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.
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@ -143,7 +143,7 @@ class LatticeTrellisToolchain:
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self.build_template = [
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self.build_template = [
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"yosys -q -l {build_name}.rpt {build_name}.ys",
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"yosys -q -l {build_name}.rpt {build_name}.ys",
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"nextpnr-ecp5 --json {build_name}.json --lpf {build_name}.lpf --textcfg {build_name}.config --{architecture} --package {package} --freq {freq_constraint}",
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"nextpnr-ecp5 --json {build_name}.json --lpf {build_name}.lpf --textcfg {build_name}.config --{architecture} --package {package} --freq {freq_constraint} --timing-allow-fail",
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"ecppack {build_name}.config --svf {build_name}.svf --bit {build_name}.bit"
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"ecppack {build_name}.config --svf {build_name}.svf --bit {build_name}.bit"
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]
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]
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