[PATCH v4 3/4] mtd: spi-nor-core: set 4byte opcode when possible

[JaimeLiao]

Following linux kernel to check address width and 4byte flag to enable
4byte opcode setting.

Signed-off-by: JaimeLiao <jaimeliao.tw at gmail.com>
---
 drivers/mtd/spi/spi-nor-core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c
index 87a7de7d60..7d6671ade2 100644
--- a/drivers/mtd/spi/spi-nor-core.c
+++ b/drivers/mtd/spi/spi-nor-core.c
@@ -3902,6 +3902,10 @@ int spi_nor_scan(struct spi_nor *nor)
 		return -EINVAL;
 	}
 
+	/* Set 4byte opcodes when possible. */
+	if (nor->addr_width == 4 && info->flags & SPI_NOR_4B_OPCODES)
+		spi_nor_set_4byte_opcodes(nor, info);
+
 	/* Send all the required SPI flash commands to initialize device */
 	ret = spi_nor_init(nor);
 	if (ret)
-- 
2.17.1