[coreboot] EHCI Debug Gadget
jlewis at johnlewis.ie
Thu Oct 17 17:47:16 CEST 2013
On 17/10/2013 16:35, Kyösti Mälkki wrote:
> On 17.10.2013 17:45, John Lewis wrote:
>> Hey Guys, I'm trying to setup a Beaglebone Black as the subject.
>> followed the instructions and I get lots of this when I try to make
>> do it's thang: [ 3142.831914] CAUTION: musb: Babble Interrupt
>> [ 3143.107609] gadget: setup: failure req 9 v 1 [ 3143.289034]
>> musb: Babble Interrupt Occurred [ 3143.289088] gadget: disconnected
>> 3143.564615] gadget: setup: failure req 9 v 1 [ 3143.746013]
>> musb: Babble Interrupt Occurred [ 3143.746058] gadget: disconnected
>> 3144.021599] gadget: setup: failure req 9 v 1 [ 3144.264994]
>> musb: Babble Interrupt Occurred [ 3144.265038] gadget: disconnected
>> 3144.540802] gadget: setup: failure req 9 v 1 [ 3144.722247]
>> musb: Babble Interrupt Occurred [ 3144.722304] gadget: disconnected
>> 3144.997944] gadget: setup: failure req 9 v 1 [ 3145.179357]
>> musb: Babble Interrupt Occurred [ 3145.179415] gadget: disconnected
>> pointers? Web search comes up fruitless except for references to the
>> kernel source code which I don't understand. ;) Thanks, John.
> Hi John
> Apply the patches and follow the instructions here for BeagleBone
> In coreboot menuconfig, the selection of usbdebug dongle 'BeagleBone'
> only for 'BeagleBone', not 'BeagleBone Black'. I better add option
> for 'BeagleBone Black' to avoid the confusion. Select 'Net20DC
> compatible' for now.
> Also in coreboot menuconfig, under 'Debugging', enable verbose
> messaging. Of course you will need another working console to receive
> those messages, CBMEM console will do if your target system is able
> reach OS.
Man, you are quick. :)
Yeah, I followed those instructions. The BBB's kernel and modules have
been compiled with the patches.
Ah, that explains part of it then, because I had selected Beaglebone as
opposed to NET20DC or compatible.
It isn't able to reach OS, but if changing the coreboot menuconfig
doesn't fix it I shall try it on a Chromebook which is working with
coreboot, and revert.
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