Soon after posting, I found the problem myself :) USB H1 requires to have VBus fead into controller to power the USBPHY. After adding a 0 Ohm resistor on the right place, the D- semi voltage disappears and enumeration works. Maybe this is helpfull for someone hitting similar problem (even if hardware is slightly off-Topic here) Mit freundlichen Grüßen 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@xxxxxxx, http://www.rafi.de Kommanditgesellschaft: Sitz Berg, Amtsgericht Ulm, HRA 550059 Komplementär: RAFI Beteiligungs-GmbH, Sitz Berg, Amtsgericht Ulm HRB 550074 Geschäftsführer: Albert Wasmeier, Dipl.-Kfm. Gerhard Schenk USt-Ident.-Nr.: DE 146 392 319, Steuer-Nr.: 77079/00291 -----"barebox" <barebox-bounces@xxxxxxxxxxxxxxxxxxx> schrieb: ----- An: Barebox List <barebox@xxxxxxxxxxxxxxxxxxx> Von: andreas.willig@xxxxxxx 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 Grüßen 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@xxxxxxx, http://www.rafi.de Kommanditgesellschaft: Sitz Berg, Amtsgericht Ulm, HRA 550059 Komplementär: RAFI Beteiligungs-GmbH, Sitz Berg, Amtsgericht Ulm HRB 550074 Geschäftsführer: Albert Wasmeier, Dipl.-Kfm. Gerhard Schenk USt-Ident.-Nr.: DE 146 392 319, Steuer-Nr.: 77079/00291 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
