Thank you for contacting Cypress Community.
I would like to inform you that all flash devices are shipped with Quad mode disabled and unfortunately there is no other way of enabling the Quad mode apart from performing a write operation on configuration register. However, I would like to point out that the CR1NV register is a non volatile register and CR1NV bit (QUAD_NV bit) provides the default state for the Quad bit upon power on. Therefore, once the CR1NV bit is programmed to 1, the write operation on Configuration Register is not needed to be performed upon every power on.
Let me know if you have any more queries.