On Wed, Dec 05, 2018 at 02:22:14PM +0100, Lukas Wunner wrote: > On Wed, Dec 05, 2018 at 12:40:29PM +0200, Mika Westerberg wrote: > > On Wed, Dec 05, 2018 at 10:48:18AM +0100, Lukas Wunner wrote: > > > Does the root port have a _RMV and/or _SUN object? We could e.g. > > > disallow runtime PM for any bridge with _RMV present and the HPC > > > bit not set in the Slot Capabilities. > > > > Unfortunately it does not have either of those methods :/ It pretty much > > looks like a "normal root port" from OS perspective. > > > > Below is the ASL related to the root port (RP05) in question: > > The information might be buried in the Device Labeling DSM but I can't > make sense of it because I only have access to the PCI Firmware Spec 3.0, > which is too old. Good point. I have 3.2 but only ones in that _DSM are: 4 = PCI Bus Capabilities 6 = LTR Maximum Latency 8 = Avoid power-on Reset Delay Duplication on Sx Resume 9 = Device Readiness Durations Only thing that could be relevant is 4 (PCI Bus Capabilities) but I don't see anything in the spec saying it could be hot plug capable :(
