1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h
index 235be70d5bb4..94605c0e9cee 100644
--- a/arch/x86/include/asm/tsc.h
+++ b/arch/x86/include/asm/tsc.h
@@ -65,4 +65,7 @@ extern int notsc_setup(char *);
 extern void tsc_save_sched_clock_state(void);
 extern void tsc_restore_sched_clock_state(void);
 
+/* MSR based TSC calibration for Intel Atom SoC platforms */
+unsigned long try_msr_calibrate_tsc(void);
+
 #endif /* _ASM_X86_TSC_H */