gsd_butterstick: Remove ECLKBRIDGECS (not required).

litex_boards/targets/gsd_butterstick.py

@@ -61,20 +61,14 @@ class _CRG(Module):
         self.sync.por += If(~por_done, por_count.eq(por_count - 1))
 
         # PLL
-        sys2x_clk_ecsout = Signal()
         self.submodules.pll = pll = ECP5PLL()
         self.comb += pll.reset.eq(~por_done | ~rst_n | self.rst)
         pll.register_clkin(clk30, 30e6)
         pll.create_clkout(self.cd_sys2x_i, 2*sys_clk_freq)
         pll.create_clkout(self.cd_init,   25e6)
         self.specials += [
-            Instance("ECLKBRIDGECS",
-                i_CLK0   = self.cd_sys2x_i.clk,
-                i_SEL    = 0,
-                o_ECSOUT = sys2x_clk_ecsout,
-            ),
             Instance("ECLKSYNCB",
-                i_ECLKI = sys2x_clk_ecsout,
+                i_ECLKI = self.cd_sys2x_i.clk,
                 i_STOP  = self.stop,
                 o_ECLKO = self.cd_sys2x.clk),
             Instance("CLKDIVF",