30MHz */
   };

   &rst {
     status = "okay";
   };

   &i3c0 {
     status = "okay";

     /* I3C clock frequency suggestion = <PP_SCL, OD_SCL> */
      * Full speed = <12500000, 4170000>
      * Normal speed = <7500000, 1500000>
      */
     i3c-scl-hz = <12500000>;
     i3c-od-scl-hz = <4170000>;
   };

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

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

                Reset information


             This property is **required**.

         * - ``i3c-od-scl-hz``
           - ``int``
           - .. code-block:: none

                Open Drain Frequency for the I3C controller. When undefined, use
                the controller default or as specified by the I3C specification.



         * - ``i3c-scl-hz``
           - ``int``
           - .. code-block:: none

                Frequency of the SCL signal used for I3C transfers. When undefined,
                use the controller default or as specified by the I3C specification.



         * - ``i2c-scl-hz``
           - ``int``
           - .. code-block:: none

                Frequency of the SCL signal used for I2C transfers. When undefined
                and there are I2C devices attached to the bus, look at the Legacy
                Virtual Register (LVR) of all connected I2C devices to determine
                the maximum allowed frequency.



         * - ``pinctrl-0``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the first state. Content is specific to the
                selected pin controller driver implementation.



         * - ``pinctrl-1``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the second state. See pinctrl-0.



         * - ``pinctrl-2``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the third state. See pinctrl-0.



         * - ``pinctrl-3``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the fourth state. See pinctrl-0.



         * - ``pinctrl-4``
           - ``phandles``
           - .. code-block:: none

                Pin configuration/s for the fifth state. See pinctrl-0.



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

                Names for the provided states. The number of names needs to match the
                number of states.



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

                Name of each reset




   .. 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 "nuvoton,npcx-i3c" 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:`zephyr:dt-important-props` for more information.

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

                interrupts for device


             This property is **required**.

             See :ref:`zephyr: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: ``3``

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

                number of size cells in reg property


             This property is **required**.

         * - ``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-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


         * - ``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.

             This property is **deprecated**.

         * - ``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


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

                mailbox / IPM channels specifiers


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

                Provided names of mailbox / IPM channel specifiers


         * - ``power-domains``
           - ``phandle-array``
           - .. code-block:: none

                Power domain specifiers


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

                Provided names of power domain specifiers


         * - ``#power-domain-cells``
           - ``int``
           - .. code-block:: none

                Number of cells in power-domains property


         * - ``zephyr,deferred-init``
           - ``boolean``
           - .. code-block:: none

                Do not initialize device automatically on boot. Device should be manually
                initialized using device_init().



         * - ``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.



         * - ``zephyr,pm-device-runtime-auto``
           - ``boolean``
           - .. code-block:: none

                Automatically configure the device for runtime power management after the
                init function runs.



         * - ``zephyr,disabling-power-states``
           - ``phandles``
           - .. code-block:: none

                List of power states that will disable this device power.