Hello, On Fri Feb 16, 2024 at 11:48 AM CET, Siddharth Vadapalli wrote: > On 24/02/15 04:18PM, Thomas Richard wrote: > > From: Théo Lebrun <theo.lebrun@xxxxxxxxxxx> > > > > Add suspend and resume support. Only the rc mode is supported. > > > > During the suspend stage PERST# is asserted, then deasserted during the > > resume stage. > > Wouldn't this imply that the Endpoint device will be reset and therefore > lose context? Or is it expected that the driver corresponding to the > Endpoint Function in Linux will restore the state on resume, post reset? This does imply exactly that. Endpoint driver must be able to restore context anyway, as system-wide suspend could mean lost power to PCI RC controller (eg suspend-to-RAM) or PCI rails (dependent on hardware). Thanks, -- Théo Lebrun, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
