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.. dtcompatible:: st,stm32-i2c-v2
.. _dtbinding_st_stm32_i2c_v2:

st,stm32-i2c-v2
###############

Vendor: :ref:`STMicroelectronics <dt_vendor_st>`

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

These nodes are "i2c" bus nodes.

.. code-block:: none

   STM32 I2C V2 controller

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

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

                GPIO pin configuration for serial signals (SDA, SCL).  We expect
                that the phandles will reference pinctrl nodes.

                For example the I2C1 would be
                   pinctrl-0 = <&i2c1_sda_pb11 &i2c1_scl_pb10>;



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

                An optional table of pre-computed i2c timing values with the
                matching clock configuration.

                Precise timings values for a given Hardware can be pre-computed
                with a tool like STM32CubeMX or directly from I2C_TIMINGR register
                description.

                Because timing value is valid for a given I2C peripheral clock
                frequency and target I2C bus clock, each timing value must be
                provided with the matching configuration.

                The resulting table entries should look like <periph_clock
                clock-frequency timing>

                For example timings could be defined as

                    timings = <64000000 I2C_BITRATE_STANDARD 0x10707DBC>,
                              <64000000 I2C_BITRATE_FAST 0x00603D56>,
                              <56000000 I2C_BITRATE_STANDARD 0x10606DA4>,
                              <56000000 I2C_BITRATE_FAST 0x00501D63>;



         * - ``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 "st,stm32-i2c-v2" 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: ``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:`zephyr: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:`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


         * - ``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


         * - ``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.