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From: <Tudor.Ambarus@microchip.com>
To: <robimarko@gmail.com>, <marek.vasut@gmail.com>,
	<dwmw2@infradead.org>, <computersforpeace@gmail.com>,
	<bbrezillon@kernel.org>, <richard@nod.at>,
	<linux-mtd@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	<bbrezillon@kernel.org>
Subject: Re: [PATCH] mtd: spi-nor: Add Winbond w25q16jv support
Date: Wed, 20 Feb 2019 20:29:07 +0000
Message-ID: <97e48e85-9700-53e3-0f7a-eeac6f93f721@microchip.com> (raw)
In-Reply-To: <20190214205723.9011-1-robimarko@gmail.com>

Hi, Robert,

On 02/14/2019 10:57 PM, Robert Marko wrote:
> Datasheet: https://www.winbond.com/resource-files/w25q16jv%20spi%20revg%2003222018%20plus.pdf
> 
> Testing done on Mikrotik Routerboard RB450Gx4 board under 4.19.19 kernel.

It is preferable to do the test on spi-nor/next
> 
> Test board does not support Dual or Quad modes.
> 
> Signed-off-by: Robert Marko <robimarko@gmail.com>
> ---
>  drivers/mtd/spi-nor/spi-nor.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index 6e13bbd1aaa5..0e958f48db1b 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -1975,6 +1975,11 @@ static const struct flash_info spi_nor_ids[] = {
>  			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
>  			SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
>  	},
> +	{
> +		"w25q16jv", INFO(0xef7015, 0, 64 * 1024,  32,
> +			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
> +			SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)

You'll need a way to differentiate between W25Q16JV-IQ/JQ and W25Q16JV-IM/JM.

And I would prefer to have the new entries ordered alphabetically as much as
possible. This one should fit just before w25q20cl. Manufacturers are naming
flashes based on a product identification system. The flashes are presented in
alphabetical order, we should do the same.

Cheers,
ta
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Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-14 20:57 Robert Marko
2019-02-20 20:29 ` Tudor.Ambarus [this message]
2019-02-21 20:58   ` Robert Marko
2019-06-13 14:33     ` Tudor.Ambarus

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