linux-kernel - Re: [PATCH 1/3] mtd: rawnand: hynix: Add support for H27UCG8T2FTR-BC MLC NAND

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Date:   Fri, 30 Dec 2022 13:45:07 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] mtd: rawnand: hynix: Add support for
 H27UCG8T2FTR-BC MLC NAND

Hi Samuel,

samuel@...lland.org wrote on Thu, 29 Dec 2022 13:09:03 -0600:

> H27UCG8T2FTR-BC is similar to the already-supported H27UCG8T2ETR-BC, but
> reports a different ID.

Can you provide a datasheet for this part? I am surprised by the page
size. In general anyway, it's best to provide a link when adding
support for a new component.

Also, for your two series, no need to resend this time, but please use
git-format-patch and git-send-email to create your series, so that all
the patches are answers of the cover letter. It helps keeping all
patches and answers in the series packed together.

Thanks!
Miquèl

> Signed-off-by: Samuel Holland <samuel@...lland.org>
> ---
> 
>  drivers/mtd/nand/raw/nand_hynix.c | 4 ++++
>  drivers/mtd/nand/raw/nand_ids.c   | 4 ++++
>  2 files changed, 8 insertions(+)
> 
> diff --git a/drivers/mtd/nand/raw/nand_hynix.c b/drivers/mtd/nand/raw/nand_hynix.c
> index 0d4d4bbfdece..836f152612ab 100644
> --- a/drivers/mtd/nand/raw/nand_hynix.c
> +++ b/drivers/mtd/nand/raw/nand_hynix.c
> @@ -721,6 +721,10 @@ static int hynix_nand_init(struct nand_chip *chip)
>  		     sizeof("H27UCG8T2ETR-BC") - 1))
>  		h27ucg8t2etrbc_init(chip);
>  
> +	if (!strncmp("H27UCG8T2FTR-BC", chip->parameters.model,
> +		     sizeof("H27UCG8T2FTR-BC") - 1))
> +		h27ucg8t2etrbc_init(chip);
> +
>  	ret = hynix_nand_rr_init(chip);
>  	if (ret)
>  		hynix_nand_cleanup(chip);
> diff --git a/drivers/mtd/nand/raw/nand_ids.c b/drivers/mtd/nand/raw/nand_ids.c
> index dacc5529b3df..167183ccb9e9 100644
> --- a/drivers/mtd/nand/raw/nand_ids.c
> +++ b/drivers/mtd/nand/raw/nand_ids.c
> @@ -55,6 +55,10 @@ struct nand_flash_dev nand_flash_ids[] = {
>  		{ .id = {0xad, 0xde, 0x14, 0xa7, 0x42, 0x4a} },
>  		  SZ_16K, SZ_8K, SZ_4M, NAND_NEED_SCRAMBLING, 6, 1664,
>  		  NAND_ECC_INFO(40, SZ_1K) },
> +	{"H27UCG8T2FTR-BC 64G 3.3V 8-bit",
> +		{ .id = {0xad, 0xde, 0x14, 0xab, 0x42, 0x4a} },
> +		  SZ_16K, SZ_8K, SZ_4M, NAND_NEED_SCRAMBLING, 6, 1664,
> +		  NAND_ECC_INFO(40, SZ_1K) },
>  	{"TH58NVG2S3HBAI4 4G 3.3V 8-bit",
>  		{ .id = {0x98, 0xdc, 0x91, 0x15, 0x76} },
>  		  SZ_2K, SZ_512, SZ_128K, 0, 5, 128, NAND_ECC_INFO(8, SZ_512) },