linux-kernel - Re: [PATCH] mtd: spi-nor: add support for Microchip 25LC256

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Date:   Fri, 4 May 2018 20:40:13 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Radu Pirea <radu.pirea@...rochip.com>
Cc:     <linux-kernel@...r.kernel.org>, <linux-mtd@...ts.infradead.org>,
        <Zhiqiang.Hou@....com>, <pp@...ix.com>, <richard@....at>,
        <computersforpeace@...il.com>, <dwmw2@...radead.org>,
        <marek.vasut@...il.com>
Subject: Re: [PATCH] mtd: spi-nor: add support for Microchip 25LC256

On Fri, 4 May 2018 18:54:04 +0300
Radu Pirea <radu.pirea@...rochip.com> wrote:

> Added geometry description for Microchip 25LC256 memory.

Same as for the dataflash stuff you posted a few weeks ago: I don't
think this device belongs in the SPI NOR framework.

> 
> Signed-off-by: Radu Pirea <radu.pirea@...rochip.com>
> ---
>  drivers/mtd/devices/m25p80.c  | 3 +++
>  drivers/mtd/spi-nor/spi-nor.c | 3 +++
>  2 files changed, 6 insertions(+)
> 
> diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
> index a4e18f6aaa33..1e359d811261 100644
> --- a/drivers/mtd/devices/m25p80.c
> +++ b/drivers/mtd/devices/m25p80.c
> @@ -372,6 +372,9 @@ static const struct spi_device_id m25p_ids[] = {
>  	{ "mr25h10" },  /*   1 Mib, 40 MHz */
>  	{ "mr25h40" },  /*   4 Mib, 40 MHz */
>  
> +	/* Microchip */
> +	{ "25lc256" },
> +
>  	{ },
>  };
>  MODULE_DEVICE_TABLE(spi, m25p_ids);
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index d445a4d3b770..6341c86be647 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -1076,6 +1076,9 @@ static const struct flash_info spi_nor_ids[] = {
>  	{ "mx66l1g45g",  INFO(0xc2201b, 0, 64 * 1024, 2048, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
>  	{ "mx66l1g55g",  INFO(0xc2261b, 0, 64 * 1024, 2048, SPI_NOR_QUAD_READ) },
>  
> +	/* Microchip */
> +	{ "25lc256", CAT25_INFO(32 * 1024, 1, 64, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) },
> +
>  	/* Micron */
>  	{ "n25q016a",	 INFO(0x20bb15, 0, 64 * 1024,   32, SECT_4K | SPI_NOR_QUAD_READ) },
>  	{ "n25q032",	 INFO(0x20ba16, 0, 64 * 1024,   64, SPI_NOR_QUAD_READ) },