linux-kernel - Re: [PATCH try #2] Blackfin on-chip NAND Flash Controller driver

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Date:	Fri, 07 Sep 2007 08:52:21 +0300
From:	Artem Bityutskiy <dedekind@...radead.org>
To:	bryan.wu@...log.com
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mike Frysinger <vapier.adi@...il.com>,
	Robin Getz <rgetz@...ckfin.uclinux.org>,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH try #2] Blackfin on-chip NAND Flash Controller driver

On Tue, 2007-09-04 at 13:57 +0800, Bryan Wu wrote:
> This is the driver for latest Blackfin on-chip nand flash controller
> 
>  - use nand_chip and mtd_info common nand driver interface
>  - provide both PIO and dma operation
>  - compiled with ezkit bf548 configuration
>  - use hardware 1-bit ECC
>  - tested with YAFFS2 and can mount YAFFS2 filesystem as rootfs
> 
> ChangeLog from try#1
>  - use hweight32() instead of count_bits()
>  - replace bf54x with bf5xx and BF54X with BF5XX
>  - compare against plat->page_size in 2 cases when enable hardware ECC
> 
> Signed-off-by: Bryan Wu <bryan.wu@...log.com>

Bryan,

I'd suggest you to test your NAND driver with the following NAND tests:

git://git.infradead.org/~ahunter/nand-tests.git

(http://git.infradead.org/?p=users/ahunter/nand-tests.git;a=summary)


You may want to avoid the torture test, but it is useful to run it with
limited amount of erase cycles to make sure your flash/driver survives
really high I/O load.For example, we caught occasional DMA transfer
problems while running the torture test for few days.

-- 
Best regards,
Artem Bityutskiy (Битюцкий Артём)

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