diff --git a/src/soc/intel/common/block/pmc/Kconfig b/src/soc/intel/common/block/pmc/Kconfig index e3978e29dd..5e5e8d6184 100644 --- a/src/soc/intel/common/block/pmc/Kconfig +++ b/src/soc/intel/common/block/pmc/Kconfig @@ -76,4 +76,11 @@ config USE_PM_ACPI_TIMER Disabling this option also stops the hardware TCO timer and makes the TCO watchdog unavailable. + Note: On platforms without uCode PM Timer emulation, legacy OSes + or payloads with ACPI version < 5.0A might not work without + PM ACPI timer. + + (Legacy) software requiring `TMR_STS` (for timer overflow + interrupts) will not work with this option disabled. + endif # PM_ACPI_TIMER_OPTIONAL