From 76f99e1ff159a667753830ac71001634914a572e Mon Sep 17 00:00:00 2001 From: Darrell Harmon Date: Mon, 23 Sep 2019 10:28:15 -0600 Subject: [PATCH] vendor.xilinx_spartan_3_6: override reset synchronizer. --- nmigen/vendor/xilinx_spartan_3_6.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/nmigen/vendor/xilinx_spartan_3_6.py b/nmigen/vendor/xilinx_spartan_3_6.py index 0a5df0e..382e3a1 100644 --- a/nmigen/vendor/xilinx_spartan_3_6.py +++ b/nmigen/vendor/xilinx_spartan_3_6.py @@ -419,6 +419,18 @@ class XilinxSpartan3Or6Platform(TemplatedPlatform): m.d.comb += ff_sync.o.eq(multireg._stages[-1]) return m + def get_reset_sync(self, resetsync): + m = Module() + m.domains += ClockDomain("reset_sync", async_reset=True, local=True) + for i, o in zip((0, *resetsync._stages), resetsync._stages): + o.attrs["ASYNC_REG"] = "TRUE" + m.d.reset_sync += o.eq(i) + m.d.comb += [ + ClockSignal("reset_sync").eq(ClockSignal(resetsync._domain)), + ResetSignal("reset_sync").eq(resetsync.arst), + ResetSignal(resetsync._domain).eq(resetsync._stages[-1]) + ] + return m XilinxSpartan3APlatform = XilinxSpartan3Or6Platform XilinxSpartan6Platform = XilinxSpartan3Or6Platform -- 2.30.2