Re: i.MX21 USB driver - hub 1-0:1.0: Cannot enable port 2. Maybe the USB cable is bad?
"Midhun A" <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Hi, > The USB spec won't help; it's too general. You need to know the > details of the behavior of the imx21. If you can hook up an > oscilloscope and watch the signal levels change, that might give you > some ideas. It could be something as simple as a bad capacitance. I was going through the schematic of our board and found that there is no capacitance present in the connections between i.MX21 - USB Trancevier (PDIUSBP11A) - USB Host Socket. So is the hardware missing something? Or are you talking of bad hardware design of our board which causes some bad capacitance? Please bear with my questions if they are appear stupid. I am totally new to embedded world and USB. That is why I am trying to tweek the existing drivers as far as possible than writing my own. Thanks, Midhun. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel