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Merge pull request #1045 from yrabbit/unused-ports

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gowin: mark the PLL ports that are not in use
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myrtle 2022-11-20 13:55:01 +01:00 committed by GitHub
commit c61d490bd4
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2 changed files with 16 additions and 0 deletions
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8
gowin/constids.inc
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@ -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)

8
gowin/pack.cc
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@ -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());