diff --git a/src/mainboard/purism/librem13v2/devicetree.cb b/src/mainboard/purism/librem13v2/devicetree.cb
index 0defea089e..f345c09f38 100644
--- a/src/mainboard/purism/librem13v2/devicetree.cb
+++ b/src/mainboard/purism/librem13v2/devicetree.cb
@@ -165,30 +165,11 @@ chip soc/intel/skylake
 	register "usb3_ports[1]" = "USB3_PORT_DEFAULT(OC_SKIP)"	# Type-A Port (right)
 	register "usb3_ports[2]" = "USB3_PORT_DEFAULT(OC_SKIP)"	# Type-C Port
 
-	register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8"  # I2C4 is 1.8V
+	# PL2 override 25W
+	register "tdp_pl2_override" = "25"
 
-	# Must leave UART0 enabled or SD/eMMC will not work as PCI
-	register "SerialIoDevMode" = "{
-		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
-		[PchSerialIoIndexI2C1]  = PchSerialIoPci,
-		[PchSerialIoIndexI2C2]  = PchSerialIoDisabled,
-		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
-		[PchSerialIoIndexI2C4]  = PchSerialIoPci,
-		[PchSerialIoIndexI2C5]  = PchSerialIoDisabled,
-		[PchSerialIoIndexSpi0]  = PchSerialIoDisabled,
-		[PchSerialIoIndexSpi1]  = PchSerialIoDisabled,
-		[PchSerialIoIndexUart0] = PchSerialIoPci,
-		[PchSerialIoIndexUart1] = PchSerialIoDisabled,
-		[PchSerialIoIndexUart2] = PchSerialIoSkipInit,
-	}"
-
-	# PL2 override 15W
-	register "tdp_pl2_override" = "15"
-
-	register "tcc_offset" = "10"     # TCC of 90C
-
-	# Send an extra VR mailbox command for the supported MPS IMVP8 model
-	register "SendVrMbxCmd" = "1"
+	# Send an extra VR mailbox command for the PS4 exit issue
+	register "SendVrMbxCmd" = "2"
 
 	device cpu_cluster 0 on
 		device lapic 0 on end