ITE IT8XXX2 Pin Controller 바인딩

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.. dtcompatible:: ite,it8xxx2-pinctrl
.. _dtbinding_ite_it8xxx2_pinctrl:

ite,it8xxx2-pinctrl
###################

Vendor: :ref:`ITE Tech. Inc. <dt_vendor_ite>`

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



.. code-block:: none

   The ITE IT8XXX2 pin controller is a node responsible for controlling
   pin function selection and pin properties. For example, you can
   use this node to route UART1 RX and TX setting the alternate
   function on the pin.

   The node has the 'pinctrl' node label set in your SoC's devicetree,
   so you can modify it like this:

     &pinctrl {
             /* your modifications go here */
     };

   All device pin configurations should be placed in child nodes of the
   'pinctrl' node, as shown in this example:

     /* You can put this in places like a board-pinctrl.dtsi file in
      * your board directory, or a devicetree overlay in your application.
      */

     /* include pre-defined pins and functions for the SoC used by the board */
     #include <dt-bindings/pinctrl/it8xxx2-pinctrl.h>

     &pinctrl {
       /* configuration for I2C0 default state */
       i2c0_clk_pb3_default: i2c0_clk_pb3_default {
               pinmuxs = <&pinctrlb 3 IT8XXX2_ALT_FUNC_1>;
               gpio-voltage = "1p8";
       };
       i2c0_data_pb4_default: i2c0_data_pb4_default {
               pinmuxs = <&pinctrlb 4 IT8XXX2_ALT_FUNC_1>;
               gpio-voltage = "1v8";
       };
       /* configuration for UART0 default state */
       uart1_rx_pb0_default: uart1_rx_pb0_default {
               pinmuxs = <&pinctrlb 0 IT8XXX2_ALT_FUNC_3>;
               bias-pull-up;
       };
       uart1_tx_pb1_default: uart1_tx_pb1_default {
               pinmuxs = <&pinctrlb 1 IT8XXX2_ALT_FUNC_3>;
       };
     };

   The 'uart1_rx_pb0_default' child node encodes the pin configurations
   for a particular state of a device; in this case, the default
   (that is, active) state.

   To link pin configurations with a device, use a pinctrl-N property for some
   number N, like this example you could place in your board's DTS file:

     #include "board-pinctrl.dtsi"

     &uart0 {
       pinctrl-0 = <&uart1_rx_pb0_default &uart1_tx_pb1_default>;
       pinctrl-1 = <&uart1_rx_pb0_sleep &uart1_tx_pb1_sleep>;
       pinctrl-names = "default", "sleep";
     };

Properties
**********

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


These property descriptions apply to "ite,it8xxx2-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 "ite,it8xxx2-pinctrl" compatible.

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

         * - Name
           - Type
           - Details

         * - ``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.



         * - ``power-domain``
           - ``phandle``
           - .. code-block:: none


                Power domain the device belongs to.

                The device will be notified when the power domain it belongs to is either
                suspended or resumed.



         * - ``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.



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

                register space


             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.

             This property is **deprecated**.

         * - ``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


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

                mailbox / IPM channels specifiers


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

                Provided names of mailbox / IPM channel specifiers


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

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






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

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

   * - Name
     - Type
     - Details

   * - ``bias-high-impedance``
     - ``boolean``
     - .. code-block:: none

          high impedance mode ("third-state", "floating")


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

          enable pull-up resistor


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

          enable pull-down resistor


   * - ``bias-pull-pin-default``
     - ``boolean``
     - .. code-block:: none

          use pin's default pull state


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

          drive actively high and low


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

          drive with open drain (hardware AND)


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

          enable input on pin (e.g. enable an input buffer, no effect on output)



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

          ITE IT8XXX2 pin's configuration (pinctrl node, pin and function).



       This property is **required**.

   * - ``gpio-voltage``
     - ``string``
     - .. code-block:: none

          Pin input voltage selection 3.3V or 1.8V. All gpio pins support 3.3V.
          This property only needs to be configured if the board specifies a
          pin as 1.8V. So the default is 3.3V.
          kSI[7:0] and KSO[15:0] pins only support 3.3V.



       Default value: ``3v3``

       Legal values: ``'3v3'``, ``'1v8'``

   * - ``drive-strength``
     - ``string``
     - .. code-block:: none

          We can configure this property to drive a high or low current selection.
          If this property is not configured, it is the default setting.
          According to the SPEC, the default drive current selection varies from
          different pins.
          Define the high level 0b: 8mA
                     low  level 1b: 4mA or 2mA



       Legal values: ``'high'``, ``'low'``