From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Tue, 11 Dec 2012 03:32:29 +0100
Subject: [U-Boot] [PATCH] mtd: nand: mxs: reset BCH earlier, too,
	to avoid NAND startup problems
In-Reply-To: <1354740527-18798-1-git-send-email-w.sang@pengutronix.de>
References: <1354740527-18798-1-git-send-email-w.sang@pengutronix.de>
Message-ID: <201212110332.29853.marex@denx.de>
List-Id: <u-boot.lists.denx.de>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: u-boot@lists.denx.de

Dear Wolfram Sang,

> 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>
[...]

Good, thanks. Ccing Scott to pick this up.

Acked-by: Marek Vasut <marex@denx.de>

Best regards,
Marek Vasut