When using clocks from another power domain, consider power management software that can turn off a power domain.
Note: In the Vivado CIPS wizard, the auto-select mode restricts some clocks from
being routed across a power domain. For example, the LPD and FPD divider clock
outputs are not routed to the PMC power domain because power management software
might turn off the FPD or both the LPD and FPD.
The power states are described in the Power chapter.