diff --git a/src/mainboard/google/brya/variants/redrix/overridetree.cb b/src/mainboard/google/brya/variants/redrix/overridetree.cb
index f8619c9312..cdea07141d 100644
--- a/src/mainboard/google/brya/variants/redrix/overridetree.cb
+++ b/src/mainboard/google/brya/variants/redrix/overridetree.cb
@@ -98,6 +98,7 @@ chip soc/intel/alderlake
 		device ref igpu on
 			chip drivers/gfx/generic
 				register "device_count" = "1"
+				# DDIA for eDP
 				register "device[0].name" = ""LCD""
 				# Use ChromeOS privacy screen _HID
 				register "device[0].hid" = ""GOOG0010""
@@ -109,6 +110,33 @@ chip soc/intel/alderlake
 					probe EPS PRIVACY_SCREEN
 				end
 			end
+			chip drivers/gfx/generic
+				register "device_count" = "1"
+				# DDIA for eDP
+				register "device[0].name" = ""LCD""
+				device generic 0 on
+					probe EPS PRIVACY_SCREEN_ABSENT
+				end
+			end
+			chip drivers/gfx/generic
+				register "device_count" = "5"
+				# eDP already added, so skipped
+				# DDIB for HDMI
+				register "device[0].name" = ""DD01""
+				# TCP0 (DP-1) for port C0
+				register "device[1].name" = ""DD02""
+				register "device[1].use_pld" = "true"
+				register "device[1].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))"
+				# TCP1 (DP-2) unused
+				register "device[2].name" = ""DD03""
+				# TCP2 (DP-3) for port C2
+				register "device[3].name" = ""DD04""
+				register "device[3].use_pld" = "true"
+				register "device[3].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))"
+				# TCP3 (DP-4) unused
+				register "device[4].name" = ""DD05""
+				device generic 0 on end
+			end
 		end # Integrated Graphics Device
 		device ref dtt on
 			chip drivers/intel/dptf
diff --git a/src/mainboard/google/brya/variants/redrix4es/overridetree.cb b/src/mainboard/google/brya/variants/redrix4es/overridetree.cb
index 81a808fa5b..37ddbc70b5 100644
--- a/src/mainboard/google/brya/variants/redrix4es/overridetree.cb
+++ b/src/mainboard/google/brya/variants/redrix4es/overridetree.cb
@@ -84,6 +84,7 @@ chip soc/intel/alderlake
 		device ref igpu on
 			chip drivers/gfx/generic
 				register "device_count" = "1"
+				# DDIA for eDP
 				register "device[0].name" = ""LCD""
 				# Use ChromeOS privacy screen _HID
 				register "device[0].hid" = ""GOOG0010""
@@ -95,6 +96,33 @@ chip soc/intel/alderlake
 					probe EPS PRIVACY_SCREEN
 				end
 			end
+			chip drivers/gfx/generic
+				register "device_count" = "1"
+				# DDIA for eDP
+				register "device[0].name" = ""LCD""
+				device generic 0 on
+					probe EPS PRIVACY_SCREEN_ABSENT
+				end
+			end
+			chip drivers/gfx/generic
+				register "device_count" = "5"
+				# eDP already added, so skipped
+				# DDIB for HDMI
+				register "device[0].name" = ""DD01""
+				# TCP0 (DP-1) for port C0
+				register "device[1].name" = ""DD02""
+				register "device[1].use_pld" = "true"
+				register "device[1].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))"
+				# TCP1 (DP-2) unused
+				register "device[2].name" = ""DD03""
+				# TCP2 (DP-3) for port C2
+				register "device[3].name" = ""DD04""
+				register "device[3].use_pld" = "true"
+				register "device[3].pld" = "ACPI_PLD_TYPE_C(RIGHT, LEFT, ACPI_PLD_GROUP(2, 1))"
+				# TCP3 (DP-4) unused
+				register "device[4].name" = ""DD05""
+				device generic 0 on end
+			end
 		end # Integrated Graphics Device
 		device ref dtt on
 			chip drivers/intel/dptf