[PATCH] [UNTESTED] u-boot: Use better NAND timings

Harald Welte laforge at openmoko.org
Fri Oct 24 18:17:24 CEST 2008

On Fri, Oct 24, 2008 at 04:12:01PM +0200, Jonas Bonn wrote:
> +/* at 133MHz HCLK, this is 0ns, 30ns and 30ns */
> +#define GTA02_NAND_TACLS	0
> +#define GTA02_NAND_TWRPH0	4
> +#define GTA02_NAND_TWRPH1	4
> +
> I think you mean GTA01 here...

thanks, fixed in my tree.

> Furthermore, TACLS=0 is not valid on the S3C2410; minimum value is 1.
> From my reading of the NAND-spec, the best we can do is
> 10ns,25ns,10ns, which is 2,4,2 (and gives 15ns,30ns,15ns at 133MHz).
> Feel free to refute this, though, if you have a better reading.

mh. I think I read it i a way that gets quite different timings, but really
don't have the time for any further work on this, sorry.

- Harald Welte <laforge at openmoko.org>          	        http://openmoko.org/
Software for the world's first truly open Free Software mobile phone

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