From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.190]) by ozlabs.org (Postfix) with ESMTP id 57EE0DDEC9 for ; Thu, 24 Jan 2008 08:20:38 +1100 (EST) Received: by nf-out-0910.google.com with SMTP id g16so49433nfd.9 for ; Wed, 23 Jan 2008 13:20:36 -0800 (PST) To: David Brownell Subject: Re: [patch v4 0/4] Cypress c67x00 (EZ-Host/EZ-OTG) support References: <20080121103434.397382000@sunsite.dk> <87sl0qzxos.fsf@macbook.be.48ers.dk> <200801230953.05921.david-b@pacbell.net> From: Peter Korsgaard Date: Wed, 23 Jan 2008 22:20:32 +0100 In-Reply-To: <200801230953.05921.david-b@pacbell.net> (David Brownell's message of "Wed\, 23 Jan 2008 09\:53\:05 -0800") Message-ID: <873asofdcv.fsf@macbook.be.48ers.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Sender: Peter Korsgaard Cc: linuxppc-dev@ozlabs.org, linux-usb@vger.kernel.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , >>>>> "David" =3D=3D David Brownell writes: David> On Wednesday 23 January 2008, Grant Likely wrote: >> The question is about the device structure which used to be provided >> by the platform device instances and now there just uses the c67x00's >> device struct. =C2=A0I was under the impression that each USB HCD needs= to >> have it's own struct device. =C2=A0I take it that's not true? David> Each root hub necessarily is a unique device, representing a set David> of downstream links. Unless Peter didn't test something relevant, David> it would seem we have observational proof that two root hubs can David> share the same device node for an upstream link. I haven't actually tested a setup with HCDs on both SIEs as I don't have a board with host connectors on both, but I've done the change based on your feedback: http://article.gmane.org/gmane.linux.usb.devel/53496 David> I can't think of a reason to demand multiple upstream links, though David> sharing them between root hubs like that isn't a common structure.= =20=20 David> - Dave --=20 Bye, Peter Korsgaard