diff --git a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
index 9d037cad6b..451c5dd5f2 100644
--- a/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
+++ b/src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
@@ -98,30 +98,19 @@ chip soc/intel/elkhartlake
 
 	# LPSS Serial IO (I2C/UART/GSPI) related UPDs
 	register "SerialIoI2cMode" = "{
-		[PchSerialIoIndexI2C0] = PchSerialIoDisabled,
-		[PchSerialIoIndexI2C1] = PchSerialIoPci,
-		[PchSerialIoIndexI2C2] = PchSerialIoDisabled,
-		[PchSerialIoIndexI2C3] = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C0] = PchSerialIoPci,
+		[PchSerialIoIndexI2C1] = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C2] = PchSerialIoPci,
+		[PchSerialIoIndexI2C3] = PchSerialIoPci,
 		[PchSerialIoIndexI2C4] = PchSerialIoPci,
 		[PchSerialIoIndexI2C5] = PchSerialIoDisabled,
 		[PchSerialIoIndexI2C6] = PchSerialIoDisabled,
 		[PchSerialIoIndexI2C7] = PchSerialIoDisabled,
 	}"
 
-	register "SerialIoI2cPadsTermination" = "{
-		[PchSerialIoIndexI2C0] = 1,
-		[PchSerialIoIndexI2C1] = 1,
-		[PchSerialIoIndexI2C2] = 1,
-		[PchSerialIoIndexI2C3] = 1,
-		[PchSerialIoIndexI2C4] = 1,
-		[PchSerialIoIndexI2C5] = 1,
-		[PchSerialIoIndexI2C6] = 1,
-		[PchSerialIoIndexI2C7] = 1,
-	}"
-
 	register "SerialIoUartMode" = "{
-		[PchSerialIoIndexUART0] = PchSerialIoDisabled,
-		[PchSerialIoIndexUART1] = PchSerialIoDisabled,
+		[PchSerialIoIndexUART0] = PchSerialIoPci,
+		[PchSerialIoIndexUART1] = PchSerialIoPci,
 		[PchSerialIoIndexUART2] = PchSerialIoSkipInit,
 	}"