[Letux-kernel] Pandaboard ES no longer booting properly

[H. Nikolaus Schaller]

When trying to use a Bullseye rootfs to test SGX DDK1.17
on omap4 I was not able to boot the Pandaboard. It
repeatedly does a reboot after ca. 12 seconds.

It turned out that it happens always after the line

[   12.609222] hub 2-1:1.0: 5 ports detected

Since I am not sure if the board is broken I tried older
kernels than letux-5.6-rc3.

It turns out that 4.19.105 and 4.19.66 fail at exactly the
same location while 4.19.8 does boot:

* 5.6-rc3			reboots after [   15.251495] hub 1-1:1.0: 5 ports detected
* 4.19.106			reboots after [   12.609222] hub 2-1:1.0: 5 ports detected
* 4.19.66			reboots after [   12.498352] hub 1-1:1.0: 5 ports detected
* 4.19.8			continues after [ 12.361938] hub 2-1:1.0: 5 ports detected

So the board is ok but Letux kernel is broken somehow.

Next steps will be to "bisect" through kernel binaries
between 4.19.8 and 4.19.66 to better locate the issue.

Then - maybe - a bisect may help. Or diff shows something
with relevance.

BR,
Nikolaus