:orphan:

.. title:: SYS_CLOCK_EXISTS

.. option:: CONFIG_SYS_CLOCK_EXISTS

*System clock exists and is enabled*

Type: ``bool``

Help
====

.. code-block:: none

    This option specifies that the kernel lacks timer support.
    Some device configurations can eliminate significant code if
    this is disabled.  Obviously timeout-related APIs will not
    work.

Default
=======

- y

Kconfig definition
==================



At ``<Zephyr Kernel>/Kconfig:588``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:30``

Menu path: (Top) → General Kernel Options

.. code-block:: kconfig

    config SYS_CLOCK_EXISTS
    	bool "System clock exists and is enabled"
    	default y
    	help
    	  This option specifies that the kernel lacks timer support.
    	  Some device configurations can eliminate significant code if
    	  this is disabled.  Obviously timeout-related APIs will not
    	  work.

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