[U-Boot] [PATCH v7 1/5] mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform

[Gupta, Pekon]

Hi Stefan,

> From: Stefan Roese [mailto:sr at denx.de]
> > On 30.09.2013 16:13, Pekon Gupta wrote:
> > BCH8_ECC scheme implemented in omap_gpmc.c driver has following
> favours
> > +-----------------------------------+-----------------+-----------------+
> > |ECC Scheme                         | ECC Calculation | Error Detection |
> > +-----------------------------------+-----------------+-----------------+
> > |OMAP_ECC_BCH8_CODE_HW              |GPMC             |ELM H/W engine   |
> > |OMAP_ECC_BCH8_CODE_HW_DETECTION_SW |GPMC             |S/W BCH
> library  |
> > +-----------------------------------+-----------------+-----------------+
> >
> > Current implementation limits the BCH8_CODE_HW only for AM33xx
> device family.
> > (using CONFIG_AM33XX). However, other SoC families (like TI81xx) also
> have
> > ELM hardware module, and can support ECC error detection using ELM.
> >
> > This patch
> > - removes CONFIG_AM33xx
> >     Thus this driver can be reused by all devices having ELM h/w engine.
>
> Do you have an overview, which TI devices actually have this ELM h/w
> engine integrated? Especially if its integrated in the OMAP3530 SoC? I'm
> currently scanning the users manual and can't find any reference to this
> IP block.
>
Incase you are working on a x16 device on omap35xx, then you might
like to look at following patch set also. This allows:
- SPL boot: device-width can be set via CONFIG_SYS_NAND_DEVICE_WIDTH
- U-BOOT: device-width is auto-detected via reading on-chip ONFI params.

http://lists.denx.de/pipermail/u-boot/2013-September/163878.html


with regards, pekon