On 10.02.2016, at 18:21, Stefan Wahren [off-list ref] wrote:

Hi,

quoted

Maybe someone has gotten any idea?

this sounds like an issue i had with the compute module here:

http://permalink.gmane.org/gmane.linux.kernel.rpi/2197

This one was fixed - if I remember correctly.

Unfortunately i don't have the cm anymore.

Maybe you can try this downstream patch:

https://github.com/raspberrypi/linux/commit/09041f7ccbd1cde792edae91c41266886d5d1382

I wonder if it is really interrupts that are the root cause
to mee it looks like a clock problem - especially as it actually
impacts the PL011 driver and not the aux driver?

And initializing the other way (pl011 is console, aux as tty)
works without any issues - so it HAS to do with accessing the
PL011 or the clock framework.

Martin