~ increase height for more spread decap insertion
+ add or cells to cell exclude
~ adjust pdn to have an offset half to pitch
~ change placement density in accordance to area
~ change padding to allow for space for decap insertion
+ add custom interactive script to insert a buffer on user_clk output
and have a large buffer on core_clk
~ change pdn config to match top level
~ change sdc
~ change openlane configuration