Re: [PATCH 1/4] PCI / ACPI: Identify external PCI devices

[Mika Westerberg]

On Thu, Nov 15, 2018 at 11:13:56AM +0000, Lorenzo Pieralisi wrote:
> I have strong objections to the way these bindings have been forced upon
> everybody; if that's the way *generic* ACPI bindings are specified I
> wonder why there still exists an ACPI specification and related working
> group.
> 
> I personally (but that's Bjorn and Rafael choice) think that this is
> not a change that belongs in PCI core, ACPI bindings are ill-defined
> and device tree bindings are non-existing.

Any idea where should I put it then? These systems are already out there
and we need to support them one way or another.

> At the very least Microsoft should be asked to publish and discuss
> these bindings within the ACPI and UEFI forums.

These bindings are public, see here:

  https://docs.microsoft.com/en-us/windows-hardware/drivers/pci/dsd-for-pcie-root-ports

However, they are not part of the ACPI spec as you say.