Merge pull request #735 from Pinata-Consulting/sky130-abc-period-cleanup

sky130hs: ABC_CLOCK_PERIOD_IN_PS is extracted automatically

Author: maliberty

flow/designs/sky130hs/coyote_tc/config.mk

@@ -61,7 +61,6 @@ export ADDITIONAL_LEFS = $(IO_DIR)/lef/sky130_ef_io__gpiov2_pad_wrapped.lef \
 export DIE_AREA    = 0.0 0.0 5200 4609.14
 export CORE_AREA   = 210 210 4990 4389.14
 
-export ABC_CLOCK_PERIOD_IN_PS = 10000
 export ABC_DRIVER_CELL = sky130_fd_sc_hs__buf_1
 export ABC_LOAD_IN_FF = 3
 

flow/designs/sky130hs/riscv32i/config.mk

@@ -4,8 +4,6 @@ export PLATFORM    = sky130hs
 
 export VERILOG_FILES = $(sort $(wildcard ./designs/src/$(DESIGN_NICKNAME)/*.v))
 export SDC_FILE      = ./designs/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.sdc
-export ABC_CLOCK_PERIOD_IN_PS = 4000
-
 
 export CORE_UTILIZATION = 45
 export PLACE_DENSITY_LB_ADDON = 0.2