Support of Micron SPI flash (size > 16MB)

[Mingkai.Hu at freescale.com]

> -----Original Message-----
> From: Huang Shijie [mailto:b32955 at freescale.com]
> Sent: Friday, May 16, 2014 4:33 PM
> To: Hu Mingkai-B21284
> Cc: Brian Norris; Mark Brown; linux-mtd at lists.infradead.org; linux-
> spi at vger.kernel.org; dwmw2 at infradead.org;
> vivien.didelot at savoirfairelinux.com
> Subject: Re: Support of Micron SPI flash (size > 16MB)
> 
> 于 2014年05月16日 16:15, Mingkai.Hu at freescale.com 写道:
> > Another question is for erase and program command. From the datasheet,
> > not only the WTITE ENABLE command need to be issued before the command
> > can be executed, but also a special READ FLAG STATUS RESISTER command
> > need to be issued after the erase/program command which is not
> > implemented in the upstream code. We implement the READ flag operation
> and erase can work, but write still fail.
> >
> > I saw somebody has added the Micron larger SPI flash (>16Mb) support,
> > so I'd like to know if they run into such issue.
> Yes, we have noticed this issue:
> 
> Please see this patch:
> http://lists.infradead.org/pipermail/linux-mtd/2014-April/053571.html
> 
Thanks for your info, Shijie. We implemented this in a similar way.

Thanks,
Mingkai