From cbf0c01fd69f3b8afd790b0695eb925c3bd2f07c Mon Sep 17 00:00:00 2001
From: David Harris <David_Harris@hmc.edu>
Date: Thu, 19 Oct 2023 13:46:30 -0700
Subject: [PATCH] Set drive for Sky130

---
 synthDC/scripts/synth.tcl | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/synthDC/scripts/synth.tcl b/synthDC/scripts/synth.tcl
index 542cb8fc1..bdd868dd1 100755
--- a/synthDC/scripts/synth.tcl
+++ b/synthDC/scripts/synth.tcl
@@ -148,18 +148,22 @@ set all_in_ex_clk [remove_from_collection [all_inputs] [get_ports $my_clk]]
 
 # Setting constraints on input ports 
 if {$tech == "sky130"} {
-    set_driving_cell  -lib_cell sky130_osu_sc_12T_ms__dff_1 -pin Q $all_in_ex_clk
+    if {$drive == "INV"} {
+	    set_driving_cell -lib_cell inv -pin Y $all_in_ex_clk
+    } elseif {$drive == "FLOP"} {
+	    set_driving_cell  -lib_cell sky130_osu_sc_12T_ms__dff_1 -pin Q $all_in_ex_clk
+    }
 } elseif {$tech == "sky90"} {
     if {$drive == "INV"} {
-	set_driving_cell -lib_cell scc9gena_inv_1 -pin Y $all_in_ex_clk
+	    set_driving_cell -lib_cell scc9gena_inv_1 -pin Y $all_in_ex_clk
     } elseif {$drive == "FLOP"} {
-	set_driving_cell  -lib_cell scc9gena_dfxbp_1 -pin Q $all_in_ex_clk
+	    set_driving_cell  -lib_cell scc9gena_dfxbp_1 -pin Q $all_in_ex_clk
     }
 } elseif {$tech == "tsmc28" || $tech=="tsmc28psyn"} {
     if {$drive == "INV"} {
-	set_driving_cell -lib_cell INVD1BWP30P140 -pin ZN $all_in_ex_clk
+	    set_driving_cell -lib_cell INVD1BWP30P140 -pin ZN $all_in_ex_clk
     } elseif {$drive == "FLOP"} {
-    set_driving_cell -lib_cell DFQD1BWP30P140 -pin Q $all_in_ex_clk
+        set_driving_cell -lib_cell DFQD1BWP30P140 -pin Q $all_in_ex_clk
     }
 }
 
@@ -174,16 +178,20 @@ if {$drive == "FLOP"} {
 
 # Setting load constraint on output ports 
 if {$tech == "sky130"} {
-    set_load [expr [load_of sky130_osu_sc_12T_ms_TT_1P8_25C.ccs/sky130_osu_sc_12T_ms__dff_1/D] * 1] [all_outputs]
-} elseif {$tech == "sky90"} {
     if {$drive == "INV"} {
-	set_load [expr [load_of scc9gena_tt_1.2v_25C/scc9gena_inv_4/A] * 1] [all_outputs]
+	    set_load [expr [load_of sky130_osu_sc_12T_ms_TT_1P8_25C.ccs/sky130_osu_sc_12T_ms__inv_4/A] * 1] [all_outputs]
+    } elseif {$drive == "FLOP"} {
+        set_load [expr [load_of sky130_osu_sc_12T_ms_TT_1P8_25C.ccs/sky130_osu_sc_12T_ms__dff_1/D] * 1] [all_outputs]
+    }
+ } elseif {$tech == "sky90"} {
+    if {$drive == "INV"} {
+	    set_load [expr [load_of scc9gena_tt_1.2v_25C/scc9gena_inv_4/A] * 1] [all_outputs]
     } elseif {$drive == "FLOP"} {
         set_load [expr [load_of scc9gena_tt_1.2v_25C/scc9gena_dfxbp_1/D] * 1] [all_outputs]
     }
 } elseif {$tech == "tsmc28" || $tech == "tsmc28psyn"} {
     if {$drive == "INV"} {
-	set_load [expr [load_of tcbn28hpcplusbwp30p140tt0p9v25c/INVD4BWP30P140/I] * 1] [all_outputs]
+	    set_load [expr [load_of tcbn28hpcplusbwp30p140tt0p9v25c/INVD4BWP30P140/I] * 1] [all_outputs]
     } elseif {$drive == "FLOP"} {
         set_load [expr [load_of tcbn28hpcplusbwp30p140tt0p9v25c/DFQD1BWP30P140/D] * 1] [all_outputs]
     }