bb_dc_offset_calibration timeout in 9361

I have a current Mathworks image both FPGA and Zynq7020 ARM code that works fine for the time being.  However, the current Mathworks release, 2018A, does not support the fast lock profile.  As a result, retuning was very slow.

I am trying to use the current build, but create my own AD9361 interface in order to support fast lock.  After a bit of trial and error, I have figured out that I need the linux userspace driver of the No OS software, which is what I'm using.  I have compiled fine, and can build/run the example plus custom code.  However, when I get to bb_dc_offset_calibration, it fails and I don't know why.

I have enabled:  HAVE_VERBOSE_MESSAGES and HAVE_DEBUG_MESSAGES, and up to the calibration (I think) everything looks fine.  But once it runs the calibration, it returns with:

Calibration TIMEOUT (0x16, 0x1) and then of course fails the ad9361_init() function.

Any advice?

Thank you