diff --git a/src/mainboard/google/dedede/variants/galtic/overridetree.cb b/src/mainboard/google/dedede/variants/galtic/overridetree.cb
index 404024b1d6..e981541122 100644
--- a/src/mainboard/google/dedede/variants/galtic/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/galtic/overridetree.cb
@@ -9,9 +9,7 @@ chip soc/intel/jasperlake
 	#|                   | for TPM communication     |
 	#|                   | before memory is up       |
 	#| I2C0              | Trackpad                  |
-	#| I2C1              | Digitizer                 |
 	#| I2C2              | Touchscreen               |
-	#| I2C3              | Camera                    |
 	#| I2C4              | Audio                     |
 	#+-------------------+---------------------------+
 	register "common_soc_config" = "{
@@ -22,21 +20,98 @@ chip soc/intel/jasperlake
 		.i2c[0] = {
 			.speed = I2C_SPEED_FAST,
 		},
-		.i2c[1] = {
-			.speed = I2C_SPEED_FAST,
-		},
 		.i2c[2] = {
 			.speed = I2C_SPEED_FAST,
 		},
-		.i2c[3] = {
-			.speed = I2C_SPEED_FAST,
-		},
 		.i2c[4] = {
 			.speed = I2C_SPEED_FAST,
 		},
 	}"
 
+	register "SerialIoI2cMode" = "{
+		[PchSerialIoIndexI2C0]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C1]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C2]  = PchSerialIoPci,
+		[PchSerialIoIndexI2C3]  = PchSerialIoDisabled,
+		[PchSerialIoIndexI2C4]  = PchSerialIoPci,
+	}"
+
+	# USB Port Configuration
+	register "usb2_ports[5]" = "USB2_PORT_MID(OC_SKIP)"     # Camera
+
 	device domain 0 on
-		device pci 15.0 on end
+		device pci 14.0 on
+			chip drivers/usb/acpi
+				device usb 0.0 on
+					chip drivers/usb/acpi
+						register "desc" = ""Camera""
+						register "type" = "UPC_TYPE_INTERNAL"
+						device usb 2.5 on end
+					end
+				end
+			end
+		end # USB xHCI
+
+		device pci 15.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_WAKE_EDGE_LOW(GPP_B3_IRQ)"
+				register "wake" = "GPE0_DW0_03"
+				register "probed" = "1"
+				device i2c 15 on end
+			end
+			chip drivers/i2c/hid
+				register "generic.hid" = ""ELAN2702""
+				register "generic.desc" = ""ELAN Touchpad""
+				register "generic.irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_B3_IRQ)"
+				register "generic.wake" = "GPE0_DW0_03"
+				register "generic.probed" = "1"
+				register "hid_desc_reg_offset" = "0x01"
+				device i2c 15 on end
+			end
+		end
+		device pci 15.2 on
+			chip drivers/i2c/hid
+				register "generic.hid" = ""ELAN0001""
+				register "generic.desc" = ""ELAN Touchscreen""
+				register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_D4_IRQ)"
+				register "generic.probed" = "1"
+				register "generic.reset_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_LOW(GPP_D5)"
+				register "generic.enable_gpio" =
+							"ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_D6)"
+				register "generic.enable_delay_ms" = "7"
+				register "generic.has_power_resource" = "1"
+				register "hid_desc_reg_offset" = "0x00"
+				device i2c 10 on end
+			end
+		end # I2C 2
+		device pci 19.0 on
+			chip drivers/i2c/generic
+				register "hid" = ""10EC5682""
+				register "name" = ""RT58""
+				register "desc" = ""Realtek RT5682""
+				register "irq_gpio" = "ACPI_GPIO_IRQ_EDGE_BOTH(GPP_D16)"
+				register "property_count" = "1"
+				register "property_list[0].type" = "ACPI_DP_TYPE_INTEGER"
+				register "property_list[0].name" = ""realtek,jd-src""
+				register "property_list[0].integer" = "1"
+				device i2c 1a on end
+			end
+			chip drivers/i2c/generic
+				register "hid" = ""10EC1015""
+				register "desc" = ""Realtek SPK AMP L""
+				register "uid" = "0"
+				device i2c 28 on end
+			end
+			chip drivers/i2c/generic
+				register "hid" = ""10EC1015""
+				register "desc" = ""Realtek SPK AMP R""
+				register "uid" = "1"
+				device i2c 29 on end
+			end
+		end
+		device pci 1f.3 on end # Intel HDA
 	end
 end