[U-Boot] [PATCH] sf: Enable FSR polling on N25Q256(A)

Marek Vasut marex at denx.de
Wed Jun 6 18:45:57 UTC 2018


On 05/24/2018 09:58 PM, Marek Vasut wrote:
> The N25Q256(A) datasheet clearly states that this device does have
> a Flag Status Register and does update FSR PEC bit 7 during Program
> and Erase cycles to indicate the cycle is in progress. Enable the
> FSR PEC bit polling on this device to prevent data corruption.
> 
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Jagan Teki <jagan at openedev.com>
> Cc: Tom Rini <trini at konsulko.com>
> ---
>  drivers/mtd/spi/spi_flash_ids.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mtd/spi/spi_flash_ids.c b/drivers/mtd/spi/spi_flash_ids.c
> index 3b8f254ca2..fbc1bb6a5e 100644
> --- a/drivers/mtd/spi/spi_flash_ids.c
> +++ b/drivers/mtd/spi/spi_flash_ids.c
> @@ -130,8 +130,8 @@ const struct spi_flash_info spi_flash_ids[] = {
>  	{"n25q64a",	   INFO(0x20bb17, 0x0,  64 * 1024,   128, RD_FULL | WR_QPP | SECT_4K) },
>  	{"n25q128",	   INFO(0x20ba18, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP) },
>  	{"n25q128a",	   INFO(0x20bb18, 0x0,  64 * 1024,   256, RD_FULL | WR_QPP) },
> -	{"n25q256",	   INFO(0x20ba19, 0x0,  64 * 1024,   512, RD_FULL | WR_QPP | SECT_4K) },
> -	{"n25q256a",	   INFO(0x20bb19, 0x0,  64 * 1024,   512, RD_FULL | WR_QPP | SECT_4K) },
> +	{"n25q256",	   INFO(0x20ba19, 0x0,  64 * 1024,   512, RD_FULL | WR_QPP | E_FSR | SECT_4K) },
> +	{"n25q256a",	   INFO(0x20bb19, 0x0,  64 * 1024,   512, RD_FULL | WR_QPP | E_FSR | SECT_4K) },
>  	{"n25q512",	   INFO(0x20ba20, 0x0,  64 * 1024,  1024, RD_FULL | WR_QPP | E_FSR | SECT_4K) },
>  	{"n25q512a",	   INFO(0x20bb20, 0x0,  64 * 1024,  1024, RD_FULL | WR_QPP | E_FSR | SECT_4K) },
>  	{"n25q1024",	   INFO(0x20ba21, 0x0,  64 * 1024,  2048, RD_FULL | WR_QPP | E_FSR | SECT_4K) },
> 

So, where is this stuff, I don't see it in u-boot/master ?

-- 
Best regards,
Marek Vasut


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