Can't access SD card with iMX6ULL and Iris

I am trying to replicate our eMMC update process, used on the iMX6S, with the iMX6ULL. I flashed u-boot and Linux using the Easy Installer, that boots fine. I can’t seem to access the SD card from u-boot at all.
The mmc list command says:
mmc dev 0 says
MMC: no card present
What am I missing?

There is no eMMC on iMXULL, it uses raw NAND flash.

Have you solved your problem?

What you are seeing may be the following issue.