[U-Boot] [PATCH] NAND: add Samsung K9LBG08UXD identifier

[Scott Wood]

On Tue, 20 Jul 2010 08:43:55 +0800
Lei Wen <adrian.wenl at gmail.com> wrote:

> On Tue, Jul 20, 2010 at 4:22 AM, Scott Wood <scottwood at freescale.com> wrote:
> > On Mon, Jul 19, 2010 at 09:05:05PM +0800, Lei Wen wrote:
> >> Rebased version for this nand chip has one problem in detecting its
> >> page size using in nand_base.c.
> >> If we set page size 0 in nand_ids.c, we would get the calculation
> >> result as page size 2048, while the true page size is 4096.
> >
> > Is the ID data bad, or is there a bug in nand_get_flash_type(), or is it
> > some new ID format that needs support?
> 
> Samsung seem modify the ID name rule, which make the calculation
> method nand_get_flash_type doesn't work.
> In mainline linux code, it give a hardcode way to identify this type
> of nand with new calculation method.

Let's do the same thing Linux does, then.

It looks like it's not just writesize that is different...

> > Is there zero possibility that a 2k page NAND in this size could be made in
> > the future (e.g. for compatibility with controllers that don't support 4k
> > pages)?
> 
> Maybe we could post another patch for that kind of nand?

My point is just that we should make autodetection work if it's
practical.

-Scott