diff --git a/src/mainboard/google/sarien/variants/arcada/devicetree.cb b/src/mainboard/google/sarien/variants/arcada/devicetree.cb
index 4efaf55191..a47a53d4e0 100644
--- a/src/mainboard/google/sarien/variants/arcada/devicetree.cb
+++ b/src/mainboard/google/sarien/variants/arcada/devicetree.cb
@@ -100,6 +100,7 @@ chip soc/intel/cannonlake
 
 	# PCIe port 11 for card reader
 	register "PcieRpEnable[10]" = "1"
+	register "PcieRpLtrEnable[10]" = "1"
 	register "PcieClkSrcUsage[1]" = "10"
 	register "PcieClkSrcClkReq[1]" = "1"
 
diff --git a/src/mainboard/google/sarien/variants/sarien/devicetree.cb b/src/mainboard/google/sarien/variants/sarien/devicetree.cb
index 85d4f9def9..d3d26f9800 100644
--- a/src/mainboard/google/sarien/variants/sarien/devicetree.cb
+++ b/src/mainboard/google/sarien/variants/sarien/devicetree.cb
@@ -99,6 +99,7 @@ chip soc/intel/cannonlake
 
 	# PCIe port 8 for Card Reader
 	register "PcieRpEnable[7]" = "1"
+	register "PcieRpLtrEnable[7]" = "1"
 	register "PcieClkSrcUsage[4]" = "7"
 	register "PcieClkSrcClkReq[4]" = "4"