diff --git a/src/soc/intel/baytrail/acpi/lpc.asl b/src/soc/intel/baytrail/acpi/lpc.asl
index 24fa9c7b5d..408d2b420f 100644
--- a/src/soc/intel/baytrail/acpi/lpc.asl
+++ b/src/soc/intel/baytrail/acpi/lpc.asl
@@ -138,6 +138,9 @@ Device (LPCB)
 		})
 	}
 
+	// Include mainboard's superio.asl file.
+	#include "acpi/superio.asl"
+
 #ifdef ENABLE_TPM
 	Device (TPM)		// Trusted Platform Module
 	{