mtd: rawnand: stm32_fmc2: use timings.mode instead of checking tRC_min

Use timings.mode value instead of checking tRC_min timing
for EDO mode support.

Signed-off-by: Christophe Kerello <[email protected]>
Fixes: 2cd457f ("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver")
Cc: [email protected] #v5.10+
Reviewed-by: Tudor Ambarus <[email protected]>
Signed-off-by: Miquel Raynal <[email protected]>
Link: https://lore.kernel.org/linux-mtd/[email protected]

Author: Christophe Kerello

drivers/mtd/nand/raw/stm32_fmc2_nand.c

@@ -1531,7 +1531,7 @@ static int stm32_fmc2_nfc_setup_interface(struct nand_chip *chip, int chipnr,
 	if (IS_ERR(sdrt))
 		return PTR_ERR(sdrt);
 
-	if (sdrt->tRC_min < 30000)
+	if (conf->timings.mode > 3)
 		return -EOPNOTSUPP;
 
 	if (chipnr == NAND_DATA_IFACE_CHECK_ONLY)