:orphan:

.. title:: HPET_TIMER

.. option:: CONFIG_HPET_TIMER

*HPET timer*

Type: ``bool``

Help
====

.. code-block:: none

    This option selects High Precision Event Timer (HPET) as a
    system timer.

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

\ :option:`BOARD_EHL_CRB <CONFIG_BOARD_EHL_CRB>` || \ :option:`BOARD_EHL_CRB_SBL <CONFIG_BOARD_EHL_CRB_SBL>` || \ :option:`X86 <CONFIG_X86>`

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

Default
=======

- y

Symbols selected by this symbol
===============================

- \ :option:`IOAPIC <CONFIG_IOAPIC>` if \ :option:`X86 <CONFIG_X86>`
- \ :option:`LOAPIC <CONFIG_LOAPIC>` if \ :option:`X86 <CONFIG_X86>`
- \ :option:`TICKLESS_CAPABLE <CONFIG_TICKLESS_CAPABLE>`

Symbols implied by this symbol
==============================

- \ :option:`TIMER_READS_ITS_FREQUENCY_AT_RUNTIME <CONFIG_TIMER_READS_ITS_FREQUENCY_AT_RUNTIME>`

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



At ``<Zephyr Boards>/x86/ehl_crb/Kconfig.defconfig:22``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:18``

Menu path: (Top)

.. code-block:: kconfig

    config HPET_TIMER
    	bool
    	default y
    	depends on BOARD_EHL_CRB || BOARD_EHL_CRB_SBL

----

At ``<Zephyr Driver>/timer/Kconfig:80``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:32`` → ``<Zephyr Driver>/Kconfig:28``

Menu path: (Top) → Device Drivers → Timer Drivers

.. code-block:: kconfig

    config HPET_TIMER
    	bool "HPET timer"
    	select IOAPIC if X86
    	select LOAPIC if X86
    	select TICKLESS_CAPABLE
    	imply TIMER_READS_ITS_FREQUENCY_AT_RUNTIME
    	depends on X86
    	help
    	  This option selects High Precision Event Timer (HPET) as a
    	  system timer.

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