:orphan:

.. title:: UART_NS16550_ACCESS_WORD_ONLY

.. option:: CONFIG_UART_NS16550_ACCESS_WORD_ONLY

*NS16550 only allows word access*

Type: ``bool``

Help
====

.. code-block:: none

    In some case, e.g. ARC HS Development kit, the peripheral space of ns
    16550 (DesignWare UART) only allows word access, byte access will raise
    exception.

Direct dependencies
===================

(\ :option:`UART_NS16550 <CONFIG_UART_NS16550>` && \ :option:`SOC_ARC_HSDK <CONFIG_SOC_ARC_HSDK>`) || (\ :option:`UART_NS16550 <CONFIG_UART_NS16550>` && \ :option:`SERIAL <CONFIG_SERIAL>`)

*(Includes any dependencies from ifs and menus.)*

Default
=======

- y

Kconfig definitions
===================



At ``<Zephyr SoC>/arc/snps_arc_hsdk/Kconfig.defconfig:46``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:19`` → ``<BuildDir>/kconfig/Kconfig.soc.defconfig:1``

Menu path: (Top)

.. code-block:: kconfig

    config UART_NS16550_ACCESS_WORD_ONLY
    	bool
    	default y
    	depends on UART_NS16550 && SOC_ARC_HSDK

----

At ``<Zephyr Driver>/serial/Kconfig.ns16550:37``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:32`` → ``<Zephyr Driver>/Kconfig:24`` → ``<Zephyr Driver>/serial/Kconfig:67``

Menu path: (Top) → Device Drivers → Serial Drivers → NS16550 serial driver

.. code-block:: kconfig

    config UART_NS16550_ACCESS_WORD_ONLY
    	bool "NS16550 only allows word access"
    	depends on UART_NS16550 && SERIAL
    	help
    	  In some case, e.g. ARC HS Development kit, the peripheral space of ns
    	  16550 (DesignWare UART) only allows word access, byte access will raise
    	  exception.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*