CONFIG_SOC_ATMEL_SAM3X_EXT_MAINCK¶

Atmel SAM3 to use external crystal oscillator for main clock

Type: bool

Help¶

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

Says 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¶

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

Says 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¶

(SOC_SERIES_SAM3X && SOC_FAMILY_SAM) || (SOC_SERIES_SAM3X && 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/sam3x/Kconfig.soc:38

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

config SOC_ATMEL_SAM3X_EXT_MAINCK
    bool "Atmel SAM3 to use external crystal oscillator for main clock"
    depends on SOC_SERIES_SAM3X && SOC_FAMILY_SAM
    help
      The main clock is being used to drive the PLL, and
      thus driving the processor clock.

      Says 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/sam3x/Kconfig.soc:38

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

Menu path: (Top) → Hardware Configuration

config SOC_ATMEL_SAM3X_EXT_MAINCK
    bool "Atmel SAM3 to use external crystal oscillator for main clock"
    depends on SOC_SERIES_SAM3X && SOC_FAMILY_SAM
    help
      The main clock is being used to drive the PLL, and
      thus driving the processor clock.

      Says 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.)