Re: [PATCH] mtd: m25p80: Add support for Micron N25Q512A memory

[Brian Norris <computersforpeace@gmail.com>]

+ Marek

On Wed, Sep 04, 2013 at 10:16:56AM +0530, Priyanka Jain wrote:
> Micron N25Q512A is a spi flash memory with following features:
> -64MB size, 1.8V, Mulitple I/O, 4KB Sector erase memory.
> -Memory is organised as 1024(64KB) main sectors.
> -Each sector is divided into 256 pages.
> -Register set/Opcodes are similar to other N25Q family products.
> 
> Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
> ---
>  drivers/mtd/devices/m25p80.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
> index 26b14f9..94e3b53 100644
> --- a/drivers/mtd/devices/m25p80.c
> +++ b/drivers/mtd/devices/m25p80.c
> @@ -774,6 +774,7 @@ static const struct spi_device_id m25p_ids[] = {
>  	{ "n25q128a11",  INFO(0x20bb18, 0, 64 * 1024, 256, 0) },
>  	{ "n25q128a13",  INFO(0x20ba18, 0, 64 * 1024, 256, 0) },
>  	{ "n25q256a", INFO(0x20ba19, 0, 64 * 1024, 512, SECT_4K) },
> +	{ "n25q512a", INFO(0x20bb20, 0, 64 * 1024, 512, SECT_4K) },

This device actually has the same ID as Micron's next line (MT25QL512A).
They have the same geometry, so maybe that's not a problem.

(FWIW, I haven't gotten either flash working here, but I'm suspecting
board problems.)

>  
>  	/* PMC */
>  	{ "pm25lv512", INFO(0, 0, 32 * 1024, 2, SECT_4K_PMC) },

I'll give Marek a chance to look at this, then I'll take this into
l2-mtd.git if there are no objections.

Brian