[ast2500] aspeed-smc fail with MX25L25635F

[Shakeeb B K]

Hi Cédric,

On Fri, Apr 2, 2021 at 12:45 PM Cédric Le Goater <clg at kaod.org> wrote:

> Hello,
>
> On 4/1/21 5:22 PM, Shakeeb B K wrote:
> > Hi Cédric,
> >
> > The part we are using is *MX25L25635F*
> https://www.macronix.com/Lists/Datasheet/Attachments/7414/MX25L25635F,%203V,%20256Mb,%20v1.5.pdf
> <
> https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.macronix.com%2FLists%2FDatasheet%2FAttachments%2F7414%2FMX25L25635F%2C%25203V%2C%2520256Mb%2C%2520v1.5.pdf&data=04%7C01%7Cspasha%40nvidia.com%7C4cf89d8779c84d638c6f08d8ef7d0919%7C43083d15727340c1b7db39efd9ccc17a%7C0%7C0%7C637522667609971209%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=hYy5Cpi06y4T0DpFb4%2FDeo2nEy5Cn3rf3l%2BEO%2FaPP%2FU%3D&reserved=0
> >
> >
> > Attaching the failed boot log - full_boot.log
>
> This was failing in 5.8 already.


> > The patch that fixes the problem - workaround.patch
>
> OK. You are disabling Dual I/O.
>
> > A patch to override read opcode - 001-Debug.patch
> > Failing log with post fixup read opcode update - fail_post_fixup.log
>
> Could you check the SPI wiring on the schematics of your AST2500 dgx board
> ?
>
> If it is single wired, then I suggest a work around like the one attached.


We have MOSI, MISO datalines connected and the workaround is working for us.
But I just wanted to check if anybody got dual mode working with
MX25L25635F,
and what would be the right fix for it in spi-nor.

Thanks,
Shakeeb
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