:orphan:

.. _st_stm32_pinctrl:

st,stm32-pinctrl
################

Vendor: :ref:`STMicroelectronics <dt_vendor_st>`

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



.. code-block:: none

   STM32 Pin controller Node

Properties
**********

Top level properties
====================


These property descriptions apply to "st,stm32-pinctrl"
nodes themselves. This page also describes child node
properties in the following sections.

.. tabs::

   .. group-tab:: Node specific properties

      Properties not inherited from the base binding file.

      (None)

   .. 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-pinctrl" 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.

         * - ``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``
           - ``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


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

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


             See :ref:`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





Child node properties
=====================

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

   * - Name
     - Type
     - Details

   * - ``pinmux``
     - ``int``
     - .. code-block:: none

          Reused from https://github.com/torvalds/linux/blob/master/Documentation/devicetree/bindings/pinctrl/st,stm32-pinctrl.yaml
          Integer array, represents gpio pin number and mux setting.
          These defines are calculated as: ((port * 16 + line) << 8) | function
          With:
          - port: The gpio port index (PA = 0, PB = 1, ..., PK = 11)
          - line: The line offset within the port (PA0 = 0, PA1 = 1, ..., PA15 = 15)
          - function: The function number, can be:
          * 0 : Alternate Function 0
          * 1 : Alternate Function 1
          * 2 : Alternate Function 2
          * ...
          * 15 : Alternate Function 15
          * 16 : Analog
          To simplify the usage, macro is available to generate "pinmux" field.
          This macro is available here:
            -include/dt-bindings/pinctrl/stm32-pinctrl-common.h
          Some examples of macro usage:
             GPIO A9 set as alernate function 2
          ... {
                   pinmux = <STM32_PINMUX('A', 9, AF2)>;
          };
             GPIO A9 set as analog
          ... {
                   pinmux = <STM32_PINMUX('A', 9, ANALOG)>;
          };



       This property is **required**.

   * - ``bias-disable``
     - ``boolean``
     - .. code-block:: none

          Pin bias (push-pull) disabled. This is the default pin configuration and will be applied if no bias- property is set.


   * - ``bias-pull-down``
     - ``boolean``
     - .. code-block:: none

          Pull down on pin.


   * - ``bias-pull-up``
     - ``boolean``
     - .. code-block:: none

          Pull up on pin.


   * - ``drive-push-pull``
     - ``boolean``
     - .. code-block:: none

          Pin driven actively high and low. This is the default pin configuration and will be applied if no drive- property is set.


   * - ``drive-open-drain``
     - ``boolean``
     - .. code-block:: none

          Pin driven in open drain.


   * - ``slew-rate``
     - ``string``
     - .. code-block:: none

          Pin speed. Default to low-speed. For few pins (PA11 and PB3 depending on SoCs)hardware reset value could differ (very-high-speed). Carefully check reference manual for these pins.


       Default value: ``low-speed``

       Legal values: ``'low-speed'``, ``'medium-speed'``, ``'high-speed'``, ``'very-high-speed'``