mtd: spinand: micron: Add new Micron SPI NAND devices with multiple dies

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

diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index fe91349..6bacf14 100644 (file)
--- 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)