[S] Change in coreboot[main]: mb/google/brox: Add new GFX devices

[Shelley Chen (Code Review)]

Shelley Chen has submitted this change. ( https://review.coreboot.org/c/coreboot/+/79731?usp=email )

Change subject: mb/google/brox: Add new GFX devices
......................................................................

mb/google/brox: Add new GFX devices

Add GFX devices for DDI (eDP and HDMI) and TCP (USC C0 and C2
ports). Copied the PLD placements from USB PLDs.

BUG=b:300690448
BRANCH=None
TEST=emerge-brox coreboot

Change-Id: Ic39916819f64ede1c80eccfd05ba4916b9f285af
Signed-off-by: Shelley Chen 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79731
Tested-by: build bot (Jenkins) 
Reviewed-by: Ivy Jian 
---
M src/mainboard/google/brox/variants/brox/overridetree.cb
1 file changed, 23 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Ivy Jian: Looks good to me, approved

diff --git a/src/mainboard/google/brox/variants/brox/overridetree.cb b/src/mainboard/google/brox/variants/brox/overridetree.cb
index d7fc83a..c9767bc 100644
--- a/src/mainboard/google/brox/variants/brox/overridetree.cb
+++ b/src/mainboard/google/brox/variants/brox/overridetree.cb
@@ -1,5 +1,28 @@
 chip soc/intel/alderlake
    device domain 0 on
+		device ref igpu on
+			chip drivers/gfx/generic
+				register "device_count" = "6"
+				# DDIA for eDP
+				register "device[0].name" = ""LCD""
+				# DDIB for HDMI
+				# If HDMI is not enumerated in the kernel, then no GFX device should be added for DDIB
+				register "device[1].name" = ""DD01""
+				# TCP0 (DP-1) for port C0
+				register "device[2].name" = ""DD02""
+				register "device[2].use_pld" = "true"
+				register "device[2].pld" = "ACPI_PLD_TYPE_C(LEFT, LEFT, ACPI_PLD_GROUP(1, 1))"
+				# TCP1 (DP-2) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP1
+				register "device[3].name" = ""DD03""
+				# TCP2 (DP-3) for port C2
+				register "device[4].name" = ""DD04""
+				register "device[4].use_pld" = "true"
+				register "device[4].pld" = "ACPI_PLD_TYPE_C(LEFT, RIGHT, ACPI_PLD_GROUP(2, 1))"
+				# TCP3 (DP-4) is unused for any ports but still enumerated in the kernel, so GFX device is added for TCP3
+				register "device[5].name" = ""DD05""
+				device generic 0 on end
+			end
+		end # Integrated Graphics Device
    	device ref pch_espi on
    		chip ec/google/chromeec
    			use conn0 as mux_conn[0]