From: Peter Korsgaard <jacmet@sunsite•dk>
To: David Brownell <david-b@pacbell•net>
Cc: linuxppc-dev@ozlabs•org, linux-usb@vger•kernel.org
Subject: Re: [patch v4 0/4] Cypress c67x00 (EZ-Host/EZ-OTG) support
Date: Wed, 23 Jan 2008 22:20:32 +0100 [thread overview]
Message-ID: <873asofdcv.fsf@macbook.be.48ers.dk> (raw)
In-Reply-To: <200801230953.05921.david-b@pacbell.net> (David Brownell's message of "Wed\, 23 Jan 2008 09\:53\:05 -0800")
>>>>> "David" =3D=3D David Brownell <david-b@pacbell•net> 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
next prev parent reply other threads:[~2008-01-23 21:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-21 10:34 [patch v4 0/4] Cypress c67x00 (EZ-Host/EZ-OTG) support Peter Korsgaard
2008-01-21 10:34 ` [patch v4 1/4] USB: add Cypress c67x00 low level interface code Peter Korsgaard
2008-01-21 10:34 ` [patch v4 2/4] USB: add Cypress c67x00 OTG controller core driver Peter Korsgaard
2008-01-21 10:34 ` [patch v4 3/4] USB: add Cypress c67x00 OTG controller HCD driver Peter Korsgaard
2008-01-21 10:34 ` [patch v4 4/4] USB: add Cypress c67x00 OTG controller gadget driver Peter Korsgaard
2008-01-21 17:11 ` [patch v4 0/4] Cypress c67x00 (EZ-Host/EZ-OTG) support Grant Likely
2008-01-21 20:16 ` Peter Korsgaard
2008-01-21 20:51 ` David Brownell
2008-01-21 20:53 ` Grant Likely
2008-01-21 20:01 ` David Brownell
2008-01-21 20:14 ` Grant Likely
2008-01-21 21:13 ` Peter Korsgaard
2008-01-21 21:16 ` Peter Korsgaard
2008-01-23 17:12 ` Grant Likely
2008-01-23 17:53 ` David Brownell
2008-01-23 21:20 ` Peter Korsgaard [this message]
2008-01-28 20:40 ` Grant Likely
2008-01-28 21:01 ` Peter Korsgaard
2008-01-23 21:18 ` Peter Korsgaard
2008-01-21 21:08 ` Peter Korsgaard
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