diff --git a/src/mainboard/google/rambi/devicetree.cb b/src/mainboard/google/rambi/devicetree.cb
index 1d83c91d78..79a2d229c0 100644
--- a/src/mainboard/google/rambi/devicetree.cb
+++ b/src/mainboard/google/rambi/devicetree.cb
@@ -33,6 +33,7 @@ chip soc/intel/baytrail
 
 	# Enable devices in ACPI mode
 	register "scc_acpi_mode" = "1"
+	register "lpss_acpi_mode" = "1"
 
 	# Enable PIPEA as DP_C
 	register "gpu_pipea_hotplug" = "6"		# 6ms Pulse