linux-kernel - Re: [PATCH v2] mtd: spi-nor: atmel: add at25sf321 entry

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Message-ID: <ZyDgSRcT79yksuG2@gmail.com>
Date: Tue, 29 Oct 2024 14:16:57 +0100
From: Marcus Folkesson <marcus.folkesson@...il.com>
To: Tudor Ambarus <tudor.ambarus@...aro.org>
Cc: Pratyush Yadav <pratyush@...nel.org>, Michael Walle <mwalle@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>,
	linux-mtd@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mtd: spi-nor: atmel: add at25sf321 entry

Hi Tudor,

On Tue, Oct 29, 2024 at 11:36:17AM +0000, Tudor Ambarus wrote:
> 
> 
> On 10/29/24 11:23 AM, Marcus Folkesson wrote:
> > Add entry for the at25sf321 32Mbit SPI flash.
> > 
> > This flash is populated on a custom board and was tested at
> > 10MHz frequency using the "ti,da830-spi" SPI controller.
> > 
> 
> no sfdp for this one?

No SFDP for this one!
> 
> > Link:
> > https://www.renesas.com/en/document/dst/at25sf321-datasheet?r=1608801
> > 
> > Signed-off-by: Marcus Folkesson <marcus.folkesson@...il.com>
> > ---

[...]

> > diff --git a/drivers/mtd/spi-nor/atmel.c b/drivers/mtd/spi-nor/atmel.c
> > index 45d1153a04a07b7c61f46b117311b24ab695038f..8285a16b253d54ae8c4a5302850244d2248aa755 100644
> > --- a/drivers/mtd/spi-nor/atmel.c
> > +++ b/drivers/mtd/spi-nor/atmel.c
> > @@ -238,6 +238,11 @@ static const struct flash_info atmel_nor_parts[] = {
> >  		.flags = SPI_NOR_HAS_LOCK,
> >  		.no_sfdp_flags = SECT_4K,
> >  		.fixups = &at25fs_nor_fixups
> > +	}, {
> > +		.id = SNOR_ID(0x1f, 0x87, 0x01),
> > +		.name = "at25sf321",
> > +		.size = SZ_4M,
> > +		.no_sfdp_flags = SECT_4K,
> 
> it seems this flash supports dual and quad reads. Do you care to
> add/test these modes?
> 
> you'll need mtd-utils

Sure, not sure how I test it though.
I've added mtd-utils but I do not see any good parameters to set mode?

> 
> >  	},
> >  };
> >  
> > 
> > ---
> > base-commit: 200289db261f0c8131a5756133e9d30966289c3b
> > change-id: 20241018-spi-nor-dc29698dea0f
> > 
> > Best regards,

Best regards,
Marcus Folkesson

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