OTG BUG BeagleBoard XM

GoogleGroups
1

I have this problem:

I need to boot the BB XM with the OTG already plugged in.

But when I do it, the kernel does not boot and it stops printing

Uncompressing Linux......................................

.
I have compiled the 2.6.32 kernel with this conf file
http://www.google.com/url?sa=D&q=http://www.angstrom-distribution.org/demo/beagleboard/config-2.6.32-r90%2Bgitra6bad4464f985fdd3bed72e1b82dcbfc004d7869-beagleboard.multi-config-cpuidle-gether.config&usg=AFQjCNFxXL0f7IWA_StFLjmABD6LhIvxrA

How can I solve this bug?

2

no ideas?? :frowning:

3

karminet wrote:

no ideas?? :frowning:

how do you power the board?
does it boot correctly with the usb not plugged?

4

I power with 5V and with otg. Without otg it works fine, but I need
often to reboot the BB and the otg will be plugged when I reboot.

:frowning:

5


This sound like issue even with a powered hub
to use OTG I needed an external power supply on my C4
I was told this was once not so but now an issue

— On Wed, 12/1/10, Vladimir Pantelic vladoman@gmail.com wrote:



> From: Vladimir Pantelic vladoman@gmail.com
> Subject: Re: [beagleboard] Re: OTG BUG BeagleBoard XM
> To: beagleboard@googlegroups.com
> Date: Wednesday, December 1, 2010, 9:33 AM
>
> karminet wrote:
> > no ideas?? :frowning:
>
> how do you power the board?
> does it boot correctly with the usb not plugged?
>
> >
> > On Nov 30, 3:10 pm, karminet<carmignani.da…@gmail.com> wrote:
> >> I have this problem:
> >>
> >> I need to boot the BB XM with the OTG already plugged in.
> >>
> >> But when I do it, the kernel does not boot and it stops printing
> >>
> >> Uncompressing Linux…
> >>
> >> .
> >> I have compiled the 2.6.32 kernel with this conf filehttp://www.google.com/url?sa=D&q=http://www.angstrom-distribution.org…
> >>
> >> How can I solve this bug?
> >
>
> –
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|

6

So do you think that 5V power is not enough!? or with the otg plugged
into the 5V is disable?

7

karminet wrote:

So do you think that 5V power is not enough!? or with the otg plugged
into the 5V is disable?

there are issues around booting from OTG only, but always thought
that 5V dc-in overrides OTG

Gerald?

8

— On Wed, 12/1/10, Vladimir Pantelic vladoman@gmail.com wrote:
<<there are issues around booting from OTG only, but always thought
<<<that 5V dc-in overrides OTG

sounds like a different issue sorry I did not see he had power
mine was a kernel panick when using a powered hub only with Angstrom Demo image
on C4.
If I removed the external powered hub with keyboard and mouse attached I could boot
using OTG power
Plugging in a powered hub after booting Demo image would crash
I was told this was a known issue,buy power supply , I did it stopped

Guess since I was told this was not always the way it worked on the BB I WONDERED
Is that issue SW or HW







|

9

Mark Lazarewicz wrote:

10

Thanks!
Is there any patch for the bug " bug in musb driver that makes it
crash when started with
    usb plugged and no gadget driver loaded "?

11

karminet wrote:

Thanks!
Is there any patch for the bug " bug in musb driver that makes it
crash when started with
     usb plugged and no gadget driver loaded "?

no patch, but AIUI you can build a kernel that has one gadget driver
loaded at boot.

Also, if this way your issue, you would see some kernel panic on
the serial, but you see nothing, right?

12

At now the gadget driver is already in the kernel and it is not a
module.

Before compiling in this way the kernel (as I correctly understand
what are you saying me), the gadget driver was a module, and when I
reboot I sow a kernel panic. For this reason I compiled the kernel
with the gadget driver included.