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 <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68099
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb b/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb
index b7588ea..c8772cc 100644
--- a/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb
+++ b/src/mainboard/lenovo/haswell/variants/t440p/devicetree.cb
@@ -23,8 +23,8 @@
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