linux-kernel - Re: [PATCH] mtd: spi-nor: winbond: add support for w25q01jv-im

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Message-ID: <0dde4fa6ddeefa23314dbdcd1dd1b28b@walle.cc>
Date:   Thu, 06 Oct 2022 13:52:33 +0200
From:   Michael Walle <michael@...le.cc>
To:     Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
Cc:     ~sircmpwn/email-test-drive@...ts.sr.ht, patrick@...cx.xyz,
        garnermic@...com, Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <pratyush@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: spi-nor: winbond: add support for w25q01jv-im

Hi,

Am 2022-10-06 09:08, schrieb Delphine CC Chiu:
> Add support for winbond w25q01jv-im chip.
> 
> Signed-off-by: Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>
> ---
>  drivers/mtd/spi-nor/winbond.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/winbond.c 
> b/drivers/mtd/spi-nor/winbond.c
> index ffaa24055259..2b02b05ceb0a 100644
> --- a/drivers/mtd/spi-nor/winbond.c
> +++ b/drivers/mtd/spi-nor/winbond.c
> @@ -139,6 +139,9 @@ static const struct flash_info winbond_nor_parts[] 
> = {
>  	{ "w25q512jvq", INFO(0xef4020, 0, 64 * 1024, 1024)
>  		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
>  			      SPI_NOR_QUAD_READ) },
> +	{ "w25q01jv-im", INFO(0xef7021, 0, 64 * 1024, 2048)

The name should be w25q01jvm.

> +		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ |
> +			      SPI_NOR_QUAD_READ) },

That flash should support SFDP, so please try the following:
+	{ "w25q01jvm", INFO(0xef7021, 0, 0, 0) PARSE_SFDP },

Also, we require an SFDP dump for new flash submissions, see [1].

-michael

[1] 
https://lore.kernel.org/linux-mtd/4304e19f3399a0a6e856119d01ccabe0@walle.cc/