[U-Boot-Users] 16BIT SPANSION Flash writing problem with CFI Driver

[Andrew Dyer]

On 11/20/06, Tolunay Orkun <listmember at orkun.us> wrote:
> Sam Song wrote:
> >> non-buffered writes I believe the write timeout of 0
> >> may be the problem. Typically these values are set
> >> to 0 if the feature is not supported but
> >> the datasheet gives program sequence as well. Please
> >> override the data read from CFI regarding write
> >> timeout with a non zero value (say 1ms
> >> timeout) and see what happens. Perhaps, they set the
> >>
> >
> > With this hacking way as suggested, it simply worked
> > fine! I tried programming a 1.4MB files several times.
> > No probelm.
> >
>
> Glad to hear that the hack has worked.
> > --- drivers/cfi_flash.c 17 Nov 2006 09:02:43 -0000
> >  1.2
> > +++ drivers/cfi_flash.c 20 Nov 2006 03:41:43 -0000
> >  1.3
> > @@ -1107,7 +1107,12 @@ ulong flash_get_size (ulong
> > +#ifndef CONFIG_S29GL064M
> > info->write_tout = (tmp * (1 << flash_read_uchar
> > (info, FLASH_OFFSET_WMAX_TOUT))) / 1000;
> > +#else
> > + info->write_tout = 1;   /* Suggested by Tolunay */
> > +#endif /* CONFIG_S29GL064M  */
> > +
> >
> Instead of a chip specific solution we should try to find more
> generalized solution. At minimum, we could always use 1 if the value
> turns out to be 0 after calculation.
>

I think we had a long e-mail exchange about this problem in may of '05
some of which is here:

http://article.gmane.org/gmane.comp.boot-loaders.u-boot/17379

it looks like a fix never got committed (at least as of the last time
I pulled from git which was admittedly a while ago).

-- 
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        The parts of a computer system that can be kicked.