:orphan:
.. raw:: html
.. dtcompatible:: microchip,xec-espi-host-dev
.. _dtbinding_microchip_xec_espi_host_dev:
microchip,xec-espi-host-dev (on espi bus)
#########################################
Vendor: :ref:`Microchip Technology Inc. `
Description
***********
.. code-block:: none
Microchip XEC eSPI Host devices
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
* - ``ldn``
- ``int``
- .. code-block:: none
logical device number
This property is **required**.
* - ``girqs``
- ``array``
- .. code-block:: none
array of GIRQ and bit positions
* - ``pcrs``
- ``array``
- .. code-block:: none
PCR sleep register index and bit position
* - ``host-io``
- ``int``
- .. code-block:: none
Logical device Host I/O (x86) base. Refer to SoC documentation for the
number of I/O decoders implemented by a device (1 or 2) and the fixed
I/O masks.
* - ``host-io-addr-mask``
- ``int``
- .. code-block:: none
Host I/O address mask. This value is fixed for all HW and is only
used by Port80 BIOS debug alias device to specify the byte lane the
alias address is mapped to in the 80h to 83h I/O range.
* - ``host-mem``
- ``int``
- .. code-block:: none
Logical device Host memory (x86) base address. Refer to SoC
documentation for which logical devices implement a memory decoder
and the fixed memory address masking.
* - ``emi-mems``
- ``array``
- .. code-block:: none
Each EMI host device supports Host access to two SoC data memory
regions. Each region requires three configuration parameters:
Base address in the SoC data memory, read limit, and write limit.
If bits[14:2] of the address written by the Host to the EC address
register is less than the limit value the access is allowed. Bit[15]
of the EC address selects which of the two memory regions is accessed.
* - ``emi-mem-cells``
- ``int``
- Constant value: ``3``
.. 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 "microchip,xec-espi-host-dev" 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.
* - ``interrupts``
- ``array``
- .. code-block:: none
interrupts for device
See :ref:`zephyr:dt-important-props` for more information.
* - ``interrupt-names``
- ``string-array``
- .. code-block:: none
name of each interrupt
* - ``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-extended``
- ``compound``
- .. code-block:: none
extended interrupt specifier for device
* - ``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:`zephyr: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
* - ``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
********************
- emi-mem cells: base, rdlimit, wrlimit