[PATCH linux dev-4.7] mtd: spi-nor: add SECT_4K to mx25l25635e

[Cédric Le Goater]

On 10/21/2016 10:44 AM, Cédric Le Goater wrote:
> The current setting is to erase blocks (64KB) but the chip supports
> sector (4KB) erase and it is currently a problem to erase "partitions"
> which are smaller than the block size (64KB), the GUARD partition for
> instance.

There are few other macronixs that would need a similar change but 
this has an impact on existing jffs2 filesystems on the flash. I am 
not sure we will be able to merge this change in mainline.

C.


> Signed-off-by: Cédric Le Goater <clg at kaod.org>
> ---
>  drivers/mtd/spi-nor/spi-nor.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> Index: linux-openbmc-4.7.git/drivers/mtd/spi-nor/spi-nor.c
> ===================================================================
> --- linux-openbmc-4.7.git.orig/drivers/mtd/spi-nor/spi-nor.c
> +++ linux-openbmc-4.7.git/drivers/mtd/spi-nor/spi-nor.c
> @@ -855,7 +855,7 @@ static const struct flash_info spi_nor_i
>  	{ "mx25u6435f",  INFO(0xc22537, 0, 64 * 1024, 128, SECT_4K) },
>  	{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
>  	{ "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) },
> -	{ "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) },
> +	{ "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, SECT_4K) },
>  	{ "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) },
>  	{ "mx66l51235l", INFO(0xc2201a, 0, 64 * 1024, 1024, SPI_NOR_QUAD_READ) },
>  	{ "mx66l1g45g",  INFO(0xc2201b, 0, 64 * 1024, 2048, SECT_4K | SPI_NOR_QUAD_READ) },
>