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ice40: Add timing arcs through global buffers

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-08-08 16:34:41 +02:00
parent d173ddba36
commit e6eb203868
1 changed files with 4 additions and 0 deletions
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4
ice40/arch.cc
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@ -953,6 +953,10 @@ TimingPortClass Arch::getPortTimingClass(const CellInfo *cell, IdString port, Id
if (port == id("CLKHF"))
return TMG_GEN_CLOCK;
return TMG_IGNORE;
} else if (cell->type == id_sb_gb) {
if (port == id_glb_buf_out)
return TMG_COMB_OUTPUT;
return TMG_COMB_INPUT;
}
return TMG_IGNORE;
}