From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Tue, 23 Jun 2020 14:53:02 +0000 (+0200)
Subject: soc/cores/uart/FT245: only use Asynchronous FIFO (Synchronous FIFO requires a softwar... 
X-Git-Tag: 24jan2021_ls180~154
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=64589cfd2b7f0bc4be81d0cca237b2c5c8de8381;p=litex.git

soc/cores/uart/FT245: only use Asynchronous FIFO (Synchronous FIFO requires a software configuration).
---

diff --git a/litex/soc/cores/uart.py b/litex/soc/cores/uart.py
index f9ffeace..201fdbb6 100644
--- a/litex/soc/cores/uart.py
+++ b/litex/soc/cores/uart.py
@@ -178,14 +178,10 @@ def _get_uart_fifo(depth, sink_cd="sys", source_cd="sys"):
         return stream.SyncFIFO([("data", 8)], depth, buffered=True)
 
 def UARTPHY(pads, clk_freq, baudrate):
-    # FT245 async FIFO mode (baudrate ignored)
+    # FT245 Asynchronous FIFO mode (baudrate ignored)
     if hasattr(pads, "rd_n") and hasattr(pads, "wr_n"):
         from litex.soc.cores.usb_fifo import FT245PHYAsynchronous
         return FT245PHYAsynchronous(pads, clk_freq)
-    # FT245 sync FIFO mode (baudrate ignored)
-    if hasattr(pads, "rd_n") and hasattr(pads, "wr_n") and hasattr(pads, "oe_n"):
-        from litex.soc.cores.usb_fifo import FT245PHYSynchronous
-        return FT245PHYSynchronous(pads, clk_freq)
     # RS232
     else:
         return  RS232PHY(pads, clk_freq, baudrate)