EHCI Debug Gadget

[John Lewis]

Hey Guys,

I'm trying to setup a Beaglebone Black as the subject. I've followed 
the instructions and I get lots of this when I try to make it do it's 
thang:

[ 3142.831914] CAUTION: musb: Babble Interrupt Occurred
[ 3143.107609]  gadget: setup: failure req 9 v 1
[ 3143.289034] CAUTION: musb: Babble Interrupt Occurred
[ 3143.289088]  gadget: disconnected
[ 3143.564615]  gadget: setup: failure req 9 v 1
[ 3143.746013] CAUTION: musb: Babble Interrupt Occurred
[ 3143.746058]  gadget: disconnected
[ 3144.021599]  gadget: setup: failure req 9 v 1
[ 3144.264994] CAUTION: musb: Babble Interrupt Occurred
[ 3144.265038]  gadget: disconnected
[ 3144.540802]  gadget: setup: failure req 9 v 1
[ 3144.722247] CAUTION: musb: Babble Interrupt Occurred
[ 3144.722304]  gadget: disconnected
[ 3144.997944]  gadget: setup: failure req 9 v 1
[ 3145.179357] CAUTION: musb: Babble Interrupt Occurred
[ 3145.179415]  gadget: disconnected

Any pointers? Web search comes up fruitless except for references to 
the kernel source code which I don't understand. ;)

Thanks,

John.

[Kyösti Mälkki]

On 17.10.2013 17:45, John Lewis wrote:
> Hey Guys,
>
> I'm trying to setup a Beaglebone Black as the subject. I've followed the
> instructions and I get lots of this when I try to make it do it's thang:
>
> [ 3142.831914] CAUTION: musb: Babble Interrupt Occurred
> [ 3143.107609]  gadget: setup: failure req 9 v 1
> [ 3143.289034] CAUTION: musb: Babble Interrupt Occurred
> [ 3143.289088]  gadget: disconnected
> [ 3143.564615]  gadget: setup: failure req 9 v 1
> [ 3143.746013] CAUTION: musb: Babble Interrupt Occurred
> [ 3143.746058]  gadget: disconnected
> [ 3144.021599]  gadget: setup: failure req 9 v 1
> [ 3144.264994] CAUTION: musb: Babble Interrupt Occurred
> [ 3144.265038]  gadget: disconnected
> [ 3144.540802]  gadget: setup: failure req 9 v 1
> [ 3144.722247] CAUTION: musb: Babble Interrupt Occurred
> [ 3144.722304]  gadget: disconnected
> [ 3144.997944]  gadget: setup: failure req 9 v 1
> [ 3145.179357] CAUTION: musb: Babble Interrupt Occurred
> [ 3145.179415]  gadget: disconnected
>
> Any 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 Black 
kernel:
    http://www.coreboot.org/EHCI_Gadget_Debug

In coreboot menuconfig, the selection of usbdebug dongle 'BeagleBone' is 
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 usbdebug 
messaging. Of course you will need another working console to receive 
those messages, CBMEM console will do if your target system is able to 
reach OS.

Regards,
  Kyösti

[John Lewis]

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. 
> > I've
> > followed the instructions and I get lots of this when I try to make 
> > it
> > do it's thang: [ 3142.831914] CAUTION: musb: Babble Interrupt 
> > Occurred
> > [ 3143.107609] gadget: setup: failure req 9 v 1 [ 3143.289034] 
> > CAUTION:
> > musb: Babble Interrupt Occurred [ 3143.289088] gadget: disconnected 
> > [
> > 3143.564615] gadget: setup: failure req 9 v 1 [ 3143.746013] 
> > CAUTION:
> > musb: Babble Interrupt Occurred [ 3143.746058] gadget: disconnected 
> > [
> > 3144.021599] gadget: setup: failure req 9 v 1 [ 3144.264994] 
> > CAUTION:
> > musb: Babble Interrupt Occurred [ 3144.265038] gadget: disconnected 
> > [
> > 3144.540802] gadget: setup: failure req 9 v 1 [ 3144.722247] 
> > CAUTION:
> > musb: Babble Interrupt Occurred [ 3144.722304] gadget: disconnected 
> > [
> > 3144.997944] gadget: setup: failure req 9 v 1 [ 3145.179357] 
> > CAUTION:
> > musb: Babble Interrupt Occurred [ 3145.179415] gadget: disconnected 
> > Any
> > 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 
> Black
> kernel:
> http://www.coreboot.org/EHCI_Gadget_Debug
>
> In coreboot menuconfig, the selection of usbdebug dongle 'BeagleBone' 
> is
> 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 
> usbdebug
> messaging. Of course you will need another working console to receive
> those messages, CBMEM console will do if your target system is able 
> to
> reach OS.
>
> Regards,
> Kyösti

Hi Kyösti,

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.

Thank you!

John.

[John Lewis]

Yeah, changing usb dongle selection in coreboot menuconfig to NET20DC 
or compatible worked. :)

Which, will lead me onto my next mailing list submission once I have 
perused the output.

Brace yourselves!

On 17/10/2013 16:47, John Lewis wrote:
> 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. 
> > > I've
> > > followed the instructions and I get lots of this when I try to make
> > > it do it's thang: [ 3142.831914] CAUTION: musb: Babble Interrupt
> > > Occurred [ 3143.107609] gadget: setup: failure req 9 v 1 [
> > > 3143.289034] CAUTION: musb: Babble Interrupt Occurred [ 
> > > 3143.289088]
> > > gadget: disconnected [ 3143.564615] gadget: setup: failure req 9 v 
> > > 1
> > > [ 3143.746013] CAUTION: musb: Babble Interrupt Occurred [
> > > 3143.746058] gadget: disconnected [ 3144.021599] gadget: setup:
> > > failure req 9 v 1 [ 3144.264994] CAUTION: musb: Babble Interrupt
> > > Occurred [ 3144.265038] gadget: disconnected [ 3144.540802] gadget:
> > > setup: failure req 9 v 1 [ 3144.722247] CAUTION: musb: Babble
> > > Interrupt Occurred [ 3144.722304] gadget: disconnected [ 
> > > 3144.997944]
> > > gadget: setup: failure req 9 v 1 [ 3145.179357] CAUTION: musb: 
> > > Babble
> > > Interrupt Occurred [ 3145.179415] gadget: disconnected Any 
> > > 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 Black kernel: http://www.coreboot.org/EHCI_Gadget_Debug 
> > [1]
> > In coreboot menuconfig, the selection of usbdebug dongle 
> > 'BeagleBone'
> > is 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 usbdebug messaging. Of course you will need another
> > working console to receive those messages, CBMEM console will do if
> > your target system is able to reach OS. Regards, Kyösti
>
> Hi Kyösti,
>
> 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.
>
> Thank you!
>
> John.