[U-Boot] [PATCH 1/1] NAND Re: mtdparts fails with NAND >= 4GB - Second try

[Aaron Williams]

On Saturday, February 12, 2011 02:08:00 am Albert ARIBAUD wrote:
> Le 12/02/2011 09:54, Aaron Williams a écrit :
> > Octeon ebb6300(ram)# mw.b 0x1f400000 0xf0
> > Octeon ebb6300(ram)# mw.b 0x1f400000 0xf0
> > Octeon ebb6300(ram)# mw.b 0x1f4000AA 0x98
> > Octeon ebb6300(ram)# md.b 0x1f400020 20
> > 1f400020: 51 51 52 52 59 59 02 02 00 00 40 40 00 00 00 00   
> > QQRRYY....@@.... 1f400030: 00 00 00 00 00 00 27 27 36 36 00 00 00 00 07
> > 07    ......''66......
> 
> This, according to the CFI spec, gives us the proof that the Spansion
> chip is a x16 device in x8 mode.
> 
> Can you now please, based on the knowledge that the device is x16 in x8
> mode, go through the CFI detection sequence agin and determine which
> line exactly fails to work as expected?
> 
> > -Aaron
> 
> Amicalement,

I'll take a look at this next week. The problem with the current code is that 
it detects the chip width of 8 but a port width of 16 which results in 16-bit 
writes. This fails for obtaining the manufacturer ID.

-Aaron