diff --git a/liteeth/phy/usp_gth_1000basex.py b/liteeth/phy/usp_gth_1000basex.py
index 7dad96a..4c89eb0 100644
--- a/liteeth/phy/usp_gth_1000basex.py
+++ b/liteeth/phy/usp_gth_1000basex.py
@@ -565,13 +565,6 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_DRPDI               = 0b0000000000000000,
             i_DRPEN               = 0b0,
             i_DRPWE               = 0b0,
-            #i_EVODDPHICALDONE     = 0b0,
-            #i_EVODDPHICALSTART    = 0b0,
-            #i_EVODDPHIDRDEN       = 0b0,
-            #i_EVODDPHIDWREN       = 0b0,
-            #i_EVODDPHIXRDEN       = 0b0,
-            #i_EVODDPHIXWREN       = 0b0,
-            #i_EYESCANMODE         = 0b0,
             i_EYESCANRESET        = 0b0,
             i_EYESCANTRIGGER      = 0b0,
             i_GTGREFCLK           = refclk,
@@ -581,34 +574,26 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_GTNORTHREFCLK1      = 0b0,
             i_GTREFCLK0           = 0b0,
             i_GTREFCLK1           = 0b0,
-            #i_GTRESETSEL          = 0b0,
             i_GTRSVD              = 0b0000000000000000,
             i_GTRXRESET           = rx_reset,
             i_GTSOUTHREFCLK0      = 0b0,
             i_GTSOUTHREFCLK1      = 0b0,
             i_GTTXRESET           = tx_reset,
             i_LOOPBACK            = 0b000,
-            #i_LPBKRXTXSEREN       = 0b0,
-            #i_LPBKTXRXSEREN       = 0b0,
             i_PCIEEQRXEQADAPTDONE = 0b0,
             i_PCIERSTIDLE         = 0b0,
             i_PCIERSTTXSYNCSTART  = 0b0,
             i_PCIEUSERRATEDONE    = 0b0,
-            #i_PCSRSVDIN2          = 0b00000,
-            #i_PCSRSVDIN           = 0b0000000000000000,
-            #i_PMARSVDIN           = 0b00000,
             i_QPLL0CLK            = 0b0,
             i_QPLL0REFCLK         = 0b0,
             i_QPLL1CLK            = 0b0,
             i_QPLL1REFCLK         = 0b0,
             i_RESETOVRD           = 0b0,
-            #i_RSTCLKENTX          = 0b0,
             i_RX8B10BEN           = 0b0,
             i_RXBUFRESET          = 0b0,
             i_RXCDRFREQRESET      = 0b0,
             i_RXCDRHOLD           = 0b0,
             i_RXCDROVRDEN         = 0b0,
-            #i_RXCDRRESETRSV       = 0b0,
             i_RXCDRRESET          = 0b0,
             i_RXCHBONDEN          = 0b0,
             i_RXCHBONDI           = 0b00000,
@@ -654,7 +639,6 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_RXDFEUTOVRDEN       = 0b0,
             i_RXDFEVPHOLD         = 0b0,
             i_RXDFEVPOVRDEN       = 0b0,
-            #i_RXDFEVSEN           = 0b0,
             i_RXDFEXYDEN          = 0b1,
             i_RXDLYBYPASS         = 0b1,
             i_RXDLYEN             = 0b0,
@@ -677,12 +661,6 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_RXOOBRESET          = 0b0,
             i_RXOSCALRESET        = 0b0,
             i_RXOSHOLD            = 0b0,
-            #i_RXOSINTCFG          = 0b1101,
-            #i_RXOSINTEN           = 0b1,
-            #i_RXOSINTHOLD         = 0b0,
-            #i_RXOSINTOVRDEN       = 0b0,
-            #i_RXOSINTSTROBE       = 0b0,
-            #i_RXOSINTTESTOVRDEN   = 0b0,
             i_RXOSOVRDEN          = 0b0,
             i_RXOUTCLKSEL         = 0b101,
             i_RXPCOMMAALIGNEN     = 0b0,
@@ -716,7 +694,6 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_TSTIN               = 0b00000000000000000000,
             i_TX8B10BBYPASS       = 0b00000000,
             i_TX8B10BEN           = 0b0,
-            #_TXBUFDIFFCTRL       = 0b000,
             i_TXCOMINIT           = 0b0,
             i_TXCOMSAS            = 0b0,
             i_TXCOMWAKE           = 0b0,
@@ -728,7 +705,6 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_TXDEEMPH            = 0b0,
             i_TXDETECTRX          = 0b0,
             i_TXDIFFCTRL          = 0b1100,
-            #i_TXDIFFPD            = 0b0,
             i_TXDLYBYPASS         = 0b1,
             i_TXDLYEN             = 0b0,
             i_TXDLYHOLD           = 0b0,
@@ -761,15 +737,11 @@ class USP_GTH_1000BASEX(LiteXModule):
             i_TXPLLCLKSEL         = 0b00,
             i_TXPMARESET          = 0b0,
             i_TXPOLARITY          = tx_polarity,
-            #i_TXPOSTCURSORINV     = 0b0,
-            #i_TXPOSTCURSOR        = 0b00000,
             i_TXPRBSFORCEERR      = 0b0,
             i_TXPRBSSEL           = 0b0000,
-            #i_TXPRECURSORINV      = 0b0,
             i_TXPRECURSOR         = 0b00000,
             i_TXPROGDIVRESET      = 0b0,
             i_TXQPIBIASEN         = 0b0,
-            #i_TXQPISTRONGPDOWN    = 0b0,
             i_TXQPIWEAKPUP        = 0b0,
             i_TXRATEMODE          = 0b0,
             i_TXRATE              = 0b000,