diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 6f5395c7b9b..d39d0ee7813 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -3081,6 +3081,7 @@ static int spi_nor_init_params(struct spi_nor *nor,
 	memset(params, 0, sizeof(*params));
 
 	/* Set SPI NOR sizes. */
+	params->writesize = 1;
 	params->size = info->sector_size * info->n_sectors;
 	params->page_size = info->page_size;
 
@@ -4499,7 +4500,7 @@ int spi_nor_scan(struct spi_nor *nor)
 	mtd->dev = nor->dev;
 	mtd->priv = nor;
 	mtd->type = MTD_NORFLASH;
-	mtd->writesize = 1;
+	mtd->writesize = params.writesize;
 	mtd->flags = MTD_CAP_NORFLASH;
 	mtd->size = params.size;
 	mtd->_erase = spi_nor_erase;
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 047e83e8463..1ae586b2e5f 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h
@@ -457,6 +457,7 @@ enum spi_nor_pp_command_index {
 
 struct spi_nor_flash_parameter {
 	u64				size;
+	u32				writesize;
 	u32				page_size;
 	u8				rdsr_dummy;
 	u8				rdsr_addr_nbytes;