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If you are using the module, not SOC, use the BCM20736S SIP module datasheet and the HW Interfaces Manual:
Within the Hardware Interfaces Guide, the valid pin combinations you want to use in Table 1 are the pins noted in black horizontally within the table.
For example, valid combinations include:
SCLK MOSI MISO
P24 P00 P25
P24 P02 P25
P24 P04 P25
P24 P27 P25
Pins noted in red are for packages other than the 44 pin package used by the module. Ignore those as they are not valid.
You will also want to refer to the working example apps within the SDK called spi_comm_master and spi_comm_slave as these are helpful as well.