diff --git a/bench/genesys2.py b/bench/genesys2.py
index 71a09ef..382a28a 100755
--- a/bench/genesys2.py
+++ b/bench/genesys2.py
@@ -59,7 +59,7 @@ class _CRG(Module, AutoCSR):
 # Bench SoC ----------------------------------------------------------------------------------------
 
 class BenchSoC(SoCCore):
-    def __init__(self, uart_name="serial", sys_clk_freq=int(175e6)):
+    def __init__(self, uart="crossover", sys_clk_freq=int(175e6)):
         platform = genesys2.Platform()
 
         # SoCCore ----------------------------------------------------------------------------------
@@ -67,7 +67,7 @@ class BenchSoC(SoCCore):
             integrated_rom_size = 0x8000,
             integrated_rom_mode = "rw",
             csr_data_width      = 32,
-            uart_name           = uart_name)
+            uart_name           = uart)
 
         # CRG --------------------------------------------------------------------------------------
         self.submodules.crg = _CRG(platform, sys_clk_freq)
@@ -77,8 +77,7 @@ class BenchSoC(SoCCore):
         self.submodules.ddrphy = s7ddrphy.K7DDRPHY(platform.request("ddram"),
             memtype      = "DDR3",
             nphases      = 4,
-            sys_clk_freq = sys_clk_freq,
-            cmd_latency  = 0)
+            sys_clk_freq = sys_clk_freq)
         self.add_csr("ddrphy")
         self.add_sdram("sdram",
             phy    = self.ddrphy,
@@ -87,7 +86,7 @@ class BenchSoC(SoCCore):
         )
 
         # UARTBone ---------------------------------------------------------------------------------
-        if uart_name != "serial":
+        if uart != "serial":
             self.add_uartbone(name="serial", clk_freq=100e6, baudrate=115200, cd="uart")
 
         # Etherbone --------------------------------------------------------------------------------
@@ -109,6 +108,7 @@ class BenchSoC(SoCCore):
 
 def main():
     parser = argparse.ArgumentParser(description="LiteDRAM Bench on Genesys2")
+    parser.add_argument("--uart",        default="crossover", help="Selected UART: crossover (default) or serial")
     parser.add_argument("--build",       action="store_true", help="Build bitstream")
     parser.add_argument("--load",        action="store_true", help="Load bitstream")
     parser.add_argument("--load-bios",   action="store_true", help="Load BIOS")
@@ -116,7 +116,7 @@ def main():
     parser.add_argument("--test",        action="store_true", help="Run Full Bench")
     args = parser.parse_args()
 
-    soc     = BenchSoC()
+    soc     = BenchSoC(uart=args.uart)
     builder = Builder(soc, csr_csv="csr.csv")
     builder.build(run=args.build)
 
@@ -124,7 +124,7 @@ def main():
         prog = soc.platform.create_programmer()
         prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".bit"))
 
-    if args.load_bios is not None:
+    if args.load_bios:
         from common import s7_load_bios
         s7_load_bios("build/genesys2/software/bios/bios.bin")