Re: [PATCH 0/3] thunderbolt: Update XDomain vendor properties dynamically

[Mika Westerberg]

On Mon, Aug 11, 2025 at 06:53:07AM +0200, Mika Westerberg wrote:
> On Fri, Aug 08, 2025 at 04:13:28PM +0100, Greg KH wrote:
> > > 0004 USB4
> > > 
> > > sounds good to me. In USB4 there is no "root hub". It's called host router
> > > (but we do have device routers that are called USB4 hubs for added
> > > confusion ;-).
> > > 
> > > But I'm fine with other numbers too, does not matter if you want to save it
> > > for some future USB variant.
> > 
> > Ok, use 0004 for this.  But what should I use for the text string here
> > in the usb.ids file?
> 
> Thanks! I'll cook up a patch changing these.
> 
> I don't think it should be in usb.ids because it is not visible anywhere
> except over USB4 link (between hosts). You don't see this through USB 2.x
> or 3.x.

Of course for documentation purposes it could be:

    0004 Linux USB4 Connection Manager