linux-kernel - [PATCH] mtd: spinand: esmt: add support for F50L1G41LC

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Message-ID: <799b34e6b45f1029890f80d587a90a4915aced9e.1763342973.git.daniel@makrotopia.org>
Date: Mon, 17 Nov 2025 02:54:19 +0000
From: Daniel Golle <daniel@...rotopia.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Tudor Ambarus <tudor.ambarus@...aro.org>,
	Mikhail Kshevetskiy <mikhail.kshevetskiy@...sys.eu>,
	Martin Kurbanov <mmkurbanov@...utedevices.com>,
	Takahiro Kuwano <Takahiro.Kuwano@...ineon.com>,
	Cheng Ming Lin <chengminglin@...c.com.tw>,
	Daniel Golle <daniel@...rotopia.org>,
	George Moussalem <george.moussalem@...look.com>,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] mtd: spinand: esmt: add support for F50L1G41LC

This adds support for ESMT F50L1G41LC, which appears to be an updated
version of the already supported F50L1G41LB.
Add esmt_8c SPI_NAND manufacturer to account for the newly used vendor
ID with support for the ESMT F50L1G41LC chip.

Link: https://github.com/openwrt/openwrt/pull/15214#issuecomment-3514824435
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/mtd/nand/spi/core.c |  1 +
 drivers/mtd/nand/spi/esmt.c | 24 ++++++++++++++++++++++++
 include/linux/mtd/spinand.h |  1 +
 3 files changed, 26 insertions(+)

diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index f92133b8e1a60..d207286572d87 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -1227,6 +1227,7 @@ static const struct nand_ops spinand_ops = {
 static const struct spinand_manufacturer *spinand_manufacturers[] = {
 	&alliancememory_spinand_manufacturer,
 	&ato_spinand_manufacturer,
+	&esmt_8c_spinand_manufacturer,
 	&esmt_c8_spinand_manufacturer,
 	&fmsh_spinand_manufacturer,
 	&foresee_spinand_manufacturer,
diff --git a/drivers/mtd/nand/spi/esmt.c b/drivers/mtd/nand/spi/esmt.c
index 9a9325c0bc497..e60e4ac1fd6fb 100644
--- a/drivers/mtd/nand/spi/esmt.c
+++ b/drivers/mtd/nand/spi/esmt.c
@@ -12,6 +12,7 @@
 
 /* ESMT uses GigaDevice 0xc8 JECDEC ID on some SPI NANDs */
 #define SPINAND_MFR_ESMT_C8			0xc8
+#define SPINAND_MFR_ESMT_8C			0x8c
 
 #define ESMT_F50L1G41LB_CFG_OTP_PROTECT		BIT(7)
 #define ESMT_F50L1G41LB_CFG_OTP_LOCK		\
@@ -184,6 +185,21 @@ static const struct spinand_fact_otp_ops f50l1g41lb_fact_otp_ops = {
 	.read = spinand_fact_otp_read,
 };
 
+
+static const struct spinand_info esmt_8c_spinand_table[] = {
+	SPINAND_INFO("F50L1G41LC",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x2C),
+		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+		     NAND_ECCREQ(1, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL),
+		     SPINAND_USER_OTP_INFO(28, 2, &f50l1g41lb_user_otp_ops),
+		     SPINAND_FACT_OTP_INFO(2, 0, &f50l1g41lb_fact_otp_ops)),
+};
+
 static const struct spinand_info esmt_c8_spinand_table[] = {
 	SPINAND_INFO("F50L1G41LB",
 		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01, 0x7f,
@@ -224,6 +240,14 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
 static const struct spinand_manufacturer_ops esmt_spinand_manuf_ops = {
 };
 
+const struct spinand_manufacturer esmt_8c_spinand_manufacturer = {
+	.id = SPINAND_MFR_ESMT_8C,
+	.name = "ESMT",
+	.chips = esmt_8c_spinand_table,
+	.nchips = ARRAY_SIZE(esmt_8c_spinand_table),
+	.ops = &esmt_spinand_manuf_ops,
+};
+
 const struct spinand_manufacturer esmt_c8_spinand_manufacturer = {
 	.id = SPINAND_MFR_ESMT_C8,
 	.name = "ESMT",
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index 927c10d787695..ce76f5c632e17 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -354,6 +354,7 @@ struct spinand_manufacturer {
 /* SPI NAND manufacturers */
 extern const struct spinand_manufacturer alliancememory_spinand_manufacturer;
 extern const struct spinand_manufacturer ato_spinand_manufacturer;
+extern const struct spinand_manufacturer esmt_8c_spinand_manufacturer;
 extern const struct spinand_manufacturer esmt_c8_spinand_manufacturer;
 extern const struct spinand_manufacturer fmsh_spinand_manufacturer;
 extern const struct spinand_manufacturer foresee_spinand_manufacturer;
-- 
2.51.2