Re: [PATCH v16 6/7] usb: host: xhci-plat: Create platform device for onboard hubs in probe()

From: Alan Stern
Date: Wed Oct 20 2021 - 16:37:24 EST


On Wed, Oct 20, 2021 at 01:27:40PM -0700, Matthias Kaehlcke wrote:
> Hi Mathias,
>
> On Wed, Oct 20, 2021 at 04:05:37PM +0300, Mathias Nyman wrote:
> > If separate devices for controlling onboard hub power is the right solution then
> > how about creating the onboard hub device in usb_add_hcd() (hcd.c), and
> > store it in struct usb_hcd.
> >
> > A bit like how the roothub device is created, or PHYs are tuned.
>
> Sure, that sounds feasible, even better if it's handled in a single place
> and different types of controllers don't have to add support separately.

Bear in mind that this would prevent you from working with onboard
non-root hubs.

Alan Stern