Avoid off-grid errors in FP_PDN_AUTO_ADJUST (The-OpenROAD-Project#1044)

efabless · Apr 13, 2022 · 67bbd24 · 67bbd24
1 parent fc96d12
commit 67bbd24
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Showing 2 changed files with 5 additions and 5 deletions.
diff --git a/scripts/openroad/pdn_cfg.tcl b/scripts/openroad/pdn_cfg.tcl
@@ -24,7 +24,7 @@ if { [info exists ::env(FP_PDN_ENABLE_GLOBAL_CONNECTIONS)] } {
 
 set_voltage_domain -name CORE -power $::env(VDD_NET) -ground $::env(GND_NET)
 
-# Assesses whether the deisgn is the core of the chip or not based on the 
+# Assesses whether the design is the core of the chip or not based on the 
 # value of $::env(DESIGN_IS_CORE) and uses the appropriate stdcell section
 if { $::env(DESIGN_IS_CORE) == 1 } {
     # Used if the design is the core of the chip

diff --git a/scripts/tcl_commands/floorplan.tcl b/scripts/tcl_commands/floorplan.tcl
@@ -69,11 +69,11 @@ proc init_floorplan {args} {
 			$core_height <= [expr {$::env(FP_PDN_HOFFSET) + $::env(FP_PDN_HPITCH)}]} {
 				puts_warn "Current core area is too small for a power grid. The power grid will be minimized."
 
-			set ::env(FP_PDN_VOFFSET) [expr {$core_width/6.0}]
-			set ::env(FP_PDN_HOFFSET) [expr {$core_height/6.0}]
+			set ::env(FP_PDN_VOFFSET) [expr {$core_width/8.0}]
+			set ::env(FP_PDN_HOFFSET) [expr {$core_height/8.0}]
 
-			set ::env(FP_PDN_VPITCH) [expr {$core_width/3.0}]
-			set ::env(FP_PDN_HPITCH) [expr {$core_height/3.0}]
+			set ::env(FP_PDN_VPITCH) [expr {$core_width/4.0}]
+			set ::env(FP_PDN_HPITCH) [expr {$core_height/4.0}]
 		}
 
 	}