Re: [PATCH v7 0/6] Add new series Micron SPI NAND devices

[Miquel Raynal]

Hi Poonam,

Poonam Aggrwal <poonam.aggrwal@xxxxxxx> wrote on Fri, 15 May 2020
05:29:07 +0000:

> Adding Ashish.
> 
> Regards
> Poonam
> 
> > -----Original Message-----
> > From: Naresh Kamboju <naresh.kamboju@xxxxxxxxxx>
> > Sent: Friday, May 15, 2020 10:57 AM
> > To: shiva.linuxworks@xxxxxxxxx; Miquel Raynal <miquel.raynal@xxxxxxxxxxx>;
> > Shivamurthy Shastri <sshivamurthy@xxxxxxxxxx>
> > Cc: Richard Weinberger <richard@xxxxxx>; Vignesh Raghavendra
> > <vigneshr@xxxxxx>; Boris Brezillon <boris.brezillon@xxxxxxxxxxxxx>;
> > Chuanhong Guo <gch981213@xxxxxxxxx>; Frieder Schrempf
> > <frieder.schrempf@xxxxxxxxxx>; linux-mtd@xxxxxxxxxxxxxxxxxxx; open list <linux-  
> > kernel@xxxxxxxxxxxxxxx>; Poonam Aggrwal <poonam.aggrwal@xxxxxxx>;  
> > Suram Suram <suram@xxxxxxx>; lkft-triage@xxxxxxxxxxxxxxxx
> > Subject: Re: [PATCH v7 0/6] Add new series Micron SPI NAND devices
> > 
> > On Wed, 11 Mar 2020 at 23:28, <shiva.linuxworks@xxxxxxxxx> wrote:  
> > >
> > > From: Shivamurthy Shastri <sshivamurthy@xxxxxxxxxx>
> > >
> > > This patchset is for the new series of Micron SPI NAND devices, and
> > > the following links are their datasheets.  
> > 
> > While boot NXP ls2088 device with mainline kernel the following nand warning
> > noticed. How critical this warning ?

Are you sure this is the right thread? Shivamurthy added SPI-NAND
support, you are talking about a raw NAND device.
> > 
> > [    1.357722] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x48
> > [    1.364085] nand: Micron MT29F16G08ABACAWP
> > [    1.368181] nand: 2048 MiB, SLC, erase size: 512 KiB, page size:
> > 4096, OOB size: 224
> > [    1.375932] nand: WARNING: 530000000.flash: the ECC used on your
> > system is too weak compared to the one required by the NAND chip

If you are talking about this one, it is pretty self explanatory: the
NAND chip requires a minimum correction which is not achieved here.
Either because the ECC engine cannot reach the requested amount (you
cannot do anything) or because you requested a too low correction with
DT properties.

> > 
> > [    1.388767] Bad block table found at page 524160, version 0x01
> > [    1.396833] Bad block table found at page 524032, version 0x01
> > [    1.403781] nand_read_bbt: bad block at 0x000002d00000
> > [    1.408921] nand_read_bbt: bad block at 0x000002d80000
> > [    1.414750] fsl,ifc-nand 530000000.nand: IFC NAND device at
> > 0x530000000, bank 2
> > 
> > 
> > Full test log,
> > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fqa-
> > reports.linaro.org%2Flkft%2Flinux-mainline-oe%2Fbuild%2Fv5.7-rc5-55-
> > g1ae7efb38854%2Ftestrun%2F18254%2Flog&amp;data=02%7C01%7Cpoonam.
> > aggrwal%40nxp.com%7C146f634c869f4c70baa108d7f8909ffb%7C686ea1d3bc2
> > b4c6fa92cd99c5c301635%7C0%7C0%7C637251172354638298&amp;sdata=%2B
> > Jhs%2Fb92%2BA56WzYdHe%2BBhXWfjk8feCGAFv%2BRzFKC9PM%3D&amp;rese
> > rved=0
> > 
> > - Naresh  

Thanks,
MiquÃl