diff --git a/litex/build/efinix/common.py b/litex/build/efinix/common.py
index 0c9d014b74..5b8030e022 100644
--- a/litex/build/efinix/common.py
+++ b/litex/build/efinix/common.py
@@ -66,19 +66,34 @@ def lower(dr):
 # Efinix Clk Input ---------------------------------------------------------------------------------
 
 class EfinixClkInputImpl(Module):
+    n = 0
     def __init__(self, platform, i, o):
-        o_clk  = platform.add_iface_io(o) # FIXME.
+        self.name = f"clk_input{self.n}"
+        if isinstance(o, Signal):
+            clk_out_name = f"{o.name_override}{self.name}_clk"
+            platform.add_extension([(clk_out_name, 0, Pins(1))])
+            platform.toolchain.excluded_ios.append(clk_out_name)
+            clk_out                        = platform.request(clk_out_name)
+            platform.clks[o.name_override] = clk_out_name
+        else:
+            clk_out      = platform.add_iface_io(o) # FIXME.
+            clk_out_name = platform.get_pin_name(clk_out)
+
         block = {
             "type"       : "GPIO",
             "size"       : 1,
             "location"   : platform.get_pin_location(i)[0],
             "properties" : platform.get_pin_properties(i),
-            "name"       : platform.get_pin_name(o_clk),
+            "name"       : clk_out_name,
             "mode"       : "INPUT_CLK",
         }
         platform.toolchain.ifacewriter.blocks.append(block)
         platform.toolchain.excluded_ios.append(i)
 
+        if isinstance(o, Signal):
+            self.comb += o.eq(clk_out)
+            o = clk_out
+        EfinixClkInputImpl.n += 1 # FIXME: Improve.
 
 class EfinixClkInput(Module):
     @staticmethod
diff --git a/litex/build/efinix/ifacewriter.py b/litex/build/efinix/ifacewriter.py
index f9e9cae781..6a53c8ccb3 100644
--- a/litex/build/efinix/ifacewriter.py
+++ b/litex/build/efinix/ifacewriter.py
@@ -212,8 +212,17 @@ def generate_gpio(self, block, verbose=True):
                 for i, pad in enumerate(block["location"]):
                     cmd += f'design.assign_pkg_pin("{name}[{i}]","{pad}")\n'
             if "in_reg" in block:
+                in_clk_pin = block["in_clk_pin"]
+                if isinstance(in_clk_pin, ClockSignal):
+                    # Try to find cd name
+                    in_clk_pin_name = self.platform.clks.get(in_clk_pin.cd, None)
+                    # If not found cd name has been updated with "_clk" as suffix.
+                    if in_clk_pin_name is None:
+                        in_clk_pin_name = self.platform.clks.get(in_clk_pin.cd + "_clk")
+                    in_clk_pin = in_clk_pin_name
+
                 cmd += f'design.set_property("{name}","IN_REG","{block["in_reg"]}")\n'
-                cmd += f'design.set_property("{name}","IN_CLK_PIN","{block["in_clk_pin"]}")\n'
+                cmd += f'design.set_property("{name}","IN_CLK_PIN","{in_clk_pin}")\n'
                 if "in_delay" in block:
                     cmd += f'design.set_property("{name}","INDELAY","{block["in_delay"]}")\n'
             if prop: