[PATCH] mtd: nand: gpmi: reset BCH earlier, too, to avoid NAND startup problems
dedekind1 at gmail.com
Wed Dec 12 10:11:43 EST 2012
On Wed, 2012-12-05 at 21:46 +0100, Wolfram Sang wrote:
> It could happen (1 out of 100 times) that NAND did not start up
> correctly after warm rebooting, so the kernel could not find the UBI or
> DMA timed out due to a stalled BCH. When resetting BCH together with
> GPMI, the issue could not be observed anymore (after 10000+ reboots). We
> probably need the consistent state already before sending any command to
> NAND, even when no ECC is needed. I chose to keep the extra reset for
> BCH when changing the flash layout to be on the safe side.
> Signed-off-by: Wolfram Sang <w.sang at pengutronix.de>
> Cc: Huang Shijie <b32955 at freescale.com>
> Cc: Artem Bityutskiy <dedekind1 at gmail.com>
> Cc: David Woodhouse <david.woodhouse at intel.com>
> Would be really great to have in 3.7. Also a stable-candidate IMO.
Pushed to l2-mtd.git, thanks
If you believe this is suitable for stable, please let me know.
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