Hi abdullahcoc2020,
Could you get a scope to check if it is stable 1.6V or there’s the square waveform at this moment?
If you get the square waveform, you may need to apply the following patch:
40hdr - SPI1 gpio padctl register bit[10] effect by gpiod tools in JP6 - #20 by KevinFFF
Have you verified SPI loopback test working before connecting to IMU?
It could help you confirming if the SPI configurations are correct.