:orphan:

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.. dtcompatible:: renesas,rz-gpio
.. _dtbinding_renesas_rz_gpio:

renesas,rz-gpio
###############

Vendor: :ref:`Renesas Electronics Corporation <dt_vendor_renesas>`

.. note::

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

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



.. code-block:: none

   Reneses RZ  GPIO controller node.
   Sample of usage:
     gpio-consumer{
           out-gpio = <&gpio8 2 (GPIO_PULL_UP);
         };
     &gpio8{
           irq = <2 10>, <9 1>;
           status = "okay";
         };
   Example above will configure pin 2 port 8:
   - Using interrupt TINT10
   - Set Pullup

Properties
**********

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


These property descriptions apply to "renesas,rz-gpio"
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.

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

         * - Name
           - Type
           - Details

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

                pin-irq pairs


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

                Number of items to expect in a GPIO specifier


             This property is **required**.

             Constant value: ``2``

         * - ``gpio-controller``
           - ``boolean``
           - .. code-block:: none

                Convey's this node is a GPIO controller


             This property is **required**.

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

                This property indicates the number of in-use slots of available slots
                for GPIOs. The typical example is something like this: the hardware
                register is 32 bits wide, but only 18 of the bits have a physical
                counterpart. The driver is generally written so that all 32 bits can
                be used, but the IP block is reused in a lot of designs, some using
                all 32 bits, some using 18 and some using 12. In this case, setting
                "ngpios = <18>;" informs the driver that only the first 18 GPIOs, at
                local offset 0 .. 17, are in use.  For cases in which there might be
                holes in the slot range, this value should be the max slot number+1.



             Default value: ``32``

         * - ``gpio-reserved-ranges``
           - ``array``
           - .. code-block:: none

                If not all the GPIOs at offsets 0...N-1 are usable for ngpios = <N>, then
                this property contains an additional set of tuples which specify which GPIOs
                are unusable. This property indicates the start and size of the GPIOs
                that can't be used.

                For example, setting "gpio-reserved-ranges = <3 2>, <10 1>;" means that
                GPIO offsets 3, 4, and 10 are not usable, even if ngpios = <18>.



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

                This is an array of strings defining the names of the GPIO lines
                going out of the GPIO controller





   .. 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 "renesas,rz-gpio" compatible.

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

         * - Name
           - Type
           - Details

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

                GPIO port number


             This property is **required**.

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

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

                Indicates the operational status of the hardware or other
                resource that the node represents. In particular:

                  - "okay" means the resource is operational and, for example,
                    can be used by device drivers
                  - "disabled" means the resource is not operational and the system
                    should treat it as if it is not present

                For details, see "2.3.4 status" in Devicetree Specification v0.4.



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

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

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

                Human readable string describing the device. Use of this property is
                deprecated except as needed on a case-by-case basis.

                For details, see "4.1.2 Miscellaneous Properties" in Devicetree
                Specification v0.4.



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




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

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

   * - Name
     - Type
     - Details

   * - ``gpio-hog``
     - ``boolean``
     - .. code-block:: none

          Conveys this node is a GPIO hog.



       This property is **required**.

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

          This is an array of GPIO specifiers (e.g. pin, flags) to be hogged. The number of array
          entries must be an integer multiple of the number of GPIO specifier cells for the parent
          GPIO controller.



       This property is **required**.

   * - ``input``
     - ``boolean``
     - .. code-block:: none

          If this property is set, the GPIO is configured as an input. This property takes
          precedence over the output-low and output-high properties.



   * - ``output-low``
     - ``boolean``
     - .. code-block:: none

          If this property is set, the GPIO is configured as an output set to logical low. This
          property takes precedence over the output-high property.



   * - ``output-high``
     - ``boolean``
     - .. code-block:: none

          If this property is set, the GPIO is configured as an output set to logical high.



   * - ``line-name``
     - ``string``
     - .. code-block:: none

          Optional GPIO line name.



Specifier cell names
********************

- gpio cells: pin, flags