[U-Boot] openrd-based board : linux hangs in calibrate_delay();

Hi all,

I am playing with a new board which is based on OpenRD-base. I have got u-boot up and running but half of the time when I start Linux it hangs in init/calibrate.c:calibrate_delay(). (I found this out using the LEDs because we have no UART at that stage!)

Is there something that needs to be done in u-boot that would stop this intermittent failure?

Thanks in advance,

Alex