linux-kernel - Re: Question regarding Linux-6.3.5 and Sunxi A20 NAND/NFC support

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Date:   Fri, 18 Aug 2023 14:41:08 +1000
From:   John Watts <contact@...kia.org>
To:     Fawad Lateef <fawadlateef@...il.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux sunXi <linux-sunxi@...ts.linux.dev>,
        kernelnewbies <kernelnewbies@...nelnewbies.org>,
        boris.brezillon@...labora.com
Subject: Re: Question regarding Linux-6.3.5 and Sunxi A20 NAND/NFC support

On Thu, Aug 17, 2023 at 10:21:35PM +0100, Fawad Lateef wrote:
> Hi John,
> 
> Thanks for your help. I found the reason for my issue. I defined the
> pinctrl information under the "soc" next to "nfc" entry in
> sunxi-a20.dtsi which was messing it up.
> 
> I moved them inside the "pio" dtsi block and NAND is detected now.

Congratulations!

> Though almost all blocks are reported as bad-blocks.  I am thinking
> that it's happening as I don't have partition information defined in
> DTS. Do you think that this is the reason for bad-blocks reporting?

I don't have much knowledge here but you might want to confirm the
contents of your bad block table is being read and has correct values.

This might help: https://linux-sunxi.org/Mainline_NAND_Howto

> Regards,
> 
> Fawad Lateef

John.