163 lines
4.7 KiB
Python
163 lines
4.7 KiB
Python
#
|
|
# This file is part of LiteX-Boards.
|
|
#
|
|
# Copright (c) 2022 Lone Dynamics Corporation <info@lonedynamics.com>
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause
|
|
|
|
from litex.build.generic_platform import *
|
|
from litex.build.lattice import LatticeECP5Platform
|
|
from litex.build.openfpgaloader import OpenFPGALoader
|
|
|
|
# IOs ----------------------------------------------------------------------------------------------
|
|
|
|
_io_vx = [
|
|
|
|
# Clock
|
|
("clk48", 0, Pins("A7"), IOStandard("LVCMOS33")),
|
|
|
|
# Leds
|
|
("user_led", 0, Pins("B1"), IOStandard("LVCMOS33")),
|
|
("user_led", 1, Pins("C1"), IOStandard("LVCMOS33")),
|
|
("user_led", 2, Pins("D1"), IOStandard("LVCMOS33")),
|
|
("rgb_led", 0,
|
|
Subsignal("r", Pins("B1"), IOStandard("LVCMOS33")),
|
|
Subsignal("g", Pins("C1"), IOStandard("LVCMOS33")),
|
|
Subsignal("b", Pins("D1"), IOStandard("LVCMOS33")),
|
|
),
|
|
|
|
# SDRAM
|
|
("sdram_clock", 0, Pins("F16"), IOStandard("LVTTL33")),
|
|
("sdram", 0,
|
|
Subsignal("a", Pins(
|
|
"R14 M14 L14 L13 G12 G13 G14 G15",
|
|
"F12 F13 T15 F14 E14")),
|
|
Subsignal("ba", Pins("T14 T13")),
|
|
Subsignal("cs_n", Pins("G16")),
|
|
Subsignal("cke", Pins("F15")),
|
|
Subsignal("ras_n", Pins("J16")),
|
|
Subsignal("cas_n", Pins("K16")),
|
|
Subsignal("we_n", Pins("L15")),
|
|
Subsignal("dq", Pins(
|
|
"R15 R16 P16 P15 N16 N14 M16 M15",
|
|
"E15 D16 D14 C16 B16 C14 C15 B15")),
|
|
Subsignal("dm", Pins("L16 E16")),
|
|
IOStandard("LVTTL33")
|
|
),
|
|
|
|
# VGA
|
|
("vga", 0,
|
|
Subsignal("r", Pins("J3")),
|
|
Subsignal("g", Pins("K3")),
|
|
Subsignal("b", Pins("H2")),
|
|
Subsignal("hsync", Pins("J1")),
|
|
Subsignal("vsync", Pins("J2")),
|
|
IOStandard("LVCMOS33")
|
|
),
|
|
|
|
# Differential Data Multiple Interface
|
|
("ddmi", 0,
|
|
Subsignal("clk_p", Pins("R5"),
|
|
IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
|
|
Subsignal("data0_p", Pins("P4"),
|
|
IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
|
|
Subsignal("data1_p", Pins("P1"),
|
|
IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
|
|
Subsignal("data2_p", Pins("N1"),
|
|
IOStandard("LVCMOS33D"), Misc("DRIVE=4")),
|
|
),
|
|
|
|
# USB-C
|
|
("usb", 0,
|
|
Subsignal("d_p", Pins("T6")),
|
|
Subsignal("d_n", Pins("R6")),
|
|
Subsignal("pullup", Pins("R7")),
|
|
IOStandard("LVCMOS33")
|
|
),
|
|
|
|
# USB HOST
|
|
("usb_host", 0,
|
|
Subsignal("dp", Pins("F2")),
|
|
Subsignal("dm", Pins("E1")),
|
|
IOStandard("LVCMOS33")
|
|
),
|
|
|
|
# UART PMOD
|
|
("serial", 0,
|
|
Subsignal("tx", Pins("PMODA:1")),
|
|
Subsignal("rx", Pins("PMODA:2")),
|
|
IOStandard("LVCMOS33")
|
|
),
|
|
|
|
# SPI
|
|
("spiflash", 0,
|
|
Subsignal("cs_n", Pins("N8"), Misc("PULLMODE=UP")),
|
|
Subsignal("clk", Pins("N9")),
|
|
Subsignal("miso", Pins("T7"), Misc("PULLMODE=UP")),
|
|
Subsignal("mosi", Pins("T8"), Misc("PULLMODE=UP")),
|
|
Misc("SLEWRATE=SLOW"),
|
|
IOStandard("LVCMOS33"),
|
|
),
|
|
|
|
]
|
|
|
|
_io_v1 = [
|
|
|
|
# SD card w/ SPI interface
|
|
("spisdcard", 0,
|
|
Subsignal("clk", Pins("D6")),
|
|
Subsignal("mosi", Pins("C6")),
|
|
Subsignal("cs_n", Pins("B6")),
|
|
Subsignal("miso", Pins("E6")),
|
|
Misc("SLEWRATE=FAST"),
|
|
IOStandard("LVCMOS33"),
|
|
),
|
|
|
|
]
|
|
|
|
_io_v2 = [
|
|
|
|
# SD card w/ SD-mode interface
|
|
("sdcard", 0,
|
|
Subsignal("cd", Pins("A13")),
|
|
Subsignal("clk", Pins("D6")),
|
|
Subsignal("cmd", Pins("C6")),
|
|
Subsignal("data", Pins("E6 B13 B12 B6")),
|
|
Misc("SLEW=FAST"),
|
|
IOStandard("LVCMOS33")
|
|
),
|
|
]
|
|
|
|
# Connectors ---------------------------------------------------------------------------------------
|
|
|
|
_connectors_vx = [
|
|
("PMODA", "A2 A3 A4 A5 B3 B4 B5 A6"),
|
|
("PMODB", "A12 A11 B11 B10 A9 A10 B8 B9"),
|
|
]
|
|
|
|
# Platform -----------------------------------------------------------------------------------------
|
|
|
|
class Platform(LatticeECP5Platform):
|
|
default_clk_name = "clk48"
|
|
default_clk_period = 1e9/48e6
|
|
|
|
def __init__(self, revision="v1", device="45F", toolchain="trellis", **kwargs):
|
|
assert revision in ["v1", "v2"]
|
|
assert device in ["25F", "45F", "85F"]
|
|
self.revision = revision
|
|
|
|
io = _io_vx
|
|
connectors = _connectors_vx
|
|
|
|
if revision == "v1": io += _io_v1
|
|
if revision == "v2": io += _io_v2
|
|
|
|
LatticeECP5Platform.__init__(self, f"LFE5U-{device}-6BG256", io, connectors, toolchain=toolchain, **kwargs)
|
|
|
|
def create_programmer(self, cable):
|
|
return OpenFPGALoader(cable=cable)
|
|
|
|
def do_finalize(self, fragment):
|
|
LatticeECP5Platform.do_finalize(self, fragment)
|
|
self.add_period_constraint(self.lookup_request("clk48", loose=True), 1e9/48e6)
|