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.. dtcompatible:: arm,dma-pl330
.. _dtbinding_arm_dma_pl330:

arm,dma-pl330
#############

Vendor: :ref:`ARM Ltd. <dt_vendor_arm>`

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

These nodes are "dma" bus nodes.

.. code-block:: none

   PL330 DMA Controller

   A phandle to the DMA controller plus "channel" integer cell specifying
   channel to be used for data transfer

   Example for pl330 DMA Controller
      pl330: pl330@48300000 {
                   compatible = "arm,dma-pl330";
                   ...
                   dma-channels = <8>;
                   #dma-cells = <1>;
                   label = "PL330";
             };

   If PCIe EP client uses channel 0 for Tx DMA and channel 1 for Rx DMA
      pcie0_ep: pcie@4e100000 {
                   compatible = "brcm,iproc-pcie-ep";
                   ...
                   dmas = <&pl330 0>, <&pl330 1>;
                   dma-names = "txdma", "rxdma";
                   label = "PCIE_0";
             };

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

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

                microcode's physical memory address


             This property is **required**.

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

                Number of items to expect in a DMA specifier


             This property is **required**.

             Constant value: ``1``

         * - ``dma-channel-mask``
           - ``int``
           - .. code-block:: none

                Bitmask of available DMA channels in ascending order that are
                not reserved by firmware and are available to the
                kernel. i.e. first channel corresponds to LSB.



         * - ``dma-channels``
           - ``int``
           - .. code-block:: none

                Number of DMA channels supported by the controller


         * - ``dma-requests``
           - ``int``
           - .. code-block:: none

                Number of DMA request signals supported by the 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 "arm,dma-pl330" 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:`zephyr:dt-important-props` for more information.

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

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


             This property is **required**.

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

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

                compatible strings


             This property is **required**.

             See :ref:`zephyr: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:`zephyr: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


         * - ``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


         * - ``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.






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

- dma cells: channel