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grt/drt: Add support for routing secondary power net from gate to the nearby related strap

Open titan73 opened this issue 2 months ago • 0 comments

Description

As discussed in https://github.com/The-OpenROAD-Project/OpenROAD/discussions/8734.

The net should be treated as a signal and routed as normal net. Here is an example:

Image

The grid is created with 3 nets: VDDD1V2, VDDD and GNDD. The VDDD1V2 and GNDD straps connect to the power rails in metal1. However PDN supports only 2 nets, 1 for power and 1 for ground. The primary power/ground of the level shifter are VDDD1V2 and GNDD. The secondary power should be treated as a signal and routed during the routing step. The route starts from the secondary power pin and connects to the VDDD strap.

Suggested Solution

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Additional Context

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titan73 avatar Oct 31 '25 15:10 titan73