[U-Boot] Cannot boot mx6qsabred with 2019.07-rc2

Hi,

I get the following error when trying to boot mx6q sabresd with 2019.07-rc2:

U-Boot SPL 2019.07-rc2 (May 16 2019 - 14:28:55 -0300) Trying to boot from MMC1 spl: could not find mmc device 0. error: -19 SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ###

I haven't debugged this yet.

Does anyone have any ideas?

Thanks,

Fabio Estevam