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Date:   Tue, 28 Nov 2023 09:39:13 +0000
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Subject: Re: [PATCH] mtd: spi-nor: stop printing superfluous debug info
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To:     liao jaime <jaimeliao.tw@gmail.com>,
        Michael Walle <michael@walle.cc>
Cc:     Miquel Raynal <miquel.raynal@bootlin.com>, jaimeliao@mxic.com.tw,
        pratyush@kernel.org, richard@nod.at, linux-mtd@lists.infradead.org,
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From:   Tudor Ambarus <tudor.ambarus@linaro.org>
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cut

>>> Maybe we don't need this at all, as long as one message remains about
>>> the JEDEC ID, but keep in mind that spi-nors are commonly storing the
>>> rootfs and if your spi-nor does not boot you don't have a userspace yet
>>> and all the debugfs entries are purely useless.
>>
>> Good point.
>>
>> Just curious, do you know any boards which has the rootfs writable on
>> the spi-nor flash?
> I am also interested.
> 

Having the rootfs stored on SPI NOR is a poor design decision as you're
better of with a NAND, which is cheaper and faster on writes. I tried in
the past a ubifs on top of a large (64 and 128MB) SPI NOR flash. But
they were plug-able flashes, not something that is always tied to the
board. Microchip's sama7g5ek comes with a 128MB macronix SPI NOR flash
populated. But there are other vendors that provide large SPI NORs if
really needed.

Cheers,
ta