Summary
On the 2026-06 upgrade, litepci-sky130hd cannot route on the new global router — GRT-0116 / GRT-0183 congestion, unroutable. A GRT-congestion retune (util 30 loops / util 24 GRT-0116) did not clear it. Does not reach 6_final.
Detail
litepci-asap7 (+945 ps) and litepci-nangate45 close on the new tools; only sky130hd's coarse pitch fails the new GRT. The design also keeps an ODB-1200-family SKIP_INCREMENTAL_REPAIR because the new resizer's repair_timing does not converge here (~23 h GRT spin otherwise).
Scope
Out of scope without SDC/RTL change. See designs/src/litepci/DECISIONS.md (sky130hd). Part of PR #195.
Summary
On the 2026-06 upgrade, litepci-sky130hd cannot route on the new global router — GRT-0116 / GRT-0183 congestion, unroutable. A GRT-congestion retune (util 30 loops / util 24 GRT-0116) did not clear it. Does not reach
6_final.Detail
litepci-asap7 (+945 ps) and litepci-nangate45 close on the new tools; only sky130hd's coarse pitch fails the new GRT. The design also keeps an ODB-1200-family
SKIP_INCREMENTAL_REPAIRbecause the new resizer'srepair_timingdoes not converge here (~23 h GRT spin otherwise).Scope
Out of scope without SDC/RTL change. See
designs/src/litepci/DECISIONS.md(sky130hd). Part of PR #195.