On Sat, 13 Sep 2003, James Courtier-Dutton wrote:

> I have a USB device with descriptor type 7. The current lsusb only 
> handles up to 5, So it just prints: -
> unknown descriptor type: 07 21 07 88 13 ff 03
> 
> I have looked through all the usb docs I can find on the web, but no luck.
> Can anyone point me to a document that enumerates the descriptor types, 
> so that I can update lsusb.c, so that it does better decode of 
> descriptor types.

The USB-2.0 specification lists the standard descriptor types (table 9.5).  
They're also listed in include/linux/usb_ch9.h.  Type 7 is an "Other Speed
Configuration" descriptor.  For a device operating at high-speed it gives
full-speed configuration information, and vice-versa.

Alan Stern



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