[PATCH 0/6] Add new series Micron SPI NAND devices

[PATCH 0/6] Add new series Micron SPI NAND devices

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

This patchset is for the new series of Micron SPI NAND devices, and the
following links are their datasheet.

These devices are already supported in Linux Kernel.

M78A:
[1] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m78a_1gb_3v_nand_spi.pdf
[2] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m78a_1gb_1_8v_nand_spi.pdf

M79A:
[3] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m79a_2gb_1_8v_nand_spi.pdf
[4] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m79a_ddp_4gb_3v_nand_spi.pdf

M70A:
[5] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_4gb_3v_nand_spi.pdf
[6] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_4gb_1_8v_nand_spi.pdf
[7] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_ddp_8gb_3v_nand_spi.pdf
[8] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_ddp_8gb_1_8v_nand_spi.pdf


Shivamurthy Shastri (6):
  mtd: spinand: micron: Generalize the OOB layout structure and function
    names
  mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGD
  mtd: spinand: micron: Add new Micron SPI NAND devices
  mtd: spinand: micron: identify SPI NAND device with Continuous Read
    mode
  mtd: spinand: micron: Add M70A series Micron SPI NAND devices
  mtd: spinand: micron: Add new Micron SPI NAND devices with multiple
    dies

 drivers/mtd/nand/spi/micron.c | 150 ++++++++++++++++++++++++++++++----
 include/linux/mtd/spinand.h   |   1 +
 2 files changed, 137 insertions(+), 14 deletions(-)

-- 
2.17.1

[PATCH 1/6] mtd: spinand: micron: Generalize the OOB layout structure and function names

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

In order to add new Micron SPI NAND devices, we generalized the OOB
layout structure and function names.

Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
---
 drivers/mtd/nand/spi/micron.c | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index 04de51cb4667..c37b152ba29e 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -38,38 +38,38 @@ static SPINAND_OP_VARIANTS(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,
-	.rfree = mt29f2g01abagd_ooblayout_free,
+static const struct mtd_ooblayout_ops micron_8_ooblayout = {
+	.ecc = micron_8_ooblayout_ecc,
+	.rfree = 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:
@@ -102,8 +102,8 @@ static const struct spinand_info micron_spinand_table[] = {
 					      &write_cache_variants,
 					      &update_cache_variants),
 		     0,
-		     SPINAND_ECCINFO(&mt29f2g01abagd_ooblayout,
-				     mt29f2g01abagd_ecc_get_status)),
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status)),
 };
 
 static int micron_spinand_detect(struct spinand_device *spinand)
-- 
2.17.1

[PATCH 2/6] mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGD

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

Add the SPI NAND device MT29F2G01ABAGD series number, size and voltage
details as a comment.

Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
---
 drivers/mtd/nand/spi/micron.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index c37b152ba29e..93b0e2c07e79 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -95,6 +95,7 @@ static int micron_8_ecc_get_status(struct spinand_device *spinand,
 }
 
 static const struct spinand_info micron_spinand_table[] = {
+	/* M79A 2Gb 3.3V */
 	SPINAND_INFO("MT29F2G01ABAGD", 0x24,
 		     NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 1),
 		     NAND_ECCREQ(8, 512),
-- 
2.17.1

[PATCH 3/6] mtd: spinand: micron: Add new Micron SPI NAND devices

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

Add device table for M79A and M78A series Micron SPI NAND devices.

Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
---
 drivers/mtd/nand/spi/micron.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index 93b0e2c07e79..c58082c16c3c 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -105,6 +105,36 @@ static const struct spinand_info micron_spinand_table[] = {
 		     0,
 		     SPINAND_ECCINFO(&micron_8_ooblayout,
 				     micron_8_ecc_get_status)),
+	/* M79A 2Gb 1.8V */
+	SPINAND_INFO("MT29F2G01ABBGD", 0x25,
+		     NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status)),
+	/* M78A 1Gb 3.3V */
+	SPINAND_INFO("MT29F1G01ABAFD", 0x14,
+		     NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status)),
+	/* M78A 1Gb 1.8V */
+	SPINAND_INFO("MT29F1G01ABAFD", 0x15,
+		     NAND_MEMORG(1, 2048, 128, 64, 1024, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status)),
 };
 
 static int micron_spinand_detect(struct spinand_device *spinand)
-- 
2.17.1

[PATCH 4/6] mtd: spinand: micron: identify SPI NAND device with Continuous Read mode

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

Add SPINAND_HAS_CR_FEAT_BIT flag to identify the SPI NAND device with
the Continuous Read mode.

Some of the Micron SPI NAND devices have the "Continuous Read" feature
enabled by default, which does not fit the subsystem needs.

In this mode, the READ CACHE command doesn't require the starting column
address. The device always output the data starting from the first
column of the cache register, and once the end of the cache register
reached, the data output continues through the next page. With the
continuous read mode, it is possible to read out the entire block using
a single READ command, and once the end of the block reached, the output
pins become High-Z state. However, during this mode the read command
doesn't output the OOB area.

Hence, we disable the feature at probe time.

Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
---
 drivers/mtd/nand/spi/micron.c | 16 ++++++++++++++++
 include/linux/mtd/spinand.h   |  1 +
 2 files changed, 17 insertions(+)

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index c58082c16c3c..508088b8b483 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -22,6 +22,8 @@
 #define MICRON_STATUS_ECC_4TO6_BITFLIPS	(3 << 4)
 #define MICRON_STATUS_ECC_7TO8_BITFLIPS	(5 << 4)
 
+#define MICRON_CFG_CR			BIT(0)
+
 static SPINAND_OP_VARIANTS(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),
@@ -157,8 +159,22 @@ static int micron_spinand_detect(struct spinand_device *spinand)
 	return 1;
 }
 
+static int micron_spinand_init(struct spinand_device *spinand)
+{
+	/*
+	 * M70A device series enable Continuous Read feature@Power-up,
+	 * which is not supported. Disable this bit to avoid any possible
+	 * failure.
+	 */
+	if (spinand->flags & SPINAND_HAS_CR_FEAT_BIT)
+		return spinand_upd_cfg(spinand, MICRON_CFG_CR, 0);
+
+	return 0;
+}
+
 static const struct spinand_manufacturer_ops micron_spinand_manuf_ops = {
 	.detect = micron_spinand_detect,
+	.init = micron_spinand_init,
 };
 
 const struct spinand_manufacturer micron_spinand_manufacturer = {
diff --git a/include/linux/mtd/spinand.h b/include/linux/mtd/spinand.h
index 83eafb184e65..88bacde91e53 100644
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -246,6 +246,7 @@ 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
-- 
2.17.1

[PATCH 5/6] mtd: spinand: micron: Add M70A series Micron SPI NAND devices

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

Add device table for M70A series Micron SPI NAND devices.

Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
---
 drivers/mtd/nand/spi/micron.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index 508088b8b483..fe91349999c6 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -137,6 +137,26 @@ static const struct spinand_info micron_spinand_table[] = {
 		     0,
 		     SPINAND_ECCINFO(&micron_8_ooblayout,
 				     micron_8_ecc_get_status)),
+	/* M70A 4Gb 3.3V */
+	SPINAND_INFO("MT29F4G01ABAFD", 0x34,
+		     NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_CR_FEAT_BIT,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status)),
+	/* M70A 4Gb 1.8V */
+	SPINAND_INFO("MT29F4G01ABBFD", 0x35,
+		     NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &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)
-- 
2.17.1

[PATCH 6/6] mtd: spinand: micron: Add new Micron SPI NAND devices with multiple dies

[shiva.linuxworks at gmail.com]

From: Shivamurthy Shastri <sshivamurthy@micron.com>

Add device table for new Micron SPI NAND devices, which have multiple
dies.

Also, enable support to select the dies.

Signed-off-by: Shivamurthy Shastri <sshivamurthy@micron.com>
---
 drivers/mtd/nand/spi/micron.c | 55 +++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index fe91349999c6..6bacf14aafea 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -24,6 +24,14 @@
 
 #define MICRON_CFG_CR			BIT(0)
 
+/*
+ * As per datasheet, die selection is done by the 6th bit of Die
+ * Select Register (Address 0xD0).
+ */
+#define MICRON_DIE_SELECT_REG	0xD0
+
+#define MICRON_SELECT_DIE(x)	((x) << 6)
+
 static SPINAND_OP_VARIANTS(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),
@@ -70,6 +78,20 @@ static const struct mtd_ooblayout_ops micron_8_ooblayout = {
 	.rfree = micron_8_ooblayout_free,
 };
 
+static int micron_select_target(struct spinand_device *spinand,
+				unsigned int target)
+{
+	struct spi_mem_op op = SPINAND_SET_FEATURE_OP(MICRON_DIE_SELECT_REG,
+						      spinand->scratchbuf);
+
+	if (target > 1)
+		return -EINVAL;
+
+	*spinand->scratchbuf = MICRON_SELECT_DIE(target);
+
+	return spi_mem_exec_op(spinand->slave, &op);
+}
+
 static int micron_8_ecc_get_status(struct spinand_device *spinand,
 				   u8 status)
 {
@@ -137,6 +159,17 @@ static const struct spinand_info micron_spinand_table[] = {
 		     0,
 		     SPINAND_ECCINFO(&micron_8_ooblayout,
 				     micron_8_ecc_get_status)),
+	/* M79A 4Gb 3.3V */
+	SPINAND_INFO("MT29F4G01ADAGD", 0x36,
+		     NAND_MEMORG(1, 2048, 128, 64, 2048, 2, 1, 2),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     0,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status),
+		     SPINAND_SELECT_TARGET(micron_select_target)),
 	/* M70A 4Gb 3.3V */
 	SPINAND_INFO("MT29F4G01ABAFD", 0x34,
 		     NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 1),
@@ -157,6 +190,28 @@ static const struct spinand_info micron_spinand_table[] = {
 		     SPINAND_HAS_CR_FEAT_BIT,
 		     SPINAND_ECCINFO(&micron_8_ooblayout,
 				     micron_8_ecc_get_status)),
+	/* M70A 8Gb 3.3V */
+	SPINAND_INFO("MT29F8G01ADAFD", 0x46,
+		     NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 2),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_CR_FEAT_BIT,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status),
+		     SPINAND_SELECT_TARGET(micron_select_target)),
+	/* M70A 8Gb 1.8V */
+	SPINAND_INFO("MT29F8G01ADBFD", 0x47,
+		     NAND_MEMORG(1, 4096, 256, 64, 2048, 1, 1, 2),
+		     NAND_ECCREQ(8, 512),
+		     SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+					      &write_cache_variants,
+					      &update_cache_variants),
+		     SPINAND_HAS_CR_FEAT_BIT,
+		     SPINAND_ECCINFO(&micron_8_ooblayout,
+				     micron_8_ecc_get_status),
+		     SPINAND_SELECT_TARGET(micron_select_target)),
 };
 
 static int micron_spinand_detect(struct spinand_device *spinand)
-- 
2.17.1

[PATCH 0/6] Add new series Micron SPI NAND devices

[Jagan Teki]

+ Vignesh

On Wed, Jul 8, 2020 at 1:37 AM <shiva.linuxworks@gmail.com> wrote:
>
> From: Shivamurthy Shastri <sshivamurthy@micron.com>
>
> This patchset is for the new series of Micron SPI NAND devices, and the
> following links are their datasheet.
>
> These devices are already supported in Linux Kernel.
>
> M78A:
> [1] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m78a_1gb_3v_nand_spi.pdf
> [2] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m78a_1gb_1_8v_nand_spi.pdf
>
> M79A:
> [3] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m79a_2gb_1_8v_nand_spi.pdf
> [4] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m79a_ddp_4gb_3v_nand_spi.pdf
>
> M70A:
> [5] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_4gb_3v_nand_spi.pdf
> [6] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_4gb_1_8v_nand_spi.pdf
> [7] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_ddp_8gb_3v_nand_spi.pdf
> [8] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_ddp_8gb_1_8v_nand_spi.pdf
>
>
> Shivamurthy Shastri (6):
>   mtd: spinand: micron: Generalize the OOB layout structure and function
>     names
>   mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGD
>   mtd: spinand: micron: Add new Micron SPI NAND devices
>   mtd: spinand: micron: identify SPI NAND device with Continuous Read
>     mode
>   mtd: spinand: micron: Add M70A series Micron SPI NAND devices
>   mtd: spinand: micron: Add new Micron SPI NAND devices with multiple
>     dies

Acked-by: Jagan Teki <jagan@amarulasolutions.com>

[PATCH 0/6] Add new series Micron SPI NAND devices

[Jagan Teki]

On Wed, Jul 8, 2020 at 1:37 AM <shiva.linuxworks@gmail.com> wrote:
>
> From: Shivamurthy Shastri <sshivamurthy@micron.com>
>
> This patchset is for the new series of Micron SPI NAND devices, and the
> following links are their datasheet.
>
> These devices are already supported in Linux Kernel.
>
> M78A:
> [1] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m78a_1gb_3v_nand_spi.pdf
> [2] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m78a_1gb_1_8v_nand_spi.pdf
>
> M79A:
> [3] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m79a_2gb_1_8v_nand_spi.pdf
> [4] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m79a_ddp_4gb_3v_nand_spi.pdf
>
> M70A:
> [5] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_4gb_3v_nand_spi.pdf
> [6] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_4gb_1_8v_nand_spi.pdf
> [7] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_ddp_8gb_3v_nand_spi.pdf
> [8] https://www.micron.com/~/media/documents/products/data-sheet/nand-flash/70-series/m70a_ddp_8gb_1_8v_nand_spi.pdf
>
>
> Shivamurthy Shastri (6):
>   mtd: spinand: micron: Generalize the OOB layout structure and function
>     names
>   mtd: spinand: micron: Describe the SPI NAND device MT29F2G01ABAGD
>   mtd: spinand: micron: Add new Micron SPI NAND devices
>   mtd: spinand: micron: identify SPI NAND device with Continuous Read
>     mode
>   mtd: spinand: micron: Add M70A series Micron SPI NAND devices
>   mtd: spinand: micron: Add new Micron SPI NAND devices with multiple
>     dies

Applied to u-boot-spi/master