| Message ID | 1406020351-23280-1-git-send-email-josh.wu@atmel.com |
|---|---|
| State | Superseded |
| Headers | show |
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index e321c56..371afdd 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -2099,7 +2099,11 @@ 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 */ + + /* For support 4k-page flash, incease the delay time to 25us. + * In P.108 of MT29F8G08ABABA datasheet, tR max is 25us. + */ + nand_chip->chip_delay = 25; if (host->board.bus_width_16) /* 16-bit bus width */ nand_chip->options |= NAND_BUSWIDTH_16;
For MT29F8G08ABABA nand flash, the time read a page (tR) is 25us. To support it, we need increase the chip_delay to 25us. Signed-off-by: Josh Wu <josh.wu@atmel.com> --- drivers/mtd/nand/atmel_nand.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)