diff mbox series

[U-Boot,5/5] mtd: spi_flash: preserve Spansion's original value during reboot

Message ID fd3c12d6990f65120f0ee29718eafa4b2fcc56c7.1506820067.git.engkhalil86@gmail.com
State Superseded
Delegated to: Jagannadha Sutradharudu Teki
Headers show
Series Clear error flags & initialization of Spansion | expand

Commit Message

Ahmed Samir Khalil Oct. 1, 2017, 1:20 a.m. UTC 
Spansion flash has QEB in the same status register as well.
Therefore, preserve the original values while rebooting.
Otherwise, some SPI controllers may be unable to access
the flash correctly e.g. receive garbage bytes instead.

Signed-off-by: Ahmed S. Khalil <engkhalil86@gmail.com>
---
 drivers/mtd/spi/spi_flash.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index b6b56fe..2e603ed 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -984,7 +984,8 @@  int spi_flash_scan(struct spi_flash *flash)
 	 */
 	if (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_ATMEL ||
 	   (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_SST) ||
-	   (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_MACRONIX)) {
+	   (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_MACRONIX) ||
+	   (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_SPANSION)) {
 		u8 sr = 0;
 
 		if (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_MACRONIX) {