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build/lattice/trellis: use --timing-allow-fail to allow generating bistream when timings are not met 

This is the default behaviour of the others tools and allow testing designs on hardware with small violations.
This commit is contained in:
Florent Kermarrec 2019-10-18 14:12:01 +02:00
parent 4cf346a1d4
commit 683e066812
1 changed files with 1 additions and 1 deletions
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2
litex/build/lattice/trellis.py
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@ -143,7 +143,7 @@ class LatticeTrellisToolchain:
self.build_template = [
"yosys -q -l {build_name}.rpt {build_name}.ys",
"nextpnr-ecp5 --json {build_name}.json --lpf {build_name}.lpf --textcfg {build_name}.config --{architecture} --package {package} --freq {freq_constraint}",
"nextpnr-ecp5 --json {build_name}.json --lpf {build_name}.lpf --textcfg {build_name}.config --{architecture} --package {package} --freq {freq_constraint} --timing-allow-fail",
"ecppack {build_name}.config --svf {build_name}.svf --bit {build_name}.bit"
]