[coreboot-gerrit] Change in coreboot[master]: drivers/pcie/rtd3/device: Add PCIe RTD3 driver

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Furquan Shaikh, Marshall Dawson, Karthik Ramasubramanian, Felix Held.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/54966 )

Change subject: drivers/pcie/rtd3/device: Add PCIe RTD3 driver
......................................................................

Patch Set 4:

(1 comment)

File src/soc/amd/common/block/rtd3/rtd3.c:

https://review.coreboot.org/c/coreboot/+/54966/comment/d50fd558_c69a9256 
PS1, Line 210: pci_dev_read_resources
> What about the NVMe case where we don't have a PCI driver that writes the ACPI node? […]

You mean the root port itself? On Intel platforms at least, the root ports are described in ACPI (_SB.PCI0.RPxx), so it's perfectly valid to open up the scope (the RP device is in the DSDT).
That's how the current intel/common/pcie3/rtd3 driver works, it uses the RP device itself (plus the weird "PXSX" device)