[PATCH] sunxi: board: Splitting CHIP defconfig for nand.

[Maxime Ripard]

On Fri, Feb 19, 2021 at 06:00:13PM +0000, André Przywara wrote:
> On 24/01/2021 16:19, Alexandre GRIVEAUX wrote:
> 
> Hi Alexandre,
> 
> (CCing: Kory, plus using Maxime's and Boris' newer emails)
> 
> > This patch split CHIP defconfig to add nand 4G and 8G support.
> > 
> > Some CONFIG was put at the end of defconfig to ease comparison between:
> > - CHIP Pro
> > - CHIP with Toshiba 4G
> > - CHIP with Hynix 8G
> > 
> > Witch are essentialy the same board with differents nand and memory.
> > 
> > Values was taken from now defunct compagny script "chip-update-firmware.sh"
> 
> Mmh, I am puzzled how this is supposed to work? I thought that the NAND
> in the non-Pro version was not supported (MLC?). So booting via USB was
> the only option?
> Has this changed?
> 
> Can someone confirm that this works?

The CHIP-Pro is indeed different, it's using a different SoC and NAND
(SLC) chip.

All the variants of the CHIP use an MLC NAND that isn't supported at all
by U-Boot.

I would discourage you from merging any MLC NAND related patch until
some form of MLC support is merged into U-Boot.

Maxime
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