diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig
index 6336843cd4..90c4c2c89a 100644
--- a/src/mainboard/google/rex/Kconfig
+++ b/src/mainboard/google/rex/Kconfig
@@ -12,6 +12,7 @@ config BOARD_GOOGLE_REX_COMMON
 config BOARD_GOOGLE_BASEBOARD_REX
 	def_bool n
 	select BOARD_GOOGLE_REX_COMMON
+	select DRIVERS_INTEL_PMC
 	select EC_GOOGLE_CHROMEEC
 	select EC_GOOGLE_CHROMEEC_ESPI
 	select MAINBOARD_HAS_CHROMEOS
diff --git a/src/mainboard/google/rex/dsdt.asl b/src/mainboard/google/rex/dsdt.asl
index c967f5a3ff..cf70ee3a7c 100644
--- a/src/mainboard/google/rex/dsdt.asl
+++ b/src/mainboard/google/rex/dsdt.asl
@@ -27,6 +27,7 @@ DefinitionBlock(
 		{
 			#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
 			#include <soc/intel/meteorlake/acpi/southbridge.asl>
+			#include <soc/intel/meteorlake/acpi/tcss.asl>
 		}
 	}
 
diff --git a/src/mainboard/google/rex/variants/rex0/overridetree.cb b/src/mainboard/google/rex/variants/rex0/overridetree.cb
index b3442b4dc2..417d47bf7a 100644
--- a/src/mainboard/google/rex/variants/rex0/overridetree.cb
+++ b/src/mainboard/google/rex/variants/rex0/overridetree.cb
@@ -228,6 +228,29 @@ chip soc/intel/meteorlake
 			}"
 		end	#PCIE6 WWAN card
 		device ref gspi1 on end
+		device ref soc_espi on
+			chip ec/google/chromeec
+				use conn0 as mux_conn[0]
+				use conn1 as mux_conn[1]
+				device pnp 0c09.0 on end
+			end
+		end
+		device ref pmc hidden
+			chip drivers/intel/pmc_mux
+				device generic 0 on
+					chip drivers/intel/pmc_mux/conn
+						use usb2_port2 as usb2_port
+						use tcss_usb3_port1 as usb3_port
+						device generic 0 alias conn0 on end
+					end
+					chip drivers/intel/pmc_mux/conn
+						use usb2_port4 as usb2_port
+						use tcss_usb3_port3 as usb3_port
+						device generic 1 alias conn1 on end
+					end
+				end
+			end
+		end
 		device ref hda on end
 	end
 end