Hi Gred, > -----Original Message----- > From: Gerd Hoffmann <[email protected]> > Sent: Monday, August 31, 2020 12:33 PM > To: Sai Pavan Boddu <[email protected]> > Cc: Peter Maydell <[email protected]>; Markus Armbruster > <[email protected]>; 'Marc-André Lureau' > <[email protected]>; Paolo Bonzini <[email protected]>; > Edgar Iglesias <[email protected]>; Francisco Eduardo Iglesias > <[email protected]>; [email protected]; Alistair Francis > <[email protected]>; Eduardo Habkost <[email protected]>; > Ying Fang <[email protected]>; 'Philippe Mathieu-Daudé' > <[email protected]>; Vikram Garhwal <[email protected]>; Paul > Zimmerman <[email protected]> > Subject: Re: [PATCH v4 5/7] misc: Add versal-usb2-regs module > > On Sat, Aug 29, 2020 at 12:49:38AM +0530, Sai Pavan Boddu wrote: > > This is a dummy module to emulate control registers of versal usb2 > > controller. > > --verbose please. xhci supports all usb speeds, including usb2. [Sai Pavan Boddu] This module is has soc specific control/status register to control the phy-reset, adjust frame length time and coherency properties for the transactions.
> > So why this hardware is here, what does it on a real device and what is the > emulation doing? "dummy" sounds like it does just enough to make the > guest driver happy, probably pretending nothing is connected? Yes, this is added to make guest happy. I will the commit message with more info Regards, Sai Pavan > > thanks, > Gerd
