diff --git a/liteeth/phy/gmii.py b/liteeth/phy/gmii.py
index 908c331..7801538 100644
--- a/liteeth/phy/gmii.py
+++ b/liteeth/phy/gmii.py
@@ -7,21 +7,17 @@ from liteeth.phy.common import *
 
 
 class LiteEthPHYGMIITX(Module):
-    def __init__(self, pads, pads_register=True):
+    def __init__(self, pads):
         self.sink = sink = Sink(eth_phy_description(8))
 
         # # #
 
         if hasattr(pads, "tx_er"):
             self.sync += pads.tx_er.eq(0)
-        pads_eq = [
+        self.sync += [
             pads.tx_en.eq(sink.stb),
             pads.tx_data.eq(sink.data)
         ]
-        if pads_register:
-            self.sync += pads_eq
-        else:
-            self.comb += pads_eq
         self.comb += sink.ack.eq(1)
 
 
diff --git a/liteeth/phy/gmii_mii.py b/liteeth/phy/gmii_mii.py
index 25a5eab..54fb004 100644
--- a/liteeth/phy/gmii_mii.py
+++ b/liteeth/phy/gmii_mii.py
@@ -27,11 +27,11 @@ class LiteEthPHYGMIIMIITX(Module):
         # # #
 
         gmii_tx_pads = Record(tx_pads_layout)
-        gmii_tx = LiteEthPHYGMIITX(gmii_tx_pads, pads_register=False)
+        gmii_tx = LiteEthPHYGMIITX(gmii_tx_pads)
         self.submodules += gmii_tx
 
         mii_tx_pads = Record(tx_pads_layout)
-        mii_tx = LiteEthPHYMIITX(mii_tx_pads, pads_register=False)
+        mii_tx = LiteEthPHYMIITX(mii_tx_pads)
         self.submodules += mii_tx
 
         demux = Demultiplexer(eth_phy_description(8), 2)
diff --git a/liteeth/phy/mii.py b/liteeth/phy/mii.py
index cdbeb1e..df59be5 100644
--- a/liteeth/phy/mii.py
+++ b/liteeth/phy/mii.py
@@ -11,7 +11,7 @@ def converter_description(dw):
 
 
 class LiteEthPHYMIITX(Module):
-    def __init__(self, pads, pads_register=True):
+    def __init__(self, pads):
         self.sink = sink = Sink(eth_phy_description(8))
 
         # # #
@@ -27,14 +27,10 @@ class LiteEthPHYMIITX(Module):
             sink.ack.eq(converter.sink.ack),
             converter.source.ack.eq(1)
         ]
-        pads_eq = [
+        self.sync += [
             pads.tx_en.eq(converter.source.stb),
             pads.tx_data.eq(converter.source.data)
         ]
-        if pads_register:
-            self.sync += pads_eq
-        else:
-            self.comb += pads_eq
 
 
 class LiteEthPHYMIIRX(Module):
diff --git a/liteeth/phy/s6rgmii.py b/liteeth/phy/s6rgmii.py
index 6e89833..889b412 100644
--- a/liteeth/phy/s6rgmii.py
+++ b/liteeth/phy/s6rgmii.py
@@ -11,7 +11,7 @@ from liteeth.phy.common import *
 
 
 class LiteEthPHYRGMIITX(Module):
-    def __init__(self, pads, pads_register=True):
+    def __init__(self, pads):
         self.sink = sink = Sink(eth_phy_description(8))
 
         # # #
diff --git a/liteeth/phy/s7rgmii.py b/liteeth/phy/s7rgmii.py
index b82fbf3..6cd34da 100644
--- a/liteeth/phy/s7rgmii.py
+++ b/liteeth/phy/s7rgmii.py
@@ -11,7 +11,7 @@ from liteeth.phy.common import *
 
 
 class LiteEthPHYRGMIITX(Module):
-    def __init__(self, pads, pads_register=True):
+    def __init__(self, pads):
         self.sink = sink = Sink(eth_phy_description(8))
 
         # # #