Hi Richard,

It's definitely not a serial issue (I checked that first). I've gone as far as probing the DDR clock line with a logic analyzer...and it it comes to sudden halt as soon as the 4.9+ kernels are loaded by U-Boot.

I don't have access to an ICE at the moment for any hardcore debugging, but I have a logic analyzer, so I'm checking heartbeats with that at the moment.

I'll check earlyprintk, just in case.

Thanks for the reply,
Cory