imx27: Unsupported ECC algorithm

[Miquel Raynal]

Hi Fabio,

Miquel Raynal <miquel.raynal at bootlin.com> wrote on Thu, 17 Sep 2020
18:13:18 +0200:

> Hi Fabio,
> 
> Fabio Estevam <festevam at gmail.com> wrote on Wed, 16 Sep 2020 10:49:03
> -0300:
> 
> > Hi Miquel,
> > 
> > On a imx27-phytec-phycard-s-rdk  board running linux-next, the
> > following warning is seen:
> > 
> > 10:15:26.232069  ------------[ cut here ]------------
> > 10:15:26.232880  WARNING: CPU: 0 PID: 1 at
> > drivers/mtd/nand/raw/nand_base.c:5242 nand_scan_with_ids+0x9bc/0x1008
> > 10:15:26.241132  Unsupported ECC algorithm!
> > 
> > I believe it has been caused by 74a89d7f9ed7 ("mtd: rawnand: Use the
> > ECC framework user input parsing bits")
> > 
> > Its dts uses nand-ecc-mode = "hw" :
> > 
> > &nfc {
> > pinctrl-names = "default";
> > pinctrl-0 = <&pinctrl_nfc>;
> > nand-bus-width = <8>;
> > nand-ecc-mode = "hw";
> > nand-on-flash-bbt;
> > status = "okay";
> > };
> > 
> > I don't have access to this hardware, but I saw the report by the
> > Pengutronix lab in kernelci:
> > https://storage.kernelci.org/next/master/next-20200916/arm/imx_v4_v5_defconfig/gcc-8/lab-pengutronix/baseline-imx27-phytec-phycard-s-rdk.html
> > 
> > Any ideas?  
> 
> Thanks for the report, I don't know what is happening yet but I'll
> investigate.
> 
> As I'll be off next week, it might take a bit longer than expected
> to see this solved if I don't come up with something by tomorrow...

Perhaps Tudor's series is related to your issue, would you mind testing
it?

https://patchwork.ozlabs.org/project/linux-mtd/list/?series=202344

Thanks,
Miquèl