efinix_xyloni_dev_kit: Use PLL.

litex_boards/targets/efinix_xyloni_dev_kit.py

@@ -35,11 +35,7 @@ class _CRG(Module):
         clk33 = platform.request("clk33")
         rst_n = platform.request("user_btn", 0)
 
-        if sys_clk_freq == int(33.333e6):
-            self.comb += self.cd_sys.clk.eq(clk33)
-            self.specials += AsyncResetSynchronizer(self.cd_sys, ~rst_n)
-        else:
-            # PLL TODO: V1 simple pll not supported in infrastructure yet
+        # PLL.
         self.submodules.pll = pll = TRIONPLL(platform)
         self.comb += pll.reset.eq(~rst_n)
         pll.register_clkin(clk33, 33.333e6)