linux-kernel - [PATCH] mtd: spinand: winbond: add support for W25N01KV

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Message-ID: <20240805175125.6658-1-robimarko@gmail.com>
Date: Mon,  5 Aug 2024 19:51:02 +0200
From: Robert Marko <robimarko@...il.com>
To: miquel.raynal@...tlin.com,
	richard@....at,
	vigneshr@...com,
	linux-mtd@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Robert Marko <robimarko@...il.com>
Subject: [PATCH] mtd: spinand: winbond: add support for W25N01KV

Add support for Winbond W25N01KV 1Gbit SPI-NAND.

It has 4-bit on-die ECC.

Signed-off-by: Robert Marko <robimarko@...il.com>
---
 drivers/mtd/nand/spi/winbond.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c
index ba7c813b9542..f3bb81d7e460 100644
--- a/drivers/mtd/nand/spi/winbond.c
+++ b/drivers/mtd/nand/spi/winbond.c
@@ -76,6 +76,18 @@ static int w25m02gv_select_target(struct spinand_device *spinand,
 	return spi_mem_exec_op(spinand->spimem, &op);
 }
 
+static int w25n01kv_ooblayout_ecc(struct mtd_info *mtd, int section,
+				  struct mtd_oob_region *region)
+{
+	if (section > 3)
+		return -ERANGE;
+
+	region->offset = 64 + (8 * section);
+	region->length = 7;
+
+	return 0;
+}
+
 static int w25n02kv_ooblayout_ecc(struct mtd_info *mtd, int section,
 				  struct mtd_oob_region *region)
 {
@@ -100,6 +112,11 @@ static int w25n02kv_ooblayout_free(struct mtd_info *mtd, int section,
 	return 0;
 }
 
+static const struct mtd_ooblayout_ops w25n01kv_ooblayout = {
+	.ecc = w25n01kv_ooblayout_ecc,
+	.free = w25n02kv_ooblayout_free,
+};
+
 static const struct mtd_ooblayout_ops w25n02kv_ooblayout = {
 	.ecc = w25n02kv_ooblayout_ecc,
 	.free = w25n02kv_ooblayout_free,
@@ -163,6 +180,15 @@ static const struct spinand_info winbond_spinand_table[] = {
 					      &update_cache_variants),
 		     0,
 		     SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL)),
+	SPINAND_INFO("W25N01KV",
+		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xae, 0x21),
+		     NAND_MEMORG(1, 2048, 96, 64, 1024, 20, 1, 1, 1),
+		     NAND_ECCREQ(4, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&w25n01kv_ooblayout, w25n02kv_ecc_get_status)),
 	SPINAND_INFO("W25N02KV",
 		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xaa, 0x22),
 		     NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
-- 
2.45.2