From e8930e560fea4703a2807c67278279e92fa3db5c Mon Sep 17 00:00:00 2001 From: Nico Huber Date: Tue, 4 Oct 2022 12:42:36 +0200 Subject: [PATCH] mb/lenovo/t440p: Enable PCI 00:01.1 bridge for dGPU An optional dGPU can be connected to the second PEG bridge: -[0000:00]-+-00.0 Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller +-01.0-[01]-- +-01.1-[02]----00.0 NVIDIA Corporation GK208M [GeForce GT 730M] It's possible that the 01.0 bridge is never populated, but we have to leave it on anyway so 01.1 can be enumerated. Change-Id: Ieab7a7bf3b31b4ee9d9f12b5d827d866c87356e1 Signed-off-by: Nico Huber Reviewed-on: https://review.coreboot.org/c/coreboot/+/68099 Tested-by: build bot (Jenkins) Reviewed-by: Angel Pons --- src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb b/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb index b7588ea77d..c8772cc863 100644 --- a/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb +++ b/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb @@ -23,8 +23,8 @@ chip northbridge/intel/haswell subsystemid 0x17aa 0x220e inherit device pci 00.0 on end # Host bridge - device pci 01.0 on end # PCIe Bridge for discrete graphics - device pci 01.1 off end # Unused PCIe Bridge + device pci 01.0 on end # PCIe Bridge for discrete graphics (optional) + device pci 01.1 on end # PCIe Bridge for discrete graphics (optional) device pci 02.0 on end # Internal graphics VGA controller device pci 03.0 on end # Mini-HD audio