Here's the manual for some of the ARM NAND Primecells.
http://infocenter.arm.com/help/topic/com.arm.doc.ddi0380g/DDI0380G_smc_pl350_series_r2p1_trm.pdf
In section 3.3.22 they talk about the Primecell ID registers. Most
Primecells have these registers at FE0-FEC. You can poke around in a
debugger or write program to scan for these ID registers in all of the
peripheral blocks. If you are able to locate them you will be able to
look up the doc for the primecell used. Of course ARM is not the only
place you can buy cells and ARM makes a lot of different cells. The
location of these ID registers is commonly left out of the vendor's
documentation.
It would be much easier if Allwinner just told us which cells they
used. Then we could chase the cell vendors for documentation or find
it in the manual for another CPU.
--
Jon Smirl
jons...@gmail.com