[SOLVED] Connecting power net by UPF

Hello All,

I got really frustrated. I just need to synthesize very small design. But unfortunately I have just library with powered gates. I don't need sophisticated power management. I just need to have properly connected power nets. By normal synthesis I got design with floating power nets.
I use example from synopsys help:

create_power_domain PD1 -elements INST_1
create_supply_net A_VDD -domain PD1
create_supply_net A_VSS -domain PD1
set_domain_supply_net PD1 -primary_power_net A_VDD -primary_ground_net A_VSS

Last command says:
Error: Primary supply of power domain 'PD1' cannot be set to a domain-dependent supply net when supply set handles are enabled. (UPF-541)

What is wrong in official synopsys example?

Hi All,

No answer, but solution found anyway...
Following command should be used before any setup of UPF:

set upf_create_implicit_supply_sets false

Also you need to specify operating conditions. These can be found by report_design command.

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Here is complete set of commands which is able to properly connect single power:

set upf_create_implicit_supply_sets false
create_power_domain TOP -include_scope
create_supply_net TOP_VDD1 -domain TOP
create_supply_net VSS -domain TOP
set_domain_supply_net TOP -primary_power_net TOP_VDD1 -primary_ground_net VSS
create_supply_port VSS -domain TOP -direction in
create_supply_port TOP_VDD1 -domain TOP -direction in
add_port_state VSS -state {state1 0.000000}
add_port_state TOP_VDD1 -state {state1 1.080000}
connect_supply_net VSS -ports VSS
connect_supply_net TOP_VDD1 -ports TOP_VDD1
set_voltage 1.08 -object_list { TOP_VDD1 }
set_voltage 0 -object_list { VSS }
set_operating_conditions WCCOM
compile_ultra
write -pg -hierarchy -format verilog -output file_synth.v