:orphan:

.. title:: CONFIG_SOC_ATMEL_SAME70_EXT_MAINCK

.. kconfig:: CONFIG_SOC_ATMEL_SAME70_EXT_MAINCK

CONFIG_SOC_ATMEL_SAME70_EXT_MAINCK
##################################

*Use external crystal oscillator for main clock*

*Use external crystal oscillator for main clock*

Type: ``bool``

Help
====

.. code-block:: none

    The main clock is being used to drive the PLL, and
    thus driving the processor clock.

    Say y if you want to use external crystal oscillator
    to drive the main clock. Note that this adds about
    a second to boot time, as the crystal needs to
    stabilize after power-up.

    The crystal used here can be from 3 to 20 MHz.

    Says n here will use the internal fast RC oscillator
    running at 12 MHz.

Help
====

.. code-block:: none

    The main clock is being used to drive the PLL, and
    thus driving the processor clock.

    Say y if you want to use external crystal oscillator
    to drive the main clock. Note that this adds about
    a second to boot time, as the crystal needs to
    stabilize after power-up.

    The crystal used here can be from 3 to 20 MHz.

    Says n here will use the internal fast RC oscillator
    running at 12 MHz.

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

(\ :kconfig:`SOC_SERIES_SAME70 <CONFIG_SOC_SERIES_SAME70>` && \ :kconfig:`SOC_FAMILY_SAM <CONFIG_SOC_FAMILY_SAM>`) || (\ :kconfig:`SOC_SERIES_SAME70 <CONFIG_SOC_SERIES_SAME70>` && \ :kconfig:`SOC_FAMILY_SAM <CONFIG_SOC_FAMILY_SAM>`)

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

Defaults
========

No defaults. Implicitly defaults to ``n``.

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



At ``<Zephyr SoC>/arm/atmel_sam/same70/Kconfig.soc:91``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:38`` → ``<Zephyr SoC>/Kconfig:15`` → ``<BuildDir>/kconfig/Kconfig.soc.arch:2`` → ``<Zephyr SoC>/arm/atmel_sam/Kconfig:17``

Menu path: (Top) → Hardware Configuration

.. code-block:: kconfig

    config SOC_ATMEL_SAME70_EXT_MAINCK
    	bool "Use external crystal oscillator for main clock"
    	depends on SOC_SERIES_SAME70 && SOC_FAMILY_SAM
    	help
    	  The main clock is being used to drive the PLL, and
    	  thus driving the processor clock.
	  
    	  Say y if you want to use external crystal oscillator
    	  to drive the main clock. Note that this adds about
    	  a second to boot time, as the crystal needs to
    	  stabilize after power-up.
	  
    	  The crystal used here can be from 3 to 20 MHz.
	  
    	  Says n here will use the internal fast RC oscillator
    	  running at 12 MHz.

----

At ``<Zephyr SoC>/arm/atmel_sam/same70/Kconfig.soc:91``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:38`` → ``<Zephyr SoC>/Kconfig:18`` → ``<Zephyr SoC>/arm/atmel_sam/Kconfig:17``

Menu path: (Top) → Hardware Configuration

.. code-block:: kconfig

    config SOC_ATMEL_SAME70_EXT_MAINCK
    	bool "Use external crystal oscillator for main clock"
    	depends on SOC_SERIES_SAME70 && SOC_FAMILY_SAM
    	help
    	  The main clock is being used to drive the PLL, and
    	  thus driving the processor clock.
	  
    	  Say y if you want to use external crystal oscillator
    	  to drive the main clock. Note that this adds about
    	  a second to boot time, as the crystal needs to
    	  stabilize after power-up.
	  
    	  The crystal used here can be from 3 to 20 MHz.
	  
    	  Says n here will use the internal fast RC oscillator
    	  running at 12 MHz.

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