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| author | YRabbit <rabbit@yrabbit.cyou> | 2022-11-20 22:04:09 +1000 |
|---|---|---|
| committer | YRabbit <rabbit@yrabbit.cyou> | 2022-11-20 22:04:09 +1000 |
| commit | 378ca60a2f29b7984c80f8ad9f665b5786fa524e (patch) | |
| tree | 9f06998c3e355045370dabb8ddafcaeb19be9246 /gowin | |
| parent | c8406b71fe62860031a9be829a6e0378c6fcf1ee (diff) | |
| download | nextpnr-378ca60a2f29b7984c80f8ad9f665b5786fa524e.tar.gz nextpnr-378ca60a2f29b7984c80f8ad9f665b5786fa524e.tar.bz2 nextpnr-378ca60a2f29b7984c80f8ad9f665b5786fa524e.zip | |
gowin: mark the PLL ports that are not in use
Unused ports are deactivated by special fuse combinations, rather than
being left dangling in the air.
Signed-off-by: YRabbit <rabbit@yrabbit.cyou>
Diffstat (limited to 'gowin')
| -rw-r--r-- | gowin/constids.inc | 8 | ||||
| -rw-r--r-- | gowin/pack.cc | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/gowin/constids.inc b/gowin/constids.inc index 59f364e7..e0b37b49 100644 --- a/gowin/constids.inc +++ b/gowin/constids.inc @@ -931,6 +931,14 @@ X(CLKOUTD) X(CLKOUTD3) X(LOCK) +// PLL parameters +X(CLKOUTPS) +X(CLKOUTDIV) +X(CLKOUTDIV3) +X(PWDEN) +X(RSTEN) +X(FLOCK) + // timing X(X0) X(FX1) diff --git a/gowin/pack.cc b/gowin/pack.cc index dc0b1461..1e0380c1 100644 --- a/gowin/pack.cc +++ b/gowin/pack.cc @@ -1019,6 +1019,14 @@ static void pack_plls(Context *ctx) switch (ci->type.hash()) { case ID_rPLL: { if (parm_device == "GW1N-1" || parm_device == "GW1NZ-1") { + // Unused ports will be disabled during image generation. Here we add flags for such ports. + Property pr_enable("ENABLE"), pr_disable("DISABLE"); + IdString ports[][2] = {{id_CLKOUTP, id_CLKOUTPS}, {id_CLKOUTD, id_CLKOUTDIV}, + {id_CLKOUTD3, id_CLKOUTDIV3}, {id_LOCK, id_FLOCK}, + {id_RESET_P, id_PWDEN}, {id_RESET, id_RSTEN}}; + for (int i = 0; i < 6; ++i) { + ci->setParam(ports[i][1], port_used(ci, ports[i][0]) ? pr_enable : pr_disable); + } // B half std::unique_ptr<CellInfo> cell = create_generic_cell(ctx, id_RPLLB, ci->name.str(ctx) + "$rpllb"); reconnect_rpllb(ctx, ci, cell.get()); |