Merge pull request #1480 from eder-matheus/aes_sky130hd_density

update placement density and min dist between io pins for sky130hd/aes

Author: maliberty

flow/designs/sky130hd/aes/config.mk

@@ -5,9 +5,11 @@ export PLATFORM    = sky130hd
 export VERILOG_FILES = $(sort $(wildcard ./designs/src/$(DESIGN_NICKNAME)/*.v))
 export SDC_FILE      = ./designs/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.sdc
 
-export CORE_UTILIZATION = 20 
+export PLACE_PINS_ARGS = -min_distance 4 -min_distance_in_tracks
+
+export CORE_UTILIZATION = 20
 export CORE_ASPECT_RATIO = 1
 export CORE_MARGIN = 2
 
-export PLACE_DENSITY = 0.65
+export PLACE_DENSITY = 0.6
 export TNS_END_PERCENT = 100