Merge pull request #1160 from The-OpenROAD-Project-staging/microwatt-update

Bump microwatt PLACE_DENSITY 0.2 -> 0.25

Author: maliberty

flow/designs/sky130hd/microwatt/config.mk

@@ -11,7 +11,7 @@ export SDC_FILE      = ./designs/$(PLATFORM)/$(DESIGN_NICKNAME)/constraint.sdc
 export DIE_AREA   = 0 0 2920 3520
 export CORE_AREA  = 10 10 2910 3510
 
-export PLACE_DENSITY ?= 0.20
+export PLACE_DENSITY ?= 0.25
 
 export microwatt_DIR = ./designs/$(PLATFORM)/$(DESIGN_NICKNAME)
 
@@ -31,4 +31,4 @@ export CTS_CLUSTER_SIZE = 30
 
 export export SETUP_SLACK_MARGIN = 0.2
 
-export GLOBAL_ROUTE_ARGS=-congestion_iterations 100 -verbose
+export GLOBAL_ROUTE_ARGS=-congestion_iterations 100 -verbose