diff --git a/src/mainboard/system76/galp5/devicetree.cb b/src/mainboard/system76/galp5/devicetree.cb
index 00830bae69..009fe73abf 100644
--- a/src/mainboard/system76/galp5/devicetree.cb
+++ b/src/mainboard/system76/galp5/devicetree.cb
@@ -69,6 +69,9 @@ chip soc/intel/tigerlake
 	# System Agent dynamic frequency support
 	register "SaGv" = "SaGv_Enabled"
 
+	# Enable SMBus
+	register "SmbusEnable" = "1"
+
 	# TCSS USB3
 	register "TcssXhciEn" = "1"
 
diff --git a/src/mainboard/system76/lemp10/devicetree.cb b/src/mainboard/system76/lemp10/devicetree.cb
index 06cd037c50..cb5f4e218d 100644
--- a/src/mainboard/system76/lemp10/devicetree.cb
+++ b/src/mainboard/system76/lemp10/devicetree.cb
@@ -69,6 +69,9 @@ chip soc/intel/tigerlake
 	# System Agent dynamic frequency support
 	register "SaGv" = "SaGv_Enabled"
 
+	# Enable SMBus
+	register "SmbusEnable" = "1"
+
 	# TCSS USB3
 	register "TcssXhciEn" = "1"
 
@@ -134,14 +137,14 @@ chip soc/intel/tigerlake
 	# 9 x4 - SSD2
 
 	# PCIe clocks:
-	# 0 - SSD1
+	# 0 - SSD2 - lines mislabeled SSD1
 	# 1 - WLAN
 	# 2 - CARD
-	# 3 - SSD2
+	# 3 - SSD1 - lines mislabeled SSD2
 
-	# PCIe PEG0 x4, Clock 0 (SSD1)
-	register "PcieClkSrcUsage[0]" = "0x40"
-	register "PcieClkSrcClkReq[0]" = "0"
+	# PCIe PEG0 x4, Clock 3 (SSD1)
+	register "PcieClkSrcUsage[3]" = "0x40"
+	register "PcieClkSrcClkReq[3]" = "3"
 
 	# PCIe root port #3 x1, Clock 1 (WLAN)
 	register "PcieRpEnable[2]" = "1"
@@ -155,11 +158,11 @@ chip soc/intel/tigerlake
 	register "PcieClkSrcUsage[2]" = "5"
 	register "PcieClkSrcClkReq[2]" = "2"
 
-	# PCIe root port #9 x4, Clock 3 (SSD2)
+	# PCIe root port #9 x4, Clock 0 (SSD2)
 	register "PcieRpEnable[8]" = "1"
 	register "PcieRpLtrEnable[8]" = "1"
-	register "PcieClkSrcUsage[3]" = "8"
-	register "PcieClkSrcClkReq[3]" = "3"
+	register "PcieClkSrcUsage[0]" = "8"
+	register "PcieClkSrcClkReq[0]" = "0"
 
 	# Thermal
 	# rdmsr --bitfield 31:24 --decimal 0x1A2