Runtime initialisation of S25FL127

[marekmatej]

zephyr/drivers/flash/spi_nor.c

Line 860 in 3e9dfdd

LOG_ERR("Unable to enter 4-byte mode: %d\n", rc);

Hi guys, I ran into the problem when initializing flash by SFDP runtime check. Apparently the spi_nor_set_address_mode() decide from 'dw.enter_4ba' field of the flash description the 4 byte addressing is not available (0xa8) - which is true and not actually needed on the 16Mb flash - and returns error -134. Because of this the spi_nor flash is disabled and cannot be used.
What is the reason for returning the error if the feature is not actually available and not needed on the device?