CFI with 4 x8/x16 devices on a 32-bit bus

[Brett Carswell]

> dwmw2 at infradead.org said:
> >  If we detect it's a 16-bit device in 8-bit mode, do...
> >  cfi->device_type = 1;
> >  cfi->addr_unlock1 = 0xaaa;
> >  cfi->addr_unlock2 = 0x555; 
> 
> Actually, it's probably best not to override the device_type, 
> but to change 
> the code to always use DEVICE_TYPE_X8 instead of 
> cfi->device_type when 
> doing the unlock cycles, and set addr_unlock[12] to the 
> pre-shifted value 
> when cfi->device_type != 1.
> 

OK - this seems to work well. I have attached a patch that does what I think
you are desscibing - for those who are interested.

Brett

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