From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: Help wanted with USB and OMAP3 off_mode Date: Wed, 9 Jan 2013 22:34:56 +1100 Message-ID: <20130109223456.7832c2bd@notabene.brown> References: <20130109092915.1c2077b5@notabene.brown> <50ED3FA5.9030905@compulab.co.il> <20130109211931.0e00db5d@notabene.brown> <50ED4549.6080802@amarulasolutions.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=PGP-SHA1; boundary="Sig_/WL9HqMCKxGg0xIt+IyGjwaK"; protocol="application/pgp-signature" Return-path: Received: from cantor2.suse.de ([195.135.220.15]:41362 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757440Ab3AILfR (ORCPT ); Wed, 9 Jan 2013 06:35:17 -0500 In-Reply-To: <50ED4549.6080802@amarulasolutions.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Michael Trimarchi Cc: Igor Grinberg , linux-omap@vger.kernel.org --Sig_/WL9HqMCKxGg0xIt+IyGjwaK Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Wed, 09 Jan 2013 11:24:09 +0100 Michael Trimarchi wrote: > Hi Neil >=20 > On 01/09/2013 11:19 AM, NeilBrown wrote: > > On Wed, 09 Jan 2013 12:00:05 +0200 Igor Grinberg > > wrote: > >=20 > >> -----BEGIN PGP SIGNED MESSAGE----- > >> Hash: SHA1 > >=20 > >> Hi Neil, > >=20 > >> On 01/09/13 00:29, NeilBrown wrote: > >>> > >>> Hi, > >>> I'm trying to get off_mode working reliably on my gta04 mobile phone. > >>> > >>> My current stumbling block is USB. The "Option" GSM module is attach= ed via > >>> USB (there is a separate transceiver chip attached to port 1 which is= placed > >>> in OMAP_EHCI_PORT_MODE_PHY). > >=20 > >> Which PHY is this (vendor/model)? > >=20 > > Hi Igor, > > it is the SMSC USB3322 > >=20 > > http://www.smsc.com/media/Downloads_Public/Data_Sheets/3320.pdf > >=20 > >=20 > > BTW I subsequently discovered that keeping USBHOST out off off_mode only > > sometimes avoid the problem, not always. So there are probably multiple > > issues :-( >=20 > Are you sure that you don't have glitch on power, reset pin during suspen= d? >=20 No, I don't really have the equipment to measure such things. But is it likely? Would enabling off_mode make it more likely? Can you suggest some way I could test the hypothesis? The power pin is connected to a 3v3 regulator which certainly should stay on the whole time and other things which depend on it keep working. The reset line is connected to GPIO174 which is configured: # cat /sys/kernel/debug/omap_mux/mcspi1_cs0 name: mcspi1_cs0.gpio_174 (0x480021ce/0x19e =3D 0x011c), b ac2, t NA mode: OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE4 signals: mcspi1_cs0 | sdmmc2_dat7 | NA | NA | gpio_174 | NA | NA | safe_mode The "PIN_INPUT" seems a bit odd, so I changed it to OMAP_PIN_OUTPUT but that didn't appear to make any difference. Thanks, NeilBrown --Sig_/WL9HqMCKxGg0xIt+IyGjwaK Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iQIVAwUBUO1V4Tnsnt1WYoG5AQKHqw//R40kF1Yfzql0fzCv8ovMvduvWBdpp+qh 4fgzeKjy88+/s9+OjeOsH6NrDexHYF+NDl1QjzEwFx0tMjwY5/vU2/IdoQ4SWvcy SO8oXWQMBKt5vyM/1g2S0rCyUfXHd/e4mo2ujmrAE9B7UrKMsDwE0evpFXG4FRVD //4oxbDT0svpK2sN3OJdG/hap2Xvsw5BdEypdRepqStAn238DO6PrajeLcGt61kZ SnxZJqB+BRkQaF0O0SrnLT5WsWfcnTuRgitoG6U/b6j3ATSb8yLH+218CfwNOAuQ Z/1TZRDSHkGxTzQHiNMVZw47hAB8CIUdArnBItOeEV8YRrAgtxf0XYOk0b7gbRyp 8uQGH4FI2wZsNlSVV/yP/oXxb+soEnGRYf6ZNRD6OZYOD+iDZKdZRtXKAY0yMfGf 7jNriWyf79Kt+qGqyBQ2mHZDgKKIBwOZfsn6X2lgveT2hODH7b5dMOfZ6nEcKTMq EGDjIHU2SVKhGlP/4a43z3zkeuM25QiFg+ubW8X5vs11F9XCklcqnnY/tLI+dHca w58GrWYCwmeYNH44Kvu4n6CasdgNgtoNGZD1WsVZPECcOM4bjl5mHMP1qYKz48bW vsuj6XyyS/c/K6MhXdHERPA2fE84DiZ8zY+yskr095uq987+8Dza3MjZ7BMfO5eS Cns55z3LQbg= =XfgN -----END PGP SIGNATURE----- --Sig_/WL9HqMCKxGg0xIt+IyGjwaK--