[U-Boot] nand onfi 8bit/16bit bus support

[Scott Wood]

On 05/06/2013 11:53:52 AM, Michal Simek wrote:
> Hi guys,
> 
> Zynq supports 8 and 16bit ONFI nand flashes.
> We can count number of connected pins and from that
> we know if 8bit or 16bit nand flash is used.
> 
> I have looked at the code and contains ONFI detection
> with correct detection of bus width + checking later.
> Why also not setup proper chip->options for NAND_BUSWIDTH_16?
> 
> Not sure how others but if driver expect just ONFI devices
> and support 8 and 16bit options why not just to setup
> chip options based on information from ONFI or
> not check that (busw != (chip->options & NAND_BUSWIDTH_16))
> for onfi case.

This is fixed in current Linux, with NAND_BUSWIDTH_AUTO.  There was a  
patchset to merge in recent Linux MTD code a while back, but an  
expected respin didn't come.  I'll try to fix it up when I process this  
merge window's patches.

-Scott