I went through the datasheet of N25q128. It says that either of below 2 Motorola SPI modes can support its operating.
It doesn't require to specify clock polarity separately for MISO and MOSI.
And Micron should provide Low Level Drivers for their Nor. The LLD could be migrated easily onto different platform.
Thank you for the reply! Somehow I overlooked that section in the datasheet ("Serial Peripheral Interface Modes"). Let me try putting some hardware together to test it and I will get back with the results.
I was able to read chip ID from a MT25QL128 part, so I would consider the able mentioned solution as a valid one. Thanks again Ryan.