serwb/core/SERWBCore: Disconnect phy.sink from tx_fifo.source when RX…

… signals Wait.

liteiclink/serwb/core.py

@@ -54,7 +54,7 @@ def __init__(self, phy, clk_freq, mode, with_rst_on_link_down=True, port=0,
         self.comb += [
             # Core -> PHY.
             packetizer.source.connect(tx_fifo.sink),
-            tx_fifo.source.connect(phy.sink),
+            If(~phy.serdes.rx.datapath.wait, tx_fifo.source.connect(phy.sink)),
 
             # PHY -> Core.
             phy.source.connect(rx_fifo.sink),