From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx2.rafi.de ([178.15.151.13]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1Z5uDa-0004Pg-Im for barebox@lists.infradead.org; Fri, 19 Jun 2015 11:12:19 +0000 MIME-Version: 1.0 In-Reply-To: References: From: andreas.willig@rafi.de Message-ID: Date: Fri, 19 Jun 2015 13:11:28 +0200 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Antwort: USB Host i.Mx6S To: Barebox List Soon after posting, I found the problem myself :) USB H1 requires to have VBus fead into controller to power the USBPHY. Afte= r adding a 0 Ohm resistor on the right place, the D- semi voltage disappear= s and enumeration works. Maybe this is helpfull for someone hitting similar problem (even if hardwar= e is slightly off-Topic here) Mit freundlichen Gr=FC=DFen aus Berg/ With kind regards i.A. Andreas Willig Dipl.-Ing. (FH) Entwicklung Elektronik RAFI GmbH & Co. KG Postfach 2060 88276 Ravensburg Tel.: +49 (0) 751 89-6142 mailto:andreas.willig@rafi.de, http://www.rafi.de Kommanditgesellschaft: Sitz Berg, Amtsgericht Ulm, HRA 550059 Komplement=E4r: RAFI Beteiligungs-GmbH, Sitz Berg, Amtsgericht Ulm HRB 5500= 74 Gesch=E4ftsf=FChrer: Albert Wasmeier, Dipl.-Kfm. Gerhard Schenk USt-Ident.-Nr.: DE 146 392 319, Steuer-Nr.: 77079/00291 -----"barebox" schrieb: ----- = An: Barebox List Von: andreas.willig@rafi.de Gesendet von: "barebox" = Datum: 19.06.2015 10:11 Betreff: USB Host i.Mx6S Hi everyone did anyone get a USB Stick Mass Storage to run, connected to i.MX6 Solo USB= H1? I can get it running on OTG Pure Host, but not on USB H1. It runs into= a timeout on issuieng GetDescriptor during usb_rescan. = Using a scope i don't see any traffic on D+/D-, what i observe is a drop of= D- to 1.3V where i expect 3.3V, which i see on Connection to USB OTG (USB = stick is a low Speed device, therefore D- High). Any ideas? Is there an additional Setting for UTMI/USBPhy required? Mit freundlichen Gr=FC=DFen aus Berg/ With kind regards i.A. Andreas Willig Dipl.-Ing. (FH) Entwicklung Elektronik RAFI GmbH & Co. KG Postfach 2060 88276 Ravensburg Tel.: +49 (0) 751 89-6142 mailto:andreas.willig@rafi.de, http://www.rafi.de Kommanditgesellschaft: Sitz Berg, Amtsgericht Ulm, HRA 550059 Komplement=E4r: RAFI Beteiligungs-GmbH, Sitz Berg, Amtsgericht Ulm HRB 5500= 74 Gesch=E4ftsf=FChrer: Albert Wasmeier, Dipl.-Kfm. Gerhard Schenk USt-Ident.-Nr.: DE 146 392 319, Steuer-Nr.: 77079/00291 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox