[PATCH] mtd: atmel_nand: increase chip_delay
Josh Wu
josh.wu at atmel.com
Wed Jul 30 02:36:18 PDT 2014
Hi, Raphael
On 7/29/2014 9:27 PM, Raphael Poggi wrote:
> Some nand with 8k page size like Micron MT29F32G08ABAAAWP need more than 20us.
>
> Signed-off-by: Raphaël Poggi <poggi.raph at gmail.com>
> ---
> drivers/mtd/nand/atmel_nand.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
> index e321c56..77bd877 100644
> --- a/drivers/mtd/nand/atmel_nand.c
> +++ b/drivers/mtd/nand/atmel_nand.c
> @@ -2099,7 +2099,7 @@ static int atmel_nand_probe(struct platform_device *pdev)
> }
>
> nand_chip->ecc.mode = host->board.ecc_mode;
> - nand_chip->chip_delay = 20; /* 20us command delay time */
> + nand_chip->chip_delay = 40; /* 40us command delay time */
>
> if (host->board.bus_width_16) /* 16-bit bus width */
> nand_chip->options |= NAND_BUSWIDTH_16;
I just post a patch [1] days ago which does almost the same thing to
support 4k-page nand flash.
personally I am fine with your patch.
Brain, you only need to take care this patch. And drop my patch [1].
[1] http://patchwork.ozlabs.org/patch/372406/
Thanks.
Best Regards,
Josh Wu
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