From 3f43c6a223283a1fee82cfa71be83cb48ae68c0b Mon Sep 17 00:00:00 2001 From: Florent Kermarrec Date: Wed, 25 Mar 2020 18:53:00 +0100 Subject: [PATCH] integration/soc/add_uart: cleanup. --- litex/soc/integration/soc.py | 44 +++++++++++++++++++++++++----------- 1 file changed, 31 insertions(+), 13 deletions(-) diff --git a/litex/soc/integration/soc.py b/litex/soc/integration/soc.py index fc9a739a..91d44602 100644 --- a/litex/soc/integration/soc.py +++ b/litex/soc/integration/soc.py @@ -912,33 +912,51 @@ class LiteXSoC(SoC): # Add UART ------------------------------------------------------------------------------------- def add_uart(self, name, baudrate=115200, fifo_depth=16): from litex.soc.cores import uart + + # Stub / Stream if name in ["stub", "stream"]: self.submodules.uart = uart.UART(tx_fifo_depth=0, rx_fifo_depth=0) if name == "stub": self.comb += self.uart.sink.ready.eq(1) - elif name == "bridge": + + # Bridge + elif name in ["bridge"]: self.submodules.uart = uart.UARTWishboneBridge( pads = self.platform.request("serial"), clk_freq = self.sys_clk_freq, baudrate = baudrate) self.bus.add_master(name="uart_bridge", master=self.uart.wishbone) - elif name == "crossover": + + # Crossover + elif name in ["crossover"]: self.submodules.uart = uart.UARTCrossover() + + # JTAG Atlantic + elif name in ["jtag_atlantic"]: + from litex.soc.cores.jtag import JTAGAtlantic + self.submodules.uart_phy = JTAGAtlantic() + self.submodules.uart = ResetInserter()(uart.UART(self.uart_phy, + tx_fifo_depth = fifo_depth, + rx_fifo_depth = fifo_depth)) + + # JTAG UART + elif name in ["jtag_uart"]: + from litex.soc.cores.jtag import JTAGPHY + self.submodules.uart_phy = JTAGPHY(device=self.platform.device) + self.submodules.uart = ResetInserter()(uart.UART(self.uart_phy, + tx_fifo_depth = fifo_depth, + rx_fifo_depth = fifo_depth)) + + # Classic UART else: - if name == "jtag_atlantic": - from litex.soc.cores.jtag import JTAGAtlantic - self.submodules.uart_phy = JTAGAtlantic() - elif name == "jtag_uart": - from litex.soc.cores.jtag import JTAGPHY - self.submodules.uart_phy = JTAGPHY(device=self.platform.device) - else: - self.submodules.uart_phy = uart.UARTPHY( - pads = self.platform.request(name), - clk_freq = self.sys_clk_freq, - baudrate = baudrate) + self.submodules.uart_phy = uart.UARTPHY( + pads = self.platform.request(name), + clk_freq = self.sys_clk_freq, + baudrate = baudrate) self.submodules.uart = ResetInserter()(uart.UART(self.uart_phy, tx_fifo_depth = fifo_depth, rx_fifo_depth = fifo_depth)) + self.csr.add("uart_phy", use_loc_if_exists=True) self.csr.add("uart", use_loc_if_exists=True) self.irq.add("uart", use_loc_if_exists=True) -- 2.30.2