tree 68d0306b85da9aceea263dc5c47aa0ed56076108
parent ea40a05422bdc87a7af5dc349e8adce59f982e72
author Wolfram Sang <w.sang@pengutronix.de> 1354704527 +0000
committer Scott Wood <scottwood@freescale.com> 1355267991 -0600

mtd: nand: mxs: reset BCH earlier, too, to avoid NAND startup problems

It could happen (1 out of 100 times) that NAND did not start up correctly after
warm rebooting, so we end up with various failures 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 commands to NAND. This behaviour was observed in barebox
and kernel, so I assume it affects U-Boot as well. 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@pengutronix.de>
Acked-by: Marek Vasut <marex@denx.de>