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.. dtcompatible:: infineon,autanalog-sar-fifo
.. _dtbinding_infineon_autanalog_sar_fifo:

infineon,autanalog-sar-fifo
###########################

.. sidebar:: Overview

   :Name: ``infineon,autanalog-sar-fifo``
   :Vendor: :ref:`Infineon Technologies <dt_vendor_infineon>`
   :Used in: :zephyr:board-catalog:`List of boards <#compatibles=infineon,autanalog-sar-fifo>` using
               this compatible

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



.. code-block:: none

   Infineon AutAnalog SAR ADC FIFO Configuration

   FIFO configuration for the Infineon AutAnalog SAR ADC.

   The AutAnalog subsystem contains a shared FIFO that can be split into up to
   8 independent buffers. ADC GPIO channels, MUX channels, and FIR filter
   outputs can each be routed to one of these FIFO buffers using the fifo-sel
   property on the respective channel or FIR node.

   A single FIFO node named "fifo" must be placed under the parent SAR ADC
   node. The FIFO has a dedicated interrupt line (autanalog_fifo) separate from
   the main AutAnalog interrupt.

   The number of entries in fifo-levels determines how the FIFO memory is
   partitioned:
     1 entry  -> SPLIT1 (single 512-word buffer)
     2 entries -> SPLIT2 (two 256-word buffers)
     4 entries -> SPLIT4 (four 128-word buffers)
     8 entries -> SPLIT8 (eight 64-word buffers)

   A watermark interrupt is automatically enabled for each buffer whose
   fifo-levels entry is non-zero.

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

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

                Array of FIFO buffer level thresholds. The length of this array
                determines the FIFO split configuration:
                  1 entry  -> single 512-word buffer
                  2 entries -> two 256-word buffers
                  4 entries -> four 128-word buffers
                  8 entries -> eight 64-word buffers

                When the number of words in a buffer reaches its level threshold,
                a FIFO level interrupt is generated. Buffers with a threshold of 0
                do not generate watermark interrupts. Valid threshold range depends
                on the resulting buffer size.



             This property is **required**.



   .. 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 "infineon,autanalog-sar-fifo" compatible.

      (None)