linux-kernel - [PATCH v3 1/2] mtd: rawnand: stm32_fmc2: remove unsupported EDO mode

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Message-ID: <20230328155819.225521-2-christophe.kerello@foss.st.com>
Date:   Tue, 28 Mar 2023 17:58:18 +0200
From:   Christophe Kerello <christophe.kerello@...s.st.com>
To:     <miquel.raynal@...tlin.com>, <richard@....at>, <vigneshr@...com>
CC:     <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Christophe Kerello <christophe.kerello@...s.st.com>,
        <stable@...r.kernel.org>, Tudor Ambarus <tudor.ambarus@...aro.org>
Subject: [PATCH v3 1/2] mtd: rawnand: stm32_fmc2: remove unsupported EDO mode

Remove the EDO mode support from as the FMC2 controller does not
support the feature.

Signed-off-by: Christophe Kerello <christophe.kerello@...s.st.com>
Fixes: 2cd457f328c1 ("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver")
Cc: stable@...r.kernel.org #v5.4+
Reviewed-by: Tudor Ambarus <tudor.ambarus@...aro.org>
---
Changes in v3:
 - The commit message has been reworked
 - Cc to stable added
 - Tudor Reviewed-by added

 drivers/mtd/nand/raw/stm32_fmc2_nand.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
index 5d627048c420..3abb63d00a0b 100644
--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
@@ -1531,6 +1531,9 @@ 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)
+		return -EOPNOTSUPP;
+
 	if (chipnr == NAND_DATA_IFACE_CHECK_ONLY)
 		return 0;
 
-- 
2.25.1