On 19/02/21 10:56AM, tkuw584924@gmail.com wrote:
From: Takahiro Kuwano Takahiro.Kuwano@infineon.com
Cypress chips support SPINOR_OP_EN4B(B7h)/SPINOR_OP_EX4B(E9h) to
The datasheet says the EN4B command is indeed B7h but EX4B is listed as B8h. The command E9h is for "Password Unlock". So exiting 4 byte mode will do something completely different.
enable/disable 4-byte addressing mode.
Signed-off-by: Takahiro Kuwano Takahiro.Kuwano@infineon.com
drivers/mtd/spi/spi-nor-core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/mtd/spi/spi-nor-core.c b/drivers/mtd/spi/spi-nor-core.c index 46948ed41b..8d63681cb3 100644 --- a/drivers/mtd/spi/spi-nor-core.c +++ b/drivers/mtd/spi/spi-nor-core.c @@ -492,6 +492,7 @@ static int set_4byte(struct spi_nor *nor, const struct flash_info *info, case SNOR_MFR_ISSI: case SNOR_MFR_MACRONIX: case SNOR_MFR_WINBOND:
- case SNOR_MFR_CYPRESS: if (need_wren) write_enable(nor);
-- 2.25.1