Missing support for ECC_SOFT_BCH in fsl-elbc-nand

[Scott Wood]

On Mon, 2015-03-30 at 16:20 +0200, Richard Weinberger wrote:
> Hi!
> 
> Am 30.03.2015 um 10:35 schrieb Martin Strbačka:
> > On 27.3.2015 17:02, Richard Weinberger wrote:
> >> On Fri, Mar 27, 2015 at 3:13 PM, Martin Strbačka <martin.strbacka at nic.cz> wrote:
> >>> Hello,
> >>>
> >>> in our product we have Freescale P2020 SoC together with Micron
> >>> MT29F2G08ABAEAWP NAND. Lately we discovered that the internal driver
> >>> (fsl-elbc-nand) supports only 1-bit HW ECC. So we would like to switch
> >>> to ECC_SOFT_BCH (or on-die ECC as I saw some patches in this list
> >>> recently). Do you know if anybody works on this or are there any patches
> >>> already?
> >>
> >> Works on what?
> >> I work (obviously) on on-die ECC support.
> > 
> > I mean working on support ECC_SOFT_BCH or on-die ECC in fsl-elbc-nand. I
> > believe that fsl-elbc-nand needs some modifications to support those ECC
> > modes. Or am I wrong?
> 
> Ah. My on-die ECC patches should work with any NFC. If you look
> at the diffstat you'll notice that it does not touch any NAND driver.
> Unless fsl-elbc-nand doesn't do strange things it should just work.
> Please give it a try, feedback is very welcome! :)

eLBC does "strange things" as its programming model is higher-level than
what nand_base.c was designed for.

-Scott