Accessing CM_SLEEPDEP_PER register

Hi,

We are using DM3730 Processor.

As part of power management implementation we are trying to clear the Sleep Dependency in CM_SLEEPDEP_PER register by clearing it.

Before writing CM_SLEEPDEP_PER register with a value of 0, if we print the value it shows 0x2.

While writing 0x0 to the CM_SLEEPDEP_PER register the processor hangs and never passes executing that instruction seems to be.

Please let us know what clocks shall be active while writing to this register?

Thank you for reading the post and your time.

Regards,

GSR