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Add -pins to the various pdn setup to give more realistic IR-drop #3235

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Merged
maliberty merged 9 commits into from
Sep 14, 2025
Merged

Add -pins to the various pdn setup to give more realistic IR-drop #3235

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b3ebf18
Add -pins to the various pdn setup to give more realistic IR-drop
maliberty Jun 13, 2025
2d25eba
Merge branch 'master' into pdn-pins-layer
maliberty Jun 15, 2025
71480fb
update OR submodule
maliberty Jun 15, 2025
96bcefa
Merge branch 'master' into pdn-pins-layer
maliberty Jul 29, 2025
034e70e
tclfmt
maliberty Jul 29, 2025
89f5f3b
Merge branch 'master' into pdn-pins-layer
maliberty Aug 4, 2025
1ba585b
Merge branch 'master' into pdn-pins-layer
maliberty Sep 11, 2025
5d21b9f
Merge remote-tracking branch 'origin/master' into pdn-pins-layer
maliberty Sep 13, 2025
01c00f9
switch ihp pdn pins to TopMetal1
maliberty Sep 13, 2025
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2 changes: 1 addition & 1 deletion flow/platforms/asap7/openRoad/pdn/BLOCKS_grid_strategy.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {top} -voltage_domains {CORE}
define_pdn_grid -name {top} -voltage_domains {CORE} -pins {M6}
add_pdn_stripe -grid {top} -layer {M1} -width {0.018} -pitch {0.54} -offset {0} -followpins
add_pdn_stripe -grid {top} -layer {M2} -width {0.018} -pitch {0.54} -offset {0} -followpins
add_pdn_ring -grid {top} -layers {M5 M6} -widths {0.504 0.544} -spacings {0.096} -core_offset {0.504}
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2 changes: 1 addition & 1 deletion flow/platforms/asap7/openRoad/pdn/BLOCK_grid_strategy.tcl
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Expand Up @@ -18,7 +18,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
# put stripe on M5 track
# M4 M5 ring follow stripe width
####################################
define_pdn_grid -name {top} -voltage_domains {CORE}
define_pdn_grid -name {top} -voltage_domains {CORE} -pins {M5}

add_pdn_ring -grid {top} -layers {M5 M4} -widths {0.12 0.12} -spacings {0.072} -core_offset {0.084}

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2 changes: 1 addition & 1 deletion flow/platforms/asap7/openRoad/pdn/grid_strategy-M1-M2-M5-M6.tcl
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Expand Up @@ -14,7 +14,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {top} -voltage_domains {CORE}
define_pdn_grid -name {top} -voltage_domains {CORE} -pins {M6}
add_pdn_stripe -grid {top} -layer {M1} -width {0.018} -pitch {0.54} -offset {0} -followpins
add_pdn_stripe -grid {top} -layer {M2} -width {0.018} -pitch {0.54} -offset {0} -followpins
add_pdn_stripe -grid {top} -layer {M5} -width {0.12} -spacing {0.072} -pitch {5.4} -offset {0.300}
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2 changes: 1 addition & 1 deletion flow/platforms/gf180/openROAD/pdn/pdn_grid_strategy_7t_6M.cfg
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Expand Up @@ -18,7 +18,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {block} -voltage_domains {CORE}
define_pdn_grid -name {block} -voltage_domains {CORE} -pins {Metal5}
add_pdn_stripe -grid {block} -layer {Metal1} -width {0.600} -pitch {3.92} -offset {0} -followpins
add_pdn_stripe -grid {block} -layer {Metal4} -width {4.480} -spacing {0.56} -pitch {44.8} -offset {22.4}
add_pdn_stripe -grid {block} -layer {Metal5} -width {4.480} -pitch {89.6} -offset {44.8}
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2 changes: 1 addition & 1 deletion flow/platforms/gf180/openROAD/pdn/pdn_grid_strategy_9t_6M.cfg
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {block} -voltage_domains {CORE}
define_pdn_grid -name {block} -voltage_domains {CORE} -pins {Metal5}
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_stripe -grid {block} -layer {Metal5} -width {4.480} -pitch {89.6} -offset {44.8}
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2 changes: 1 addition & 1 deletion flow/platforms/ihp-sg13g2/pdn.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
#####################################
# standard cell grid
####################################
define_pdn_grid -name {grid} -voltage_domains {CORE}
define_pdn_grid -name {grid} -voltage_domains {CORE} -pins {TopMetal2}
add_pdn_ring -grid {grid} -layers {Metal5 TopMetal1} -widths {5.0} -spacings {2.0} -core_offsets {4.5} -connect_to_pads
add_pdn_stripe -grid {grid} -layer {Metal1} -width {0.44} -pitch {7.56} -offset {0} -followpins -extend_to_core_ring
add_pdn_stripe -grid {grid} -layer {Metal5} -width {2.200} -pitch {75.6} -offset {13.600} -extend_to_core_ring
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2 changes: 1 addition & 1 deletion flow/platforms/nangate45/grid_strategy-M1-M4-M7.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {grid} -voltage_domains {CORE}
define_pdn_grid -name {grid} -voltage_domains {CORE} -pins {metal7}
add_pdn_stripe -grid {grid} -layer {metal1} -width {0.17} -pitch {2.4} -offset {0} -followpins
add_pdn_stripe -grid {grid} -layer {metal4} -width {0.48} -pitch {56.0} -offset {2}
add_pdn_stripe -grid {grid} -layer {metal7} -width {1.40} -pitch {30.0} -offset {2}
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2 changes: 1 addition & 1 deletion flow/platforms/sky130hd/pdn.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {grid} -voltage_domains {CORE}
define_pdn_grid -name {grid} -voltage_domains {CORE} -pins {met5}
add_pdn_stripe -grid {grid} -layer {met1} -width {0.48} -pitch {5.44} -offset {0} -followpins
add_pdn_stripe -grid {grid} -layer {met4} -width {1.600} -pitch {27.140} -offset {13.570}
add_pdn_stripe -grid {grid} -layer {met5} -width {1.600} -pitch {27.200} -offset {13.600}
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2 changes: 1 addition & 1 deletion flow/platforms/sky130hs/pdn.tcl
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@ set_voltage_domain -name {CORE} -power {VDD} -ground {VSS}
####################################
# standard cell grid
####################################
define_pdn_grid -name {grid} -voltage_domains {CORE}
define_pdn_grid -name {grid} -voltage_domains {CORE} -pins {met5}
add_pdn_stripe -grid {grid} -layer {met1} -width {0.48} -pitch {6.66} -offset {0} -followpins
add_pdn_stripe -grid {grid} -layer {met4} -width {1.600} -pitch {27.140} -offset {13.570}
add_pdn_stripe -grid {grid} -layer {met5} -width {1.600} -pitch {27.200} -offset {13.600}
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