[U-Boot] SPL variant of sunxi nand module

[Nikolai Zhubr <n-a-zhubr@yandex.ru>]

Hi,

Its just to remind sunxi_nand_spl.c is still broken. (And probably has 
been for a couple releases or so).
I'm unable to fix it myself (other than reverting the mentioned commit 
locally.)


Thank you,

Regards,
Nikolai

24.12.2018 0:47, Nikolai Zhubr:
> Hi again,
>
> The following commit (titled "use PIO instead of DMA") apparently broke
> actual reading of nand pages in SPL at least for A20:
>
> http://git.denx.de/?p=u-boot.git;a=commit;h=6ddbb1e936c78cdef1e7395039fa7020c5c75326
>
>
> Instead of reading page contents, non-dma (current) version just feeds
> zeroes here.
> Tested on A20-olinuxino-micro with a Hynix 4GB nand chip.
>
> It'd be nice to somehow fix it back eventually :)
>
> Other than that, nand boot seems usable (with added necessary chip id).
>
>
> Thank you,
>
> Regards,
> Nikolai
>