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Introduction

This page is about using embedded GNU/Linux devices in order to get the USB debug logs.

Howto

Compiling

You need to be familiar with (cross) compiling your kernel.
(Cross) compile it as usual but during the configuration do the following:

Go into Device Drivers:

Device Drivers  --->

Then go into USB support:

[*] USB support  --->

Then go into USB Gadget Support:

<M>   USB Gadget Support  --->

Then enable the following option:

<M>     EHCI Debug Device Gadget

Then select the printk option for now(a bug has to be fixed to make serial option work properly):

        EHCI Debug Device mode (printk)  --->

Loading

Remove all usb gadget drivers such as g_ehter or g_mass_storage with rmmod then do:

modprobe g_dbgp

Finding the USB debug port

See EHCI Debug Port#Finding the USB debug port

Tested hardware

Brand and Device	kernel used	Target devices	works?
Goldelico GTA04 A3	neil-plus kernel and branch (3.7)	Lenovo X60	Yes
Buglabs's bug 2.0	(2.6.35)	Lenovo X60	Yes

EHCI Gadget Debug