linux-kernel - Re: [PATCH v2 2/2] spi-nor: add support for is25wp256

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Message-ID: <ef174850-93df-6032-c742-68237c37afde@microchip.com>
Date:   Wed, 13 Feb 2019 17:27:01 +0000
From:   <Tudor.Ambarus@...rochip.com>
To:     <palmer@...ive.com>, <marek.vasut@...il.com>
CC:     <wesley@...ive.com>, <richard@....at>,
        <linux-kernel@...r.kernel.org>, <bbrezillon@...nel.org>,
        <linux-mtd@...ts.infradead.org>, <paul.walmsley@...ive.com>,
        <computersforpeace@...il.com>, <dwmw2@...radead.org>
Subject: Re: [PATCH v2 2/2] spi-nor: add support for is25wp256

Hi,

This one looks pretty good. You'll have to start the patch's subject with "mtd:
spi-nor:" instead of just "spi-nor".

When in doubt, run git log --oneline on the file that you are modifying and see
how previous patches are prefixing the subject.

On 08/07/2018 10:40 PM, Palmer Dabbelt wrote:
> From: "Wesley W. Terpstra" <wesley@...ive.com>
> 
> This is used of the HiFive Unleashed development board, and follows the
> pattern of similar ISSI devices already listed.
>
Please add a comment and let us know how you tested the flash, it's always
comfortable to see that new support was actually tested.

> Signed-off-by: Wesley W. Terpstra <wesley@...ive.com>
> Signed-off-by: Palmer Dabbelt <palmer@...ive.com>
> ---
>  drivers/mtd/spi-nor/spi-nor.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index aab93463a5e7..f10017b4543d 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -1072,6 +1072,8 @@ static const struct flash_info spi_nor_ids[] = {
>  			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
>  	{ "is25wp128",  INFO(0x9d7018, 0, 64 * 1024, 256,
>  			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
> +	{ "is25wp256",  INFO(0x9d7019, 0, 64 * 1024, 512,
> +	                SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },

You missed the SPI_NOR_4B_OPCODES flag. The flash has 4B opcodes, let's use them.

Cheers,
ta