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| author | gatecat <gatecat@ds0.me> | 2022-02-04 20:49:32 +0000 |
|---|---|---|
| committer | gatecat <gatecat@ds0.me> | 2022-02-04 20:49:32 +0000 |
| commit | e5bfff6e9fbbbc743c504365ab41e4112aefb6d6 (patch) | |
| tree | 86697d34fbd0acd8203212080f8f4d3a86a7daf5 /generic/viaduct_helpers.h | |
| parent | 5ef5c33e9e964a176040c829adc965ec46331d77 (diff) | |
| download | nextpnr-e5bfff6e9fbbbc743c504365ab41e4112aefb6d6.tar.gz nextpnr-e5bfff6e9fbbbc743c504365ab41e4112aefb6d6.tar.bz2 nextpnr-e5bfff6e9fbbbc743c504365ab41e4112aefb6d6.zip | |
viaduct: Allow constraining only cascades without fanout
Signed-off-by: gatecat <gatecat@ds0.me>
Diffstat (limited to 'generic/viaduct_helpers.h')
| -rw-r--r-- | generic/viaduct_helpers.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/generic/viaduct_helpers.h b/generic/viaduct_helpers.h index 8cba8411..cac22304 100644 --- a/generic/viaduct_helpers.h +++ b/generic/viaduct_helpers.h @@ -70,7 +70,8 @@ struct ViaductHelpers // expects a set of top-level port types void remove_nextpnr_iobs(const pool<CellTypePort> &top_ports); // Constrain cells with certain port connection patterns together with a fixed z-offset - int constrain_cell_pairs(const pool<CellTypePort> &src_ports, const pool<CellTypePort> &sink_ports, int delta_z); + int constrain_cell_pairs(const pool<CellTypePort> &src_ports, const pool<CellTypePort> &sink_ports, int delta_z, + bool allow_fanout = true); // Replace constants with given driving cells void replace_constants(CellTypePort vcc_driver, CellTypePort gnd_driver, const dict<IdString, Property> &vcc_params = {}, |