NAND for Amlogic status

Hi there,

I would like to know current status for NAND support in amlogic u-boot.
We're using the 2015.xx version provided by the manufacturer and would like
to try u-boot-amlogic.

From the status table in linux-meson.com it seems NAND is not supported
yet, but it looks like there's been some work on that. I'm interested
particularly in the A113X (axg).

Another important feature is whether there would be something equivalent to
'aml-flash-tool' ('update' tool) for flashing the device over USB.

Thanks a lot.

Regards,
Juan