WP7502 and SPI config

I used WP7502.
I need config SPI in this chip to slav.
is it even possible?
And how to do it?

From product technical specification, only master mode is supported.

you could give a link to the documentation?

You can search in source.sierrawireless.com
Here I also attach the document.AirPrime_WP75XX-WP8548_Product_Technical_Specification_Rev_10.pdf (1.5 MB)