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Check that HarnessClockInstantiator doesn't receive requests for similarly-named-clocks with different frequencies #1460

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May 6, 2023
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Check that HarnessClockInstantiator doesn't receive requests for similarly-named-clocks with different frequencies #1460

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12 changes: 9 additions & 3 deletions generators/chipyard/src/main/scala/HarnessClocks.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -21,9 +21,15 @@ trait HarnessClockInstantiator {

// request a clock bundle at a particular frequency
def requestClockBundle(name: String, freqRequested: Double): ClockBundle = {
val clockBundle = Wire(new ClockBundle(ClockBundleParameters()))
_clockMap(name) = (freqRequested, clockBundle)
clockBundle
if (_clockMap.contains(name)) {
require(freqRequested == _clockMap(name)._1,
s"Request clock freq = $freqRequested != previously requested ${_clockMap(name)._2} for requested clock $name")
_clockMap(name)._2
} else {
val clockBundle = Wire(new ClockBundle(ClockBundleParameters()))
_clockMap(name) = (freqRequested, clockBundle)
clockBundle
}
}

// refClock is the clock generated by TestDriver that is
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