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ice40: Don't create PLLOUT_B buffer for single-output PLL variants

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2019-02-09 10:31:24 +00:00
parent db990d2175
commit 170bf8a5ec
1 changed files with 6 additions and 1 deletions
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7
ice40/pack.cc
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@ -1063,7 +1063,12 @@ static void pack_special(Context *ctx)
create_ice_cell(ctx, ctx->id("ICESTORM_PLL"), ci->name.str(ctx) + "_PLL");
packed->attrs[ctx->id("TYPE")] = ci->type.str(ctx);
packed_cells.insert(ci->name);
if (!is_sb_pll40_dual(ctx, ci)) {
// Remove second output, so a buffer isn't created for it, for these
// cell types with only one output
packed->ports.erase(ctx->id("PLLOUT_B"));
packed->ports.erase(ctx->id("PLLOUT_B_GLOBAL"));
}
for (auto attr : ci->attrs)
packed->attrs[attr.first] = attr.second;
for (auto param : ci->params)