gf180/uart-blocks: correct PDN

In the subblock only provide pdn up to m4 so top level connections can
happen on m5

Signed-off-by: Matt Liberty <[email protected]>

Author: maliberty

flow/designs/gf180/uart-blocks/uart_rx/config.mk

@@ -11,7 +11,7 @@ export CORE_ASPECT_RATIO      = 1
 export CORE_MARGIN            = 2
 export PLACE_DENSITY          = 0.60
 
-export PDN_TCL = $(DESIGN_HOME)/$(PLATFORM)/uart-blocks/BLOCKS_grid_strategy.tcl
+export PDN_TCL = $(DESIGN_HOME)/$(PLATFORM)/uart-blocks/uart_rx/pdn.tcl
 
 export PLACE_PINS_ARGS    = -exclude bottom:* -exclude top:* -exclude right:*
 

flow/designs/gf180/uart-blocks/uart_rx/pdn.tcl

@@ -0,0 +1,24 @@
+####################################
+# global connections
+####################################
+add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDD$} -power
+add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDDPE$}
+add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDDCE$}
+add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDDP$}
+add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VDDC$}
+add_global_connection -net {VDD} -inst_pattern {.*} -pin_pattern {^VNW$}
+add_global_connection -net {VSS} -inst_pattern {.*} -pin_pattern {^VSS$} -ground
+add_global_connection -net {VSS} -inst_pattern {.*} -pin_pattern {^VSSE$}
+add_global_connection -net {VSS} -inst_pattern {.*} -pin_pattern {^VSSC$}
+add_global_connection -net {VSS} -inst_pattern {.*} -pin_pattern {^VPW$}
+####################################
+# voltage domains
+####################################
+set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
+####################################
+# standard cell grid
+####################################
+define_pdn_grid -name {block} -voltage_domains {CORE} 
+add_pdn_stripe -grid {block} -layer {Metal1} -width {0.900} -pitch {5.040} -offset {0} -followpins
+add_pdn_stripe -grid {block} -layer {Metal4} -width {4.480} -spacing {0.56} -pitch {44.8} -offset {22.4}
+add_pdn_connect -grid {block} -layers {Metal1 Metal4}