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>

drivers/mtd/nand/pxa3xx_nand.c

@@ -668,6 +668,9 @@ static irqreturn_t pxa3xx_nand_irq(struct pxa3xx_nand_info *info)
 		cmd_done        = NDSR_CS1_CMDD;
 	}
 
+	/* TODO - find out why we need the delay during write operation. */
+	ndelay(1);
+
 	status = nand_readl(info, NDSR);
 
 	if (status & NDSR_UNCORERR)