re-add CRG (clock reset generator)

diff --git a/src/soc/litex/sim.py b/src/soc/litex/sim.py
index 8707ba000b16f27a8989b08820a1bd0b9c0f2701..3c3dcbae0ae27c13f08b3c7eb95c608752692790 100644 (file)
--- a/src/soc/litex/sim.py
+++ b/src/soc/litex/sim.py
@@ -7,10 +7,9 @@
 import os
 import argparse
 
-from migen import ClockDomain
-
 from litex.build.generic_platform import Pins, Subsignal
 from litex.build.sim import SimPlatform
+from litex.build.io import CRG
 from litex.build.sim.config import SimConfig
 
 from litex.soc.integration.soc import SoCRegion
@@ -76,11 +75,8 @@ class SoCSMP(SoCCore):
         self.platform.name = "sim"
         self.add_constant("SIM")
 
-        self.clock_domains.cd_sys = ClockDomain()
-        self.comb += [
-            self.cd_sys.clk.eq(platform.request("sys_clk")),
-            self.cd_sys.rst.eq(platform.request("sys_rst"))
-        ]
+        # CRG -------------------------------------------------------
+        self.submodules.crg = CRG(platform.request("sys_clk"))
 
         # SDRAM ----------------------------------------------------------
         phy_settings = get_sdram_phy_settings(