diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index d4b16c0..84425cc 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -95,6 +95,7 @@
 	select USE_FSP_NOTIFY_PHASE_END_OF_FIRMWARE
 	select SOC_INTEL_COMMON_BASECODE if SOC_INTEL_CSE_LITE_SKU
 	select CR50_USE_LONG_INTERRUPT_PULSES if TPM_GOOGLE_CR50
+	select X86_CLFLUSH_CAR
 
 config MAX_CPUS
 	int