mtd: spinand: winbond: add support for W25N04KV

Add support for W25N04KV.

W25N04KV has 8-bit on-die ECC.

Signed-off-by: Zhi-Jun You <hujy652@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240107144120.532-1-hujy652@gmail.com

diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c
index 1a473021cca5110ac045d98963b58ddf5f940f90..ba7c813b9542bc9f7551bde9289b8a5b4a59fb47 100644 (file)
--- a/drivers/mtd/nand/spi/winbond.c
+++ b/drivers/mtd/nand/spi/winbond.c
@@ -15,6 +15,8 @@
 
 #define WINBOND_CFG_BUF_READ           BIT(3)
 
+#define W25N04KV_STATUS_ECC_5_8_BITFLIPS       (3 << 4)
+
 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),
@@ -118,6 +120,7 @@ static int w25n02kv_ecc_get_status(struct spinand_device *spinand,
                return -EBADMSG;
 
        case STATUS_ECC_HAS_BITFLIPS:
+       case W25N04KV_STATUS_ECC_5_8_BITFLIPS:
                /*
                 * Let's try to retrieve the real maximum number of bitflips
                 * in order to avoid forcing the wear-leveling layer to move
@@ -214,6 +217,15 @@ static const struct spinand_info winbond_spinand_table[] = {
                                              &update_cache_variants),
                     0,
                     SPINAND_ECCINFO(&w25m02gv_ooblayout, w25n02kv_ecc_get_status)),
+       SPINAND_INFO("W25N04KV",
+                    SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xaa, 0x23),
+                    NAND_MEMORG(1, 2048, 128, 64, 4096, 40, 2, 1, 1),
+                    NAND_ECCREQ(8, 512),
+                    SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+                                             &write_cache_variants,
+                                             &update_cache_variants),
+                    0,
+                    SPINAND_ECCINFO(&w25n02kv_ooblayout, w25n02kv_ecc_get_status)),
 };
 
 static int winbond_spinand_init(struct spinand_device *spinand)