Configuring LMK04828 using ps spi

Hello, Im working with RFSoC 4x2 Kit (PYNQ eval board). I have enabled ps spi to send the data to lmk using tcl.

I am just trying to read the device ID of lmk using tcl, but there is no data in RXFIFO.
I would be grateful if you could help me with this or guide me to some resources.

Regards
Ankit