Problem attaching USB Garmin device

Hans Petter Selasky hps at selasky.org
Mon Jul 29 09:45:12 UTC 2019


On 2019-07-29 10:37, Mariappan N wrote:
> Hi HPS,
> 
> Attached the USB analyzer trace for Garmin and other working device connected to XHCI. Please download from the following link.
> 
> <https://www.dropbox.com/s/prnlpc1uiucpu3b/xhci_usb_working.ufo?dl=0>
> https://www.dropbox.com/sh/jkw2zns9l857e4v/AACp7r3dGjR-r9Vfy9KDmzZ6a?dl=0
> 

Hi,

Basically the Garmin doesn't respond to status stage of the set address 
message, which is a clear USB specification violation. I wonder if doing 
a bus-reset right before the set-address, like in the other trace, will 
cause the device to recover. Can you make a new trace with the attached 
patch?

--HPS
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