From mboxrd@z Thu Jan 1 00:00:00 1970 From: Felipe Balbi Subject: Re: [PATCH 3/3] usb: dwc3: add a quirk for device disconnection issue in Synopsis dwc3 core Date: Mon, 12 Jan 2015 11:50:47 -0600 Message-ID: <20150112175047.GE6525@saruman> References: <1418695828-605-4-git-send-email-Sneeker.Yeh@tw.fujitsu.com> <20141222153730.GA12815@saruman> <20141229160641.GD29379@saruman> <20150105170921.GH19336@saruman> <20150112172032.GD6525@saruman> <1421083783.22660.69.camel@x220> Reply-To: Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="GxcwvYAGnODwn7V8" Return-path: Content-Disposition: inline In-Reply-To: <1421083783.22660.69.camel@x220> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Paul Bolle Cc: balbi-l0cyMroinI0@public.gmane.org, Pawel Moll , Sneeker Yeh , Rob Herring , Mark Rutland , Ian Campbell , Kumar Gala , Greg Kroah-Hartman , Mathias Nyman , Grant Likely , Alan Stern , Arnd Bergmann , Hans de Goede , Thomas Pugliese , David Mosberger , Peter Griffin , Sylwester Nawrocki , Andrew Bresticker , Gregory CLEMENT , Yoshihiro Shimoda , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-usb-fy+rA21nqHI@public.gmane.org List-Id: devicetree@vger.kernel.org --GxcwvYAGnODwn7V8 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jan 12, 2015 at 06:29:43PM +0100, Paul Bolle wrote: > On Mon, 2015-01-12 at 11:20 -0600, Felipe Balbi wrote: > > On Sun, Jan 11, 2015 at 11:19:55PM +0800, Sneeker Yeh wrote: > > > in case i express unclearly i also put a pdf: > > > https://drive.google.com/file/d/0B18MmcvvKjNNbDF6eEdHSzZCazA/view > > >=20 > > > This issue is defined by a two-way race at disconnect, between > > > 1) class driver interrupt endpoint resheduling attempts if the ISR ga= ve an > > > ep error event due to device detach (it would try 3 times) > > > 2) Disconnect interrupt on PORTSC_CSC, which is cleared by hub thread > > > asynchronously > > > 3) The hardware IP was configured in silicon with > > > - DWC_USB3_SUSPEND_ON_DISCONNECT_EN=3D1 (this is an IP configu= ration > >=20 > > yeah, aparently this is another configuration which is not exposed on > > HWPARAMS registers. Paul, can you confirm for us ? I couldn't find it on > > Databook on any of the HWPARAMS registers. >=20 > I guess you meant to ask Pawel, because I know nothing at all about all > that!=20 No, it was Paul Zimmerman :-) --=20 balbi --GxcwvYAGnODwn7V8 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJUtAl3AAoJEIaOsuA1yqREig0P/RG9Il8bjoVJQuWb51562MH1 XgXqZWDT7b7p/WGUtDbC423JXUoQilktOvofCdO5tq3UBqO6I+RGpxb1E5BfJKCP vWEvH3q+kIrpNsUw7R9mIoD52ouzqJAfhuH3XldnsrBGX7nl7wEB7LhDdHEnpKCz Fr53LJ/AFLWiQYl+LMJ59e11kYeJSRQMuyaw6lzFoo+bvrNDm2P6PUrd4j/CpV5H EfpUb1x+7H8WhWVx3i7DKhSIrb/i6QiZkA1bK8Rt3OpiDVYQDC5wHYUYqSn1P82Z ugLsFm4ajvBUEbuqWubyl2Et1I4u9doVeXEzehHJmtdWcUPZLax7LitG0D8MkPY9 Q8O/Puq7PLjnYETMGidLP8qNrTBWmUVwuBpU4bxJYktoeoR96xL8DB9nOhHVFoNt CH7dFl9XzjaSTxBXgQmcvOaez7J0tkeOih4EmKiZaN/XDKWArIu3i7M7FuDYocHr Z+VTW+GoP7oa9/1RoX2auHnlhhWvanqkCuHxWHUzEZb+2RxHCUJWcGGMMy4erWcw 3BucbtvfYCojcXFnaZI+N06idAzK3BeMEUsoo4OcuyeT7nuJXMmyKSSVJ1DSulHu gSe4e5n3zCM2109TAGQzlhcXioIgKg004xYoWLarEJDmQ+TeVAstV8/mm86+aLsR CUXQ8MUchR7WtQ4b9ke1 =aa/l -----END PGP SIGNATURE----- --GxcwvYAGnODwn7V8-- -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html