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ecp5: Copy timing constraints across ECLKBRIDGECS

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-11-01 16:27:51 +00:00
parent 58b7cb920f
commit 21c09c8b8f
1 changed files with 4 additions and 1 deletions
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5
ecp5/pack.cc
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@ -2613,7 +2613,7 @@ class Ecp5Packer
std::unordered_set<IdString> changed_cells;
for (auto net : changed_nets)
for (auto &user : ctx->nets.at(net)->users)
if (user.port == id_CLKI || user.port == id_ECLKI)
if (user.port == id_CLKI || user.port == id_ECLKI || user.port == id_CLK0 || user.port == id_CLK1)
changed_cells.insert(user.cell->name);
changed_nets.clear();
for (auto cell : sorted(changed_cells)) {
@ -2630,6 +2630,9 @@ class Ecp5Packer
copy_constraint(ci, id_CLKI, id_CDIVX, ratio);
} else if (ci->type == id_ECLKSYNCB || ci->type == id_TRELLIS_ECLKBUF) {
copy_constraint(ci, id_ECLKI, id_ECLKO, 1);
} else if (ci->type == id_ECLKBRIDGECS) {
copy_constraint(ci, id_CLK0, id_ECSOUT, 1);
copy_constraint(ci, id_CLK1, id_ECSOUT, 1);
} else if (ci->type == id_DCCA) {
copy_constraint(ci, id_CLKI, id_CLKO, 1);
} else if (ci->type == id_EHXPLLL) {