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Message-ID: <3f51282076fb3e209aa4cae7bc0a4c46@walle.cc>
Date:   Thu, 01 Dec 2022 23:12:39 +0100
From:   Michael Walle <michael@...le.cc>
To:     Nathan Barrett-Morrison <nathan.morrison@...esys.com>
Cc:     greg.malysa@...esys.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 v3 3/3] mtd: spi-nor: Add support for IS25LX256 operating
 in 1S-8S-8S octal read mode

Am 2022-12-01 22:27, schrieb Nathan Barrett-Morrison:
> This adds the IS25LX256 chip into the ISSI flash_info parts table
> 
> Signed-off-by: Nathan Barrett-Morrison <nathan.morrison@...esys.com>
> ---
>  drivers/mtd/spi-nor/issi.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/issi.c b/drivers/mtd/spi-nor/issi.c
> index 89a66a19d754..98cc5e1d9c18 100644
> --- a/drivers/mtd/spi-nor/issi.c
> +++ b/drivers/mtd/spi-nor/issi.c
> @@ -74,6 +74,9 @@ static const struct flash_info issi_nor_parts[] = {
>  		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ)
>  		FIXUP_FLAGS(SPI_NOR_4B_OPCODES)
>  		.fixups = &is25lp256_fixups },
> +	{ "is25lx256", INFO(0x9d5a19, 0, 128 * 1024, 256)

Please use INFO(0x9d5a19, 0, 0, 0)

> +		NO_SFDP_FLAGS(SECT_4K | SPI_NOR_4B_OPCODES |
> +			      SPI_NOR_OCTAL_READ_1_8_8) },

Neither of these flags should be needed. As mentioned before,
you'd need a fixups for the missing 1-1-8 and 1-8-8 fast read ops.

-michael

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