Help¶

Use the “new” local APIC timer driver for the system timer. This is a replacement for the legacy local APIC timer driver which supports tickless operation, but not the Quark MVIC.

Direct dependencies¶

SOC_APOLLO_LAKE || (X86 && LOAPIC)

(Includes any dependencies from ifs and menus.)

Default¶

y if !HPET_TIMER

Symbols selected by this symbol¶

TICKLESS_CAPABLE

Kconfig definitions¶

At <Zephyr>/soc/x86/apollo_lake/Kconfig.defconfig:18

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:25 → <BuildDir>/Kconfig/Kconfig.soc.defconfig:1

Menu path: (Top)

config APIC_TIMER
    bool
    default y if !HPET_TIMER
    depends on SOC_APOLLO_LAKE

At <Zephyr>/drivers/timer/Kconfig:10

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

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

menuconfig APIC_TIMER
    bool "New local APIC timer"
    select TICKLESS_CAPABLE
    depends on X86 && LOAPIC
    help
      Use the "new" local APIC timer driver for the system timer.
      This is a replacement for the legacy local APIC timer driver
      which supports tickless operation, but not the Quark MVIC.

(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)