linux-kernel - Re: [PATCH 1/3] drivers: mtd: spinand: Add generic spinand frameowrk and micron driver.

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Message-ID: <20130626152243.GA9414@kpatel.netlogicmircro.com>
Date:	Wed, 26 Jun 2013 20:52:44 +0530
From:	"Kamlakant Patel" <kamlakant.patel@...adcom.com>
To:	"Sourav Poddar" <sourav.poddar@...com>
cc:	linux-mtd@...ts.infradead.org,
	spi-devel-general@...ts.sourceforge.net, broonie@...nel.org,
	dwmw2@...radead.org, manonuevo@...ron.com, tqnguyen@...ron.com,
	grant.likely@...aro.org, linux-omap@...r.kernel.org, rnayak@...com,
	linux-kernel@...r.kernel.org, balbi@...com
Subject: Re: [PATCH 1/3] drivers: mtd: spinand: Add generic spinand
 frameowrk and micron driver.

On Wed, Jun 26, 2013 at 01:11:10PM +0530, Sourav Poddar wrote:
> From: Mona Anonuevo <manonuevo@...ron.com>
> 
> This patch adds support for a generic spinand framework(spinand_mtd.c).
> This frameowrk can be used for other spi based flash devices also. The idea
> is to have a common model under drivers/mtd, as also present for other no spi
> devices(there is a generic framework and device part simply attaches itself to it.)
> 
> The generic frework will be used later by me for a SPI based spansion S25FL256 device.
> The patch also contains a micron driver attaching itself to generic framework.
> 
> Signed-off-by: Mona Anonuevo <manonuevo@...ron.com>
> Signed-off-by: Tuan Nguyen <tqnguyen@...ron.com>
> Signed-off-by: Sourav Poddar <sourav.poddar@...com>
> ----
> [I picked this as a standalone patch, can split it into generic and device part
> based on community feedback.]
> 
>  drivers/mtd/Kconfig               |    2 +
>  drivers/mtd/Makefile              |    2 +
>  drivers/mtd/spinand/Kconfig       |   24 ++
>  drivers/mtd/spinand/Makefile      |   10 +
>  drivers/mtd/spinand/spinand_lld.c |  776 +++++++++++++++++++++++++++++++++++++
>  drivers/mtd/spinand/spinand_mtd.c |  690 +++++++++++++++++++++++++++++++++
>  include/linux/mtd/spinand.h       |  155 ++++++++
>  7 files changed, 1659 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/mtd/spinand/Kconfig
>  create mode 100644 drivers/mtd/spinand/Makefile
>  create mode 100644 drivers/mtd/spinand/spinand_lld.c
>  create mode 100644 drivers/mtd/spinand/spinand_mtd.c
>  create mode 100644 include/linux/mtd/spinand.h
> 

I am working on Micron SPINAND(Micron MT29F1G01ZACH). I tried this patch, but it's not working.
It is throwing following error message while mounting:
[  260.232000] jffs2: cannot read OOB for EB at 00000000, requested 8 bytes, read 0 bytes, error -22
mount: mounting /dev/mtdblock5 on /mnt/ failed: Input/output error

I am working on it to fix into the driver, will send an updated patch with the fix.

Thanks,
Kamlakant Patel

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