diff --git a/drivers/timer/Kconfig b/drivers/timer/Kconfig
index 45a256a3..d012cf7 100644
--- a/drivers/timer/Kconfig
+++ b/drivers/timer/Kconfig
@@ -82,6 +82,16 @@
 	help
 	  Select this to enable Time-Stamp Counter (TSC) timer for x86.
 
+config X86_TSC_TIMER_EARLY_FREQ
+	int "x86 TSC timer frequency in MHz when used as the early timer"
+	depends on X86_TSC_TIMER
+	default 1000
+	help
+	  Sets the estimated CPU frequency in MHz when TSC is used as the
+	  early timer and the frequency can neither be calibrated via some
+	  hardware ways, nor got from device tree at the time when device
+	  tree is not available yet.
+
 config OMAP_TIMER
 	bool "Omap timer support"
 	depends on TIMER