diff --git a/src/mainboard/google/rex/variants/ovis/overridetree.cb b/src/mainboard/google/rex/variants/ovis/overridetree.cb
index 058a240..889ae0e 100644
--- a/src/mainboard/google/rex/variants/ovis/overridetree.cb
+++ b/src/mainboard/google/rex/variants/ovis/overridetree.cb
@@ -1,4 +1,18 @@
 chip soc/intel/meteorlake
+	register "usb2_ports[0]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C1
+	register "usb2_ports[1]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C0
+	register "usb2_ports[2]" = "USB2_PORT_TYPE_C(OC0)"	# USB2_C2
+	register "usb2_ports[3]" = "USB2_PORT_MID(OC3)"		# Type-A Port A0
+	register "usb2_ports[6]" = "USB2_PORT_MID(OC3)"		# Type-A Port A1
+	register "usb2_ports[7]" = "USB2_PORT_MID(OC3)"		# Type-A Port A2
+	register "usb2_ports[8]" = "USB2_PORT_MID(OC3)"		# Type-A Port A3
+
+	register "usb3_ports[0]" = "USB3_PORT_DEFAULT(OC3)"	# USB3/2 Type-A Port A0
+	register "usb3_ports[1]" = "USB3_PORT_DEFAULT(OC3)"	# USB3/2 Type-A Port A1
+
+	register "tcss_ports[0]" = "TCSS_PORT_DEFAULT(OC0)"
+	register "tcss_ports[1]" = "TCSS_PORT_DEFAULT(OC0)"
+	register "tcss_ports[2]" = "TCSS_PORT_DEFAULT(OC0)"
 
 	register "serial_io_i2c_mode" = "{
 		[PchSerialIoIndexI2C0] = PchSerialIoDisabled,
@@ -36,6 +50,128 @@
 				.flags = PCIE_RP_LTR | PCIE_RP_AER,
 			}"
 		end	# PCIE11 SSD card
+		device ref tbt_pcie_rp0 on end
+		device ref tbt_pcie_rp1 on end
+		device ref tbt_pcie_rp2 on end
+		device ref tcss_xhci on
+			chip drivers/usb/acpi
+				device ref tcss_root_hub on
+					chip drivers/usb/acpi
+						register "desc" = ""USB3 Type-C Port C0""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_C(FRONT, CENTER, ACPI_PLD_GROUP(1, 1))"
+						register "custom_pld.vertical_position" = "PLD_VERTICAL_POSITION_LOWER"
+						device ref tcss_usb3_port1 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB3 Type-C Port C1""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_C(BACK, RIGHT, ACPI_PLD_GROUP(2, 1))"
+						device ref tcss_usb3_port2 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB3 Type-C Port C2""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_C(FRONT, LEFT, ACPI_PLD_GROUP(1, 2))"
+						device ref tcss_usb3_port3 on end
+					end
+				end
+			end
+		end
+		device ref tcss_dma0 on
+			chip drivers/intel/usb4/retimer
+				register "dfp[0].power_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B22)"
+				use tcss_usb3_port1 as dfp[0].typec_port
+				device generic 0 on end
+			end
+			chip drivers/intel/usb4/retimer
+				register "dfp[1].power_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B22)"
+				use tcss_usb3_port2 as dfp[1].typec_port
+				device generic 0 on end
+			end
+		end
+		device ref tcss_dma1 on
+			chip drivers/intel/usb4/retimer
+				register "dfp[0].power_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_B22)"
+				use tcss_usb3_port3 as dfp[0].typec_port
+				device generic 0 on end
+			end
+		end
+		device ref xhci on
+			chip drivers/usb/acpi
+				device ref xhci_root_hub on
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-C Port C0""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_C(FRONT, CENTER, ACPI_PLD_GROUP(1, 1))"
+						register "custom_pld.vertical_position" = "PLD_VERTICAL_POSITION_LOWER"
+						device ref usb2_port2 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-C Port C1""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_C(BACK, RIGHT, ACPI_PLD_GROUP(2, 1))"
+						device ref usb2_port1 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-C Port C2""
+						register "type" = "UPC_TYPE_C_USB2_SS_SWITCH"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_C(FRONT, LEFT, ACPI_PLD_GROUP(1, 2))"
+						device ref usb2_port3 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-A Port A0""
+						register "type" = "UPC_TYPE_A"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_A(FRONT, RIGHT, ACPI_PLD_GROUP(3, 1))"
+						device ref usb2_port4 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-A Port A1""
+						register "type" = "UPC_TYPE_A"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_A(FRONT, CENTER, ACPI_PLD_GROUP(3, 2))"
+						register "custom_pld.vertical_position" = "PLD_VERTICAL_POSITION_UPPER"
+						device ref usb2_port7 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-A Port A2""
+						register "type" = "UPC_TYPE_A"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_A(BACK, LEFT, ACPI_PLD_GROUP(3, 3))"
+						device ref usb2_port8 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Type-A Port A3""
+						register "type" = "UPC_TYPE_A"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_A(BACK, CENTER, ACPI_PLD_GROUP(3, 4))"
+						device ref usb2_port9 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB3 Type-A Port A0""
+						register "type" = "UPC_TYPE_USB3_A"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_A(FRONT, RIGHT, ACPI_PLD_GROUP(3, 1))"
+						device ref usb3_port1 on end
+					end
+					chip drivers/usb/acpi
+						register "desc" = ""USB3 Type-A Port A1""
+						register "type" = "UPC_TYPE_USB3_A"
+						register "use_custom_pld" = "true"
+						register "custom_pld" = "ACPI_PLD_TYPE_A(FRONT, CENTER, ACPI_PLD_GROUP(3, 2))"
+						register "custom_pld.vertical_position" = "PLD_VERTICAL_POSITION_UPPER"
+						device ref usb3_port2 on end
+					end
+				end
+			end
+		end
 		device ref i2c4 on
 			chip drivers/i2c/tpm
 				register "hid" = ""GOOG0005""
@@ -45,8 +181,32 @@
 		end
 		device ref soc_espi on
 			chip ec/google/chromeec
+				use conn0 as mux_conn[0]
+				use conn1 as mux_conn[1]
+				use conn2 as mux_conn[2]
 				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_port1 as usb2_port
+						use tcss_usb3_port2 as usb3_port
+						device generic 1 alias conn1 on end
+					end
+					chip drivers/intel/pmc_mux/conn
+						use usb2_port3 as usb2_port
+						use tcss_usb3_port3 as usb3_port
+						device generic 2 alias conn2 on end
+					end
+				end
+			end
+		end
 	end
 end