synth: clockgate command demo for sky130hd

Signed-off-by: Emil J. Tywoniak <emil@tywoniak.eu>
The-OpenROAD-Project · Oct 17, 2024 · 20683e7 · 20683e7
1 parent 7b4e7aa
commit 20683e7
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diff --git a/flow/platforms/sky130hd/config.mk b/flow/platforms/sky130hd/config.mk
@@ -77,6 +77,9 @@ export ADDER_MAP_FILE ?= $(PLATFORM_DIR)/cells_adders_hd.v
 # Define ABC driver and load
 export ABC_DRIVER_CELL = sky130_fd_sc_hd__buf_1
 export ABC_LOAD_IN_FF = 5
+
+export CLOCKGATE_CMD = clockgate -pos sky130_fd_sc_hd__dlclkp_4 GATE:CLK:GCLK -min_net_size 8
+
 #--------------------------------------------------------
 # Floorplan
 # -------------------------------------------------------

diff --git a/flow/scripts/synth.tcl b/flow/scripts/synth.tcl
@@ -40,6 +40,8 @@ foreach cell $::env(DONT_USE_CELLS) {
   lappend dfflibmap_args -dont_use $cell
 }
 
+yosys $::env(CLOCKGATE_CMD)
+
 # Technology mapping of flip-flops
 # dfflibmap only supports one liberty file
 if {[env_var_exists_and_non_empty DFF_LIB_FILE]} {