ST STMPE811 Touchscreen Controller 바인딩

:orphan:

.. raw:: html

    <!--
    FIXME: do not limit page width until content uses another representation
    format other than tables
    -->
    <style>.wy-nav-content { max-width: none; !important }</style>

.. dtcompatible:: st,stmpe811
.. _dtbinding_st_stmpe811:

st,stmpe811 (on i2c bus)
########################

Vendor: :ref:`STMicroelectronics <dt_vendor_st>`

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



.. code-block:: none

   STMPE811 I2C touchscreen 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

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

                GPIO specifier that controls power to the device.

                This property should be provided when the device has a dedicated
                switch that controls power to the device.  The supply state is
                entirely the responsibility of the device driver.

                Contrast with vin-supply.



         * - ``vin-supply``
           - ``phandle``
           - .. code-block:: none

                Reference to the regulator that controls power to the device.
                The referenced devicetree node must have a regulator compatible.

                This property should be provided when device power is supplied
                by a shared regulator.  The supply state is dependent on the
                request status of all devices fed by the regulator.

                Contrast with supply-gpios.  If both properties are provided
                then the regulator must be requested before the supply GPIOS is
                set to an active state, and the supply GPIOS must be set to an
                inactive state before releasing the regulator.



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

                Interrupt GPIO. Used by the controller to signal touch data is
                available. Active low.



         * - ``screen-width``
           - ``int``
           - .. code-block:: none

                Screen width for scaling the reported coordinates.
                Default: raw touchscreen resolution.



         * - ``screen-height``
           - ``int``
           - .. code-block:: none

                Screen height for scaling the reported coordinates.
                Default: raw touchscreen resolution.



         * - ``raw-x-min``
           - ``int``
           - .. code-block:: none

                Signed raw X axis start for scaling the reported coordinates.
                No effect if screen size is not set.



         * - ``raw-y-min``
           - ``int``
           - .. code-block:: none

                Signed raw Y axis start for scaling the reported coordinates.
                No effect if screen size is not set.



         * - ``raw-x-max``
           - ``int``
           - .. code-block:: none

                Raw X axis end for scaling the reported coordinates.
                No effect if screen size is not set.



         * - ``raw-y-max``
           - ``int``
           - .. code-block:: none

                Raw Y axis end for scaling the reported coordinates.
                No effect if screen size is not set.



         * - ``panel-driver-settling-time-us``
           - ``int``
           - .. code-block:: none

                Panel driver settling time (microseconds). For large panels (> 6"), a capacitor of 10 nF
                is recommended at the touchscreen terminals for noise filtering.
                As a general rule, 1-5 nF capacitors require around 500 us settling time, and 5-10 nF need
                around 1 ms. When a larger capacitor is used, this value should be changed, as it can
                lead to inaccuracy of the measurement.



             This property is **required**.

             Legal values: ``10``, ``100``, ``500``, ``1000``, ``5000``, ``10000``, ``50000``, ``100000``

         * - ``touch-detect-delay-us``
           - ``int``
           - .. code-block:: none

                Touch detect delay (microseconds) is the delay from the activation of the pull-up resistor
                in the X+ line to the time the device performs touch detection.
                If no capacitor, or a smaller capacitor is used, this value can be lowered to
                minimize detection latency, but it could lower the position stability.



             This property is **required**.

             Legal values: ``10``, ``50``, ``100``, ``500``, ``1000``, ``5000``, ``10000``, ``50000``

         * - ``touch-average-control``
           - ``int``
           - .. code-block:: none

                Average control (number of samples).
                This parameter can be set to any of the possible values.
                Higher values result in more filtering of noise, but also introduce
                more latency in the touch detection process.

                Use cases that require low touch detection latency
                may benefit from using a lower value for this parameter,
                at the cost of less noise filtering.



             This property is **required**.

             Legal values: ``1``, ``2``, ``4``, ``8``

         * - ``tracking-index``
           - ``int``
           - .. code-block:: none

                Tracking index determines the minimal distance between
                the current touch position and the previous touch position.
                If the distance is shorter than the tracking index, it is discarded.
                Lowering the tracking index increases the frequency of touch events,
                but also increases the load on the system.



             This property is **required**.

             Legal values: ``0``, ``4``, ``8``, ``16``, ``32``, ``64``, ``92``, ``127``



   .. 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,stmpe811" 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

                device address on i2c bus


             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.

             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().