Add initial Decklink Intensity Pro 4K support (with documented PCIe / Untested).

litex_boards/platforms/decklink_intensity_pro_4k.py

+#
+# This file is part of LiteX-Boards.
+#
+# Copyright (c) 2021 Florent Kermarrec <florent@enjoy-digital.fr>
+# SPDX-License-Identifier: BSD-2-Clause
+
+from litex.build.generic_platform import *
+from litex.build.xilinx import XilinxPlatform
+from litex.build.openocd import OpenOCD
+
+# IOs ----------------------------------------------------------------------------------------------
+
+_io = [
+    # Clk / Rst.
+
+    # TODO.
+
+    # Debug.
+    ("debug", 0, Pins("R22"), IOStandard("LVCMOS33")),
+    ("debug", 1, Pins("P21"), IOStandard("LVCMOS33")),
+    ("debug", 2, Pins("P23"), IOStandard("LVCMOS33")),
+    ("debug", 3, Pins("N23"), IOStandard("LVCMOS33")),
+
+    # Fan.
+    ("fan", 0, Pins("K18"), IOStandard("LVCMOS33")),
+
+    # Flash.
+    ("flash_cs_n", 0, Pins("C23"), IOStandard("LVCMOS33")),
+    ("flash", 0,
+        Subsignal("mosi", Pins("B24")),
+        Subsignal("miso", Pins("A25")),
+        Subsignal("vpp",  Pins("B22")),
+        Subsignal("hold", Pins("A22")),
+        IOStandard("LVCMOS33")
+    ),
+
+    # PCIe.
+    ("pcie_x4", 0,
+        Subsignal("rst_n", Pins("K15"), IOStandard("LVCMOS33"), Misc("PULLUP=TRUE")),
+        Subsignal("clk_p", Pins("K6")),
+        Subsignal("clk_n", Pins("K5")),
+        Subsignal("rx_p",  Pins("J4 L4 N4 R4")),
+        Subsignal("rx_n",  Pins("J3 L3 N3 R3")),
+        Subsignal("tx_p",  Pins("H2 K2 M2 P2")),
+        Subsignal("tx_n",  Pins("H1 K1 M1 P1"))
+    ),
+
+    # HDMI Out.
+
+    # TODO.
+
+    # HDMI In.
+
+    # TODO.
+]
+
+# Platform -----------------------------------------------------------------------------------------
+
+class Platform(XilinxPlatform):
+    def __init__(self):
+        XilinxPlatform.__init__(self, "xc7k70t-fbg676-1", _io, toolchain="vivado")
+
+    def create_programmer(self):
+        return OpenOCD("openocd_xc7_ft232.cfg", "bscan_spi_xc7a70t.bit")
+
+    def do_finalize(self, fragment):
+        XilinxPlatform.do_finalize(self, fragment)

litex_boards/targets/decklink_intensity_pro_4k.py

+#!/usr/bin/env python3
+
+#
+# This file is part of LiteX-Boards.
+#
+# Copyright (c) 2021 Florent Kermarrec <florent@enjoy-digital.fr>
+# SPDX-License-Identifier: BSD-2-Clause
+
+import os
+import argparse
+
+from migen import *
+
+from litex_boards.platforms import intensity_pro_4k
+from litex.build.xilinx.vivado import vivado_build_args, vivado_build_argdict
+
+from litex.soc.cores.clock import *
+from litex.soc.integration.soc import SoCRegion
+from litex.soc.integration.soc_core import *
+from litex.soc.integration.builder import *
+
+from litepcie.phy.s7pciephy import S7PCIEPHY
+from litepcie.software import generate_litepcie_software
+
+# CRG ----------------------------------------------------------------------------------------------
+
+class _CRG(Module):
+    def __init__(self, platform, sys_clk_freq):
+        self.clock_domains.cd_sys = ClockDomain()
+
+        # # #
+
+        self.submodules.pll = pll = S7PLL(speedgrade=-1)
+        self.comb += pll.reset.eq(ResetSignal("pcie"))
+        pll.register_clkin(ClockSignal("pcie"), 125e6)
+        pll.create_clkout(self.cd_sys, sys_clk_freq)
+        platform.add_false_path_constraints(self.cd_sys.clk, pll.clkin) # Ignore sys_clk to pll.clkin path created by SoC's rst.
+
+# BaseSoC ------------------------------------------------------------------------------------------
+
+class BaseSoC(SoCCore):
+    def __init__(self, sys_clk_freq=int(125e6), with_pcie=False, **kwargs):
+        platform = intensity_pro_4k.Platform()
+
+        # SoCCore ----------------------------------------------------------------------------------
+        kwargs["uart_name"] = "crossover"
+        SoCCore.__init__(self, platform, sys_clk_freq,
+            ident          = "LiteX SoC on Blackmagic Decklink Intensity Pro 4K",
+            ident_version  = True,
+            **kwargs)
+
+        # CRG --------------------------------------------------------------------------------------
+        self.submodules.crg = _CRG(platform, sys_clk_freq)
+
+        # PCIe -------------------------------------------------------------------------------------
+        if with_pcie:
+            self.submodules.pcie_phy = S7PCIEPHY(platform, platform.request("pcie_x4"),
+                data_width = 128,
+                bar0_size  = 0x20000)
+            self.add_pcie(phy=self.pcie_phy, ndmas=1)
+
+# Build --------------------------------------------------------------------------------------------
+
+def main():
+    parser = argparse.ArgumentParser(description="LiteX SoC Blackmagic Decklink Intensity Pro 4K.")
+    parser.add_argument("--build",        action="store_true", help="Build bitstream")
+    parser.add_argument("--load",         action="store_true", help="Load bitstream")
+    parser.add_argument("--sys-clk-freq", default=125e6,       help="System clock frequency (default: 125MHz)")
+    parser.add_argument("--with-pcie",    action="store_true", help="Enable PCIe support")
+    parser.add_argument("--driver",       action="store_true", help="Generate PCIe driver")
+    builder_args(parser)
+    soc_core_args(parser)
+    vivado_build_args(parser)
+    args = parser.parse_args()
+
+    soc = BaseSoC(
+        sys_clk_freq = int(float(args.sys_clk_freq)),
+        with_pcie    = args.with_pcie,
+        **soc_core_argdict(args)
+    )
+    builder = Builder(soc, **builder_argdict(args))
+    builder_kwargs = vivado_build_argdict(args)
+    builder.build(**builder_kwargs, run=args.build)
+
+    if args.driver:
+        generate_litepcie_software(soc, os.path.join(builder.output_dir, "driver"))
+
+    if args.load:
+        prog = soc.platform.create_programmer()
+        prog.load_bitstream(os.path.join(builder.gateware_dir, soc.build_name + ".bit"))
+
+if __name__ == "__main__":
+    main()