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fix: nand: pxa3xx: Add WA for eliminating flash ready timeout 

add delay before processing the status flags in pxa3xx_nand_irq().

Signed-off-by: David Sniatkiwicz <davidsn@marvell.com>
Reviewed-by: Igal Liberman <igall@marvell.com>
Reviewed-by: Kostya Porotchkin <kostap@marvell.com>
c: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
David Sniatkiwicz 2018-08-29 11:56:18 +03:00 committed by Stefan Roese
parent b7b3f2c8bb
commit e76afd8409
1 changed files with 3 additions and 0 deletions
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3
drivers/mtd/nand/pxa3xx_nand.c
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@ -668,6 +668,9 @@ static irqreturn_t pxa3xx_nand_irq(struct pxa3xx_nand_info *info)
cmd_done = NDSR_CS1_CMDD; cmd_done = NDSR_CS1_CMDD;
} }
/* TODO - find out why we need the delay during write operation. */
ndelay(1);
status = nand_readl(info, NDSR); status = nand_readl(info, NDSR);
if (status & NDSR_UNCORERR) if (status & NDSR_UNCORERR)