diff --git a/target/linux/mediatek/patches-5.4/0671-add-micron-MT29F4G01ABAFD-spi-nand-support.c b/target/linux/mediatek/patches-5.4/0671-add-micron-MT29F4G01ABAFD-spi-nand-support.c
deleted file mode 100644
index 40833c0..0000000
--- a/target/linux/mediatek/patches-5.4/0671-add-micron-MT29F4G01ABAFD-spi-nand-support.c
+++ /dev/null
@@ -1,111 +0,0 @@
---- a/drivers/mtd/nand/spi/micron.c
-+++ b/drivers/mtd/nand/spi/micron.c
-@@ -18,7 +18,9 @@
- #define MICRON_STATUS_ECC_4TO6_BITFLIPS	(3 << 4)
- #define MICRON_STATUS_ECC_7TO8_BITFLIPS	(5 << 4)
- 
--static SPINAND_OP_VARIANTS(read_cache_variants,
-+#define MICRON_CFG_CR			BIT(0)
-+
-+static SPINAND_OP_VARIANTS(quadio_read_cache_variants,
- 		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
- 		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
- 		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
-@@ -26,46 +28,46 @@ static SPINAND_OP_VARIANTS(read_cache_va
- 		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,
-+static SPINAND_OP_VARIANTS(x4_write_cache_variants,
- 		SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
- 		SPINAND_PROG_LOAD(true, 0, NULL, 0));
- 
--static SPINAND_OP_VARIANTS(update_cache_variants,
-+static SPINAND_OP_VARIANTS(x4_update_cache_variants,
- 		SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
- 		SPINAND_PROG_LOAD(false, 0, NULL, 0));
- 
--static int mt29f2g01abagd_ooblayout_ecc(struct mtd_info *mtd, int section,
--					struct mtd_oob_region *region)
-+static int micron_8_ooblayout_ecc(struct mtd_info *mtd, int section,
-+				  struct mtd_oob_region *region)
- {
- 	if (section)
- 		return -ERANGE;
- 
--	region->offset = 64;
--	region->length = 64;
-+	region->offset = mtd->oobsize / 2;
-+	region->length = mtd->oobsize / 2;
- 
- 	return 0;
- }
- 
--static int mt29f2g01abagd_ooblayout_free(struct mtd_info *mtd, int section,
--					 struct mtd_oob_region *region)
-+static int micron_8_ooblayout_free(struct mtd_info *mtd, int section,
-+				   struct mtd_oob_region *region)
- {
- 	if (section)
- 		return -ERANGE;
- 
- 	/* Reserve 2 bytes for the BBM. */
- 	region->offset = 2;
--	region->length = 62;
-+	region->length = (mtd->oobsize / 2) - 2;
- 
- 	return 0;
- }
- 
--static const struct mtd_ooblayout_ops mt29f2g01abagd_ooblayout = {
--	.ecc = mt29f2g01abagd_ooblayout_ecc,
--	.free = mt29f2g01abagd_ooblayout_free,
-+static const struct mtd_ooblayout_ops micron_8_ooblayout = {
-+	.ecc = micron_8_ooblayout_ecc,
-+	.free = micron_8_ooblayout_free,
- };
- 
--static int mt29f2g01abagd_ecc_get_status(struct spinand_device *spinand,
--					 u8 status)
-+static int micron_8_ecc_get_status(struct spinand_device *spinand,
-+				   u8 status)
- {
- 	switch (status & MICRON_STATUS_ECC_MASK) {
- 	case STATUS_ECC_NO_BITFLIPS:
-@@ -94,12 +96,21 @@ static const struct spinand_info micron_
- 	SPINAND_INFO("MT29F2G01ABAGD", 0x24,
- 		     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_INFO_OP_VARIANTS(&quadio_read_cache_variants,
-+					      &x4_write_cache_variants,
-+					      &x4_update_cache_variants),
- 		     0,
--		     SPINAND_ECCINFO(&mt29f2g01abagd_ooblayout,
--				     mt29f2g01abagd_ecc_get_status)),
-+		     SPINAND_ECCINFO(&micron_8_ooblayout,
-+				     micron_8_ecc_get_status)),
-+	SPINAND_INFO("MT29F4G01ABAFD", 0x34,
-+		     NAND_MEMORG(1, 4096, 256, 64, 2048, 40, 1, 1, 1),
-+		     NAND_ECCREQ(8, 512),
-+		     SPINAND_INFO_OP_VARIANTS(&quadio_read_cache_variants,
-+					      &x4_write_cache_variants,
-+					      &x4_update_cache_variants),
-+		     SPINAND_HAS_CR_FEAT_BIT,
-+		     SPINAND_ECCINFO(&micron_8_ooblayout,
-+				     micron_8_ecc_get_status)),
- };
- 
- static int micron_spinand_detect(struct spinand_device *spinand)
---- a/include/linux/mtd/spinand.h
-+++ b/include/linux/mtd/spinand.h
-@@ -270,6 +270,7 @@ struct spinand_ecc_info {
- };
- 
- #define SPINAND_HAS_QE_BIT		BIT(0)
-+#define SPINAND_HAS_CR_FEAT_BIT		BIT(1)
- 
- /**
-  * struct spinand_info - Structure used to describe SPI NAND chips
diff --git a/target/linux/mediatek/patches-5.4/0672-add-F50L1G41LB-and-GD5F1GQ5UExxG-snand-support.patch b/target/linux/mediatek/patches-5.4/0672-add-F50L1G41LB-and-GD5F1GQ5UExxG-snand-support.patch
deleted file mode 100644
index 63eee5d..0000000
--- a/target/linux/mediatek/patches-5.4/0672-add-F50L1G41LB-and-GD5F1GQ5UExxG-snand-support.patch
+++ /dev/null
@@ -1,75 +0,0 @@
-Index: linux-5.4.158/drivers/mtd/nand/spi/gigadevice.c
-===================================================================
---- linux-5.4.158.orig/drivers/mtd/nand/spi/gigadevice.c
-+++ linux-5.4.158/drivers/mtd/nand/spi/gigadevice.c
-@@ -36,6 +36,15 @@ static SPINAND_OP_VARIANTS(read_cache_va
- 		SPINAND_PAGE_READ_FROM_CACHE_OP_3A(true, 0, 1, NULL, 0),
- 		SPINAND_PAGE_READ_FROM_CACHE_OP_3A(false, 0, 0, NULL, 0));
- 
-+/* Q5 devices, QUADIO: Dummy bytes only valid for 1 GBit variants */
-+static SPINAND_OP_VARIANTS(gd5f1gq5_read_cache_variants,
-+		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
-+		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
-+		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_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_X4(true, 0, NULL, 0),
- 		SPINAND_PROG_LOAD(true, 0, NULL, 0));
-@@ -223,7 +232,54 @@ static int gd5fxgq4ufxxg_ecc_get_status(
- 	return -EINVAL;
- }
- 
-+static int esmt_1_ooblayout_ecc(struct mtd_info *mtd, int section,
-+				  struct mtd_oob_region *region)
-+{
-+	if (section > 3)
-+		return -ERANGE;
-+
-+	region->offset = (16 * section) + 8;
-+	region->length = 8;
-+
-+	return 0;
-+}
-+
-+static int esmt_1_ooblayout_free(struct mtd_info *mtd, int section,
-+				   struct mtd_oob_region *region)
-+{
-+	if (section > 3)
-+		return -ERANGE;
-+
-+	region->offset = (16 * section) + 2;
-+	region->length = 6;
-+
-+	return 0;
-+}
-+
-+static const struct mtd_ooblayout_ops esmt_1_ooblayout = {
-+	.ecc = esmt_1_ooblayout_ecc,
-+	.free = esmt_1_ooblayout_free,
-+};
-+
- static const struct spinand_info gigadevice_spinand_table[] = {
-+	SPINAND_INFO("F50L1G41LB", 0x01,
-+		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
-+		     NAND_ECCREQ(8, 512),
-+		     SPINAND_INFO_OP_VARIANTS(&gd5f1gq5_read_cache_variants,
-+					      &write_cache_variants,
-+					      &update_cache_variants),
-+		     0,
-+		     SPINAND_ECCINFO(&esmt_1_ooblayout,
-+				     NULL)),
-+	SPINAND_INFO("GD5F1GQ5UExxG", 0x51,
-+		     NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
-+		     NAND_ECCREQ(4, 512),
-+		     SPINAND_INFO_OP_VARIANTS(&gd5f1gq5_read_cache_variants,
-+					      &write_cache_variants,
-+					      &update_cache_variants),
-+		     SPINAND_HAS_QE_BIT,
-+		     SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
-+				     gd5fxgq4xa_ecc_get_status)),
- 	SPINAND_INFO("GD5F1GQ4xA", 0xF1,
- 		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
- 		     NAND_ECCREQ(8, 512),
diff --git a/target/linux/mediatek/patches-5.4/412-mtd-spinand-gigadevice-Add-support-for-F50L1G41LB-and-GD5F1GQ5UExxG.patch b/target/linux/mediatek/patches-5.4/412-mtd-spinand-gigadevice-Add-support-for-F50L1G41LB-and-GD5F1GQ5UExxG.patch
new file mode 100644
index 0000000..32bce58
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/412-mtd-spinand-gigadevice-Add-support-for-F50L1G41LB-and-GD5F1GQ5UExxG.patch
@@ -0,0 +1,44 @@
+--- a/drivers/mtd/nand/spi/gigadevice.c
++++ b/drivers/mtd/nand/spi/gigadevice.c
+@@ -39,6 +39,15 @@ static SPINAND_OP_VARIANTS(read_cache_va
+ 		SPINAND_PAGE_READ_FROM_CACHE_OP_3A(true, 0, 1, NULL, 0),
+ 		SPINAND_PAGE_READ_FROM_CACHE_OP_3A(false, 0, 0, NULL, 0));
+ 
++/* Q5 devices, QUADIO: Dummy bytes only valid for 1 GBit variants */
++static SPINAND_OP_VARIANTS(gd5f1gq5_read_cache_variants,
++		SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, NULL, 0),
++		SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
++		SPINAND_PAGE_READ_FROM_CACHE_DUALIO_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_X4(true, 0, NULL, 0),
+ 		SPINAND_PROG_LOAD(true, 0, NULL, 0));
+@@ -265,6 +274,16 @@ static int gd5fxgq4ufxxg_ecc_get_status(
+ }
+ 
+ static const struct spinand_info gigadevice_spinand_table[] = {
++	SPINAND_INFO("F50L1G41LB",
++	             SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01),
++		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
++		     NAND_ECCREQ(8, 512),
++		     SPINAND_INFO_OP_VARIANTS(&gd5f1gq5_read_cache_variants,
++					      &write_cache_variants,
++					      &update_cache_variants),
++		     0,
++		     SPINAND_ECCINFO(&gd5fxgq4xa_ooblayout,
++				     gd5fxgq4xa_ecc_get_status)),
+ 	SPINAND_INFO("GD5F1GQ4xA",
+ 		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xf1),
+ 		     NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 1, 1, 1),
+@@ -337,7 +356,7 @@ static const struct spinand_info gigadev
+ 		     SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x51),
+ 		     NAND_MEMORG(1, 2048, 128, 64, 1024, 20, 1, 1, 1),
+ 		     NAND_ECCREQ(4, 512),
+-		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
++		     SPINAND_INFO_OP_VARIANTS(&gd5f1gq5_read_cache_variants,
+ 					      &write_cache_variants,
+ 					      &update_cache_variants),
+ 		     SPINAND_HAS_QE_BIT,