linux-kernel - Re: [PATCH 1/2] mtd: spinand: Support serial NAND for reading two bytes ID

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Date: Mon, 1 Jul 2024 11:43:07 +0200
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Cheng Ming Lin <linchengming884@...il.com>
Cc: vigneshr@...com, richard@....at, linux-mtd@...ts.infradead.org,
 linux-kernel@...r.kernel.org, alvinzhou@...c.com.tw, leoyu@...c.com.tw,
 Cheng Ming Lin <chengminglin@...c.com.tw>
Subject: Re: [PATCH 1/2] mtd: spinand: Support serial NAND for reading two
 bytes ID

Hi,

linchengming884@...il.com wrote on Fri, 28 Jun 2024 16:54:43 +0800:

> From: Cheng Ming Lin <chengminglin@...c.com.tw>
> 
> Adding the Device ID 2 on Macronix Serial Flash.
> 
> When the number of flashes increases, we need to utilize
> Device ID 2 to distinguish between different flashes.
> 
> These flashes have been validated on Xilinx zynq-picozed
> board which included Macronix SPI Host.
> 
> Signed-off-by: Cheng Ming Lin <chengminglin@...c.com.tw>
> ---

...

>  	SPINAND_INFO("MX35UF1GE4AD",
> -		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x96),
> +		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x96, 0x03),
>  		     NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
>  		     NAND_ECCREQ(8, 512),
>  		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
> @@ -289,7 +288,7 @@ static const struct spinand_info macronix_spinand_table[] = {
>  		     SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
>  				     mx35lf1ge4ab_ecc_get_status)),
>  	SPINAND_INFO("MX35UF1GE4AC",
> -		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x92),
> +		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x92, 0x01),
>  		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
>  		     NAND_ECCREQ(4, 512),
>  		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
> @@ -298,7 +297,6 @@ static const struct spinand_info macronix_spinand_table[] = {
>  		     SPINAND_HAS_QE_BIT,
>  		     SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
>  				     mx35lf1ge4ab_ecc_get_status)),
> -

This is style, and if you care should be in another patch.

>  	SPINAND_INFO("MX31LF2GE4BC",
>  		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x2e),
>  		     NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
> @@ -309,7 +307,7 @@ static const struct spinand_info macronix_spinand_table[] = {
>  		     SPINAND_HAS_QE_BIT,
>  		     SPINAND_ECCINFO(&mx35lfxge4ab_ooblayout,
>  				     mx35lf1ge4ab_ecc_get_status)),
> -	SPINAND_INFO("MX3UF2GE4BC",
> +	SPINAND_INFO("MX31UF2GE4BC",

This is a fix that should have the right tags (stable/fixes) and be in
another patch.

Also, maybe you want this patch content to be backported. If it's the
case, please add the necessary tags here as well.

>  		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xae),
>  		     NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 1, 1, 1),
>  		     NAND_ECCREQ(8, 512),


Thanks,
Miquèl