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* [PATCH] mtd: spinand: add support for additional Dosilicon models
@ 2026-02-17 21:14 Qing Wu
  0 siblings, 0 replies; only message in thread
From: Qing Wu @ 2026-02-17 21:14 UTC (permalink / raw)
  To: linux-mtd; +Cc: Qing Wu

Add support for additional Dosilicon SPI NAND chips.

Datasheets for chips included in this patch: https://www.dosilicon.com/SPI%20NAND%20Flash.html

Tested on a TP-Link TL-7DR7250 with a Dosilicon DS35Q1GB (0xE5 0xF1)

Signed-off-by: Qing Wu <ses1er@gmail.com>
---
 drivers/mtd/nand/spi/dosilicon.c | 219 ++++++++++++++++++++++++++++---
 1 file changed, 204 insertions(+), 15 deletions(-)

diff --git a/drivers/mtd/nand/spi/dosilicon.c b/drivers/mtd/nand/spi/dosilicon.c
index f99899866ceb..790671b65060 100644
--- a/drivers/mtd/nand/spi/dosilicon.c
+++ b/drivers/mtd/nand/spi/dosilicon.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
  * Author: Ahmed Naseef <naseefkm@gmail.com>
+ * Additions: Qing Wu <ses1er@gmail.com>
  */
 
 #include <linux/device.h>
@@ -9,21 +10,27 @@
 
 #define SPINAND_MFR_DOSILICON        0xE5
 
+#define DOSICON_STATUS_ECC_MASK			GENMASK(6, 4)
+#define DOSICON_STATUS_ECC_NO_BITFLIPS		(0 << 4)
+#define DOSICON_STATUS_ECC_1TO3_BITFLIPS	(1 << 4)
+#define DOSICON_STATUS_ECC_4TO6_BITFLIPS	(3 << 4)
+#define DOSICON_STATUS_ECC_7TO8_BITFLIPS	(5 << 4)
+
 static SPINAND_OP_VARIANTS(read_cache_variants,
-		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_4S_OP(0, 1, NULL, 0, 0),
-		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_2S_OP(0, 1, NULL, 0, 0),
-		SPINAND_PAGE_READ_FROM_CACHE_FAST_1S_1S_1S_OP(0, 1, NULL, 0, 0),
-		SPINAND_PAGE_READ_FROM_CACHE_1S_1S_1S_OP(0, 1, NULL, 0, 0));
+		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
+		SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
 
 static SPINAND_OP_VARIANTS(write_cache_variants,
-		SPINAND_PROG_LOAD_1S_1S_4S_OP(true, 0, NULL, 0),
-		SPINAND_PROG_LOAD_1S_1S_1S_OP(true, 0, NULL, 0));
+		SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
+		SPINAND_PROG_LOAD(true, 0, NULL, 0));
 
 static SPINAND_OP_VARIANTS(update_cache_variants,
-		SPINAND_PROG_LOAD_1S_1S_4S_OP(false, 0, NULL, 0),
-		SPINAND_PROG_LOAD_1S_1S_1S_OP(false, 0, NULL, 0));
+		SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
+		SPINAND_PROG_LOAD(false, 0, NULL, 0));
 
-static int ds35xx_ooblayout_ecc(struct mtd_info *mtd, int section,
+static int ds35xxga_ooblayout_ecc(struct mtd_info *mtd, int section,
 				struct mtd_oob_region *region)
 {
 	if (section > 3)
@@ -35,7 +42,7 @@ static int ds35xx_ooblayout_ecc(struct mtd_info *mtd, int section,
 	return 0;
 }
 
-static int ds35xx_ooblayout_free(struct mtd_info *mtd, int section,
+static int ds35xxga_ooblayout_free(struct mtd_info *mtd, int section,
 				 struct mtd_oob_region *region)
 {
 	if (section > 3)
@@ -53,11 +60,67 @@ static int ds35xx_ooblayout_free(struct mtd_info *mtd, int section,
 	return 0;
 }
 
-static const struct mtd_ooblayout_ops ds35xx_ooblayout = {
-	.ecc = ds35xx_ooblayout_ecc,
-	.free = ds35xx_ooblayout_free,
+static const struct mtd_ooblayout_ops ds35xxga_ooblayout = {
+	.ecc = ds35xxga_ooblayout_ecc,
+	.free = ds35xxga_ooblayout_free,
 };
 
+static int ds35xxgb_ooblayout_ecc(struct mtd_info *mtd, int section,
+				  struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	region->offset = 64;
+	region->length = 64;
+
+	return 0;
+}
+
+static int ds35xxgb_ooblayout_free(struct mtd_info *mtd, int section,
+				   struct mtd_oob_region *region)
+{
+	if (section)
+		return -ERANGE;
+
+	/* Reserve 1 bytes for the BBM. */
+	region->offset = 1;
+	region->length = 63;
+
+	return 0;
+}
+
+static const struct mtd_ooblayout_ops ds35xxgb_ooblayout = {
+	.ecc = ds35xxgb_ooblayout_ecc,
+	.free = ds35xxgb_ooblayout_free,
+};
+
+static int ds35xxgb_ecc_get_status(struct spinand_device *spinand,
+				   u8 status)
+{
+	switch (status & DOSICON_STATUS_ECC_MASK) {
+	case STATUS_ECC_NO_BITFLIPS:
+		return 0;
+
+	case STATUS_ECC_UNCOR_ERROR:
+		return -EBADMSG;
+
+	case DOSICON_STATUS_ECC_1TO3_BITFLIPS:
+		return 3;
+
+	case DOSICON_STATUS_ECC_4TO6_BITFLIPS:
+		return 6;
+
+	case DOSICON_STATUS_ECC_7TO8_BITFLIPS:
+		return 8;
+
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
 static const struct spinand_info dosilicon_spinand_table[] = {
 	SPINAND_INFO("DS35Q1GA",
 		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x71),
@@ -67,7 +130,16 @@ static const struct spinand_info dosilicon_spinand_table[] = {
 					 &write_cache_variants,
 					 &update_cache_variants),
 		SPINAND_HAS_QE_BIT,
-		SPINAND_ECCINFO(&ds35xx_ooblayout, NULL)),
+		SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
+	SPINAND_INFO("DS35Q2GA",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x72),
+		NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
+		NAND_ECCREQ(4, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
 	SPINAND_INFO("DS35M1GA",
 		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x21),
 		NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
@@ -76,7 +148,124 @@ static const struct spinand_info dosilicon_spinand_table[] = {
 					 &write_cache_variants,
 					 &update_cache_variants),
 		SPINAND_HAS_QE_BIT,
-		SPINAND_ECCINFO(&ds35xx_ooblayout, NULL)),
+		SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
+	SPINAND_INFO("DS35M2GA",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x22),
+		NAND_MEMORG(1, 2048, 64, 64, 2048, 40, 2, 1, 1),
+		NAND_ECCREQ(4, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxga_ooblayout, NULL)),
+	SPINAND_INFO("DS35Q2GB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF2),
+		NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35M1GB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA1),
+		NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q1GB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF1),
+		NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q4GM",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF4),
+		NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 2, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q12B",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xF5),
+		NAND_MEMORG(1, 2048, 128, 64, 512, 10, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35M12B",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xA5),
+		NAND_MEMORG(1, 2048, 128, 64, 512, 10, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q1GD-IB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x51),
+		NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					&write_cache_variants,
+					&update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35M4GB-IB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x64),
+		NAND_MEMORG(1, 2048, 128, 64, 4096, 40, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q4GB-IB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xB4),
+		NAND_MEMORG(1, 2048, 128, 64, 4096, 40, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q12C-IB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x75),
+		NAND_MEMORG(1, 2048, 128, 64, 512, 10, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35M12C-IB",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25),
+		NAND_MEMORG(1, 2048, 128, 64, 512, 10, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
+	SPINAND_INFO("DS35Q2GBS",
+		SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xB2),
+		NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
+		NAND_ECCREQ(8, 512),
+		SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					 &write_cache_variants,
+					 &update_cache_variants),
+		SPINAND_HAS_QE_BIT,
+		SPINAND_ECCINFO(&ds35xxgb_ooblayout, ds35xxgb_ecc_get_status)),
 };
 
 static const struct spinand_manufacturer_ops dosilicon_spinand_manuf_ops = {

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