Messages in this thread | | | Date | Mon, 27 Jun 2022 15:37:10 -0400 | From | Alan Stern <> | Subject | Re: [PATCH v22 2/3] usb: misc: Add onboard_usb_hub driver |
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On Mon, Jun 27, 2022 at 12:06:21PM -0700, Matthias Kaehlcke wrote: > On Mon, Jun 27, 2022 at 02:54:03PM -0400, Alan Stern wrote: > > On Mon, Jun 27, 2022 at 11:14:47AM -0700, Matthias Kaehlcke wrote: > > > > > > Further there must be only one platform device for onboard hubs with a > > > companion hub (the hub is a single physical device). To achieve this two > > > > What do you mean by "companion hub"? I think you are using the wrong > > word here. If you're talking about the relation between the two logical > > hubs (one attached to the SuperSpeed bus and one attached to the > > Low/Full/High-speed bus) within a physical USB-3 hub, the correct term > > for this is "peer". See the existing usages in hub.h, hub.c, and > > port.c. > > > > "Companion" refers to something completely different (i.e., the UHCI or > > OHCI controllers that handle Low/Full-speed connections on behalf of a > > High-speed EHCI controller). > > Yes it's the relation between the two logical hub. The term 'companion-hub' > stems from the binding and has been around since v6 of this series. I guess > we should update the binding if the terminology isn't correct.
That sounds like a good idea.
Alan Stern
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