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

[Kamlakant Patel]

On Wed, Jun 26, 2013 at 01:11:10PM +0530, Sourav Poddar wrote:
> From: Mona Anonuevo <manonuevo at micron.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 at micron.com>
> Signed-off-by: Tuan Nguyen <tqnguyen at micron.com>
> Signed-off-by: Sourav Poddar <sourav.poddar at ti.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