tighten clock + TNS100 + update metrics

Signed-off-by: Harsh Vardhan <[email protected]>

Author: openroadie

flow/designs/sky130hd/chameleon/config.mk

@@ -46,5 +46,7 @@ export ADDITIONAL_LEFS  = $(chameleon_DIR)/lef/apb_sys_0.lef \
 
 export MACRO_PLACEMENT = $(chameleon_DIR)/chameleon.macro_placment.cfg
 
-export FP_PDN_RAIL_WIDTH = 0.48
+export FP_PDN_RAIL_WIDTH  = 0.48
 export FP_PDN_RAIL_OFFSET = 0
+export TNS_END_PERCENT   ?= 100
+

flow/designs/sky130hd/chameleon/constraint.sdc

@@ -1,6 +1,6 @@
 set clk_name core_clock 
 set clk_port_name HCLK 
-set clk_period 8.2 
+set clk_period 7.0 
 set clk_io_pct 0.1
 
 set clk_port [get_ports $clk_port_name]