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-rw-r--r--src/soc/intel/common/block/pmc/Kconfig7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/pmc/Kconfig b/src/soc/intel/common/block/pmc/Kconfig
index e3978e29dd52..5e5e8d618419 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