CONFIG_APIC_TIMER_TSC_N

TSC to local APIC timer frequency multiplier (N)

Type: int

Direct dependencies

(APIC_TIMER_TSC && APIC_TIMER && SOC_APOLLO_LAKE) || (APIC_TIMER_TSC && APIC_TIMER && SOC_ELKHART_LAKE) || (APIC_TIMER_TSC && APIC_TIMER)

(Includes any dependencies from ifs and menus.)

Defaults

• 249

• 249

• 1

Kconfig definitions

At <Zephyr>/soc/x86/apollo_lake/Kconfig.defconfig:37

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:19 → <BuildDir>/Kconfig/Kconfig.soc.defconfig:1

Menu path: (Top)

config APIC_TIMER_TSC_N
    int
    default 249
    depends on APIC_TIMER_TSC && APIC_TIMER && SOC_APOLLO_LAKE

---

At <Zephyr>/soc/x86/elkhart_lake/Kconfig.defconfig:37

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:19 → <BuildDir>/Kconfig/Kconfig.soc.defconfig:1

Menu path: (Top)

config APIC_TIMER_TSC_N
    int
    default 249
    depends on APIC_TIMER_TSC && APIC_TIMER && SOC_ELKHART_LAKE

---

At <Zephyr>/drivers/timer/Kconfig:42

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

Menu path: (Top) → Device Drivers → Timer Drivers → New local APIC timer → Use invariant TSC for z_timer_cycle_get_32()

config APIC_TIMER_TSC_N
    int "TSC to local APIC timer frequency multiplier (N)"
    default 1
    depends on APIC_TIMER_TSC && APIC_TIMER

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