From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file

---
 kernel/drivers/mtd/nand/raw/stm32_fmc2_nand.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/kernel/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 550bda4..c0c47f3 100644
--- a/kernel/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/kernel/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -1525,6 +1525,9 @@
 	if (IS_ERR(sdrt))
 		return PTR_ERR(sdrt);
 
+	if (conf->timings.mode > 3)
+		return -EOPNOTSUPP;
+
 	if (chipnr == NAND_DATA_IFACE_CHECK_ONLY)
 		return 0;
 

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