diff --git a/litedram/phy/kusddrphy.py b/litedram/phy/kusddrphy.py
index 0760049..ad94733 100644
--- a/litedram/phy/kusddrphy.py
+++ b/litedram/phy/kusddrphy.py
@@ -164,7 +164,7 @@ class KUSDDRPHY(Module, AutoCSR):
 
                     o_OQ=dqs_nodelay, o_T_OUT=dqs_t,
                     i_RST=ResetSignal(),
-                    i_CLK=ClockSignal("sys4x"), i_CLKDIV=ClockSignal(),
+                    i_CLK=ClockSignal("sys4x_dqs"), i_CLKDIV=ClockSignal(),
                     i_D=Cat(dqs_serdes_pattern[0], dqs_serdes_pattern[1],
                             dqs_serdes_pattern[2], dqs_serdes_pattern[3],
                             dqs_serdes_pattern[4], dqs_serdes_pattern[5],
@@ -174,9 +174,6 @@ class KUSDDRPHY(Module, AutoCSR):
                 Instance("ODELAYE3",
                     p_CASCADE="NONE", p_UPDATE_MODE="ASYNC", p_REFCLK_FREQUENCY=200.0,
                     p_IS_CLK_INVERTED=0, p_IS_RST_INVERTED=0,
-                    # we should preconfigure delay to 500ps with tCK=5ns but since tap
-                    # size can vary between 2.5 to 15 ps across PVT, set initial delay
-                    # to 0 and let the software configure it.
                     p_DELAY_FORMAT="COUNT", p_DELAY_TYPE="VARIABLE", p_DELAY_VALUE=0,
 
                     i_CLK=ClockSignal(),