Skip to content

Commit

Permalink
efinix_ti375_c529_dev_kit now support vexii ethernet
Browse files Browse the repository at this point in the history
  • Loading branch information
@Dolu1990
Dolu1990 committed Nov 1, 2024
1 parent 22ac6cb commit 4c61bac
Show file tree
Hide file tree
Showing 2 changed files with 116 additions and 21 deletions.
29 changes: 27 additions & 2 deletions litex_boards/platforms/efinix_ti375_c529_dev_kit.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -11,9 +11,10 @@
# IOs ----------------------------------------------------------------------------------------------

_io = [
# Clk.
# Clk
("clk25", 0, Pins("L17"), IOStandard("1.8_V_LVCMOS")),
("clk100", 0, Pins("U4"), IOStandard("3.3_V_LVCMOS")),
("clk100", 0, Pins("U4"), IOStandard("3.3_V_LVCMOS")),
("clketh", 0, Pins("A14"), IOStandard("1.8_V_LVCMOS")),

# Serial.
("serial", 0,
Expand Down Expand Up @@ -44,10 +45,34 @@
IOStandard("3.3_V_LVTTL"),
),

# ETH.
("eth_clocks", 0,
Subsignal("tx", Pins("C17")),
Subsignal("rx", Pins("D15")),
IOStandard("1.8_V_LVCMOS"),
Misc("SLEWRATE=1"),
Misc("DRIVE_STRENGTH=16")
),
("eth", 0,
Subsignal("rst_n", Pins("D10"), IOStandard("3.3_V_LVCMOS")),
Subsignal("int_n", Pins("B11"), IOStandard("3.3_V_LVCMOS")),
Subsignal("mdio", Pins("B14")),
Subsignal("mdc", Pins("B19")),
Subsignal("rx_ctl", Pins("H18")),
Subsignal("rx_data", Pins("A18 A19 D16 D17")),
Subsignal("tx_ctl", Pins("B20")),
Subsignal("tx_data", Pins("B17 A16 A17 C19")),
IOStandard("1.8_V_LVCMOS"),
Misc("SLEWRATE=1"),
Misc("DRIVE_STRENGTH=16")
),

# FAN.
("fan_speed_control", 0, Pins("T19"), IOStandard("3.3_V_LVCMOS")),
]



# Bank voltage ---------------------------------------------------------------------------------------

_bank_info = [
Expand Down
108 changes: 89 additions & 19 deletions litex_boards/targets/efinix_ti375_c529_dev_kit.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,7 @@

from litex.gen import *

from litex.build.io import DDROutput, SDROutput, SDRTristate
from litex.build.io import DDROutput, DDRInput, SDROutput, SDRTristate
from litex.build.generic_platform import Subsignal, Pins, Misc, IOStandard

from litex_boards.platforms import efinix_ti375_c529_dev_kit
Expand All @@ -26,6 +26,9 @@
from litex.soc.cores.led import LedChaser
from litex.soc.cores.bitbang import I2CMaster
from litex.soc.cores.pwm import PWM

from liteeth.phy.trionrgmii import LiteEthPHYRGMII
from litex.build.generic_platform import Subsignal, Pins, Misc, IOStandard
from litex.soc.cores.usb_ohci import USBOHCI

from liteeth.phy.trionrgmii import LiteEthPHYRGMII
Expand All @@ -40,15 +43,19 @@
class _CRG(LiteXModule):
def __init__(self, platform, sys_clk_freq, cpu_clk_freq):
#self.rst = Signal()
self.cd_sys = ClockDomain()
self.cd_usb = ClockDomain()
self.cd_video = ClockDomain()
self.cd_cpu = ClockDomain()
self.cd_sys = ClockDomain()
self.cd_usb = ClockDomain()
self.cd_video = ClockDomain()
self.cd_cpu = ClockDomain()
self.cd_eth = ClockDomain()
self.cd_eth_90 = ClockDomain()
self.cd_eth_rx = ClockDomain()

# # #

# Clk/Rst.
clk100 = platform.request("clk100")
clk25 = platform.request("clk25")
rst_n = platform.request("user_btn", 0)

# PLL.
Expand All @@ -63,11 +70,34 @@ def __init__(self, platform, sys_clk_freq, cpu_clk_freq):
pll.create_clkout(self.cd_usb, 60e6, margin=0)
pll.create_clkout(None, 800e6) # LPDDR4 ctrl
pll.create_clkout(self.cd_video, 40e6)

# PLL eth tx
self.pll2 = pll2 = TITANIUMPLL(platform)
self.comb += pll2.reset.eq(~rst_n)
pll2.register_clkin(clk25, 25e6)
# You can use CLKOUT0 only for clocks with a maximum frequency of 4x
# (integer) of the reference clock. If all your system clocks do not fall within
# this range, you should dedicate one unused clock for CLKOUT0.
pll2.create_clkout(None, 25e6, with_reset=True)
pll2.create_clkout(self.cd_eth, 125e6)
pll2.create_clkout(self.cd_eth_90, 125e6, phase=90)

# PLL eth rx
self.pll3 = pll3 = TITANIUMPLL(platform)
self.comb += pll3.reset.eq(~rst_n)
self.eth_clocks = eth_clocks = platform.request("eth_clocks")
pll3.register_clkin(eth_clocks.rx, 125e6)
# You can use CLKOUT0 only for clocks with a maximum frequency of 4x
# (integer) of the reference clock. If all your system clocks do not fall within
# this range, you should dedicate one unused clock for CLKOUT0.
pll3.create_clkout(None, 125e6, with_reset=True)
pll3.create_clkout(self.cd_eth_rx, 125e6,phase =270)

platform.add_false_path_constraints(self.cd_cpu.clk, self.cd_usb.clk)
platform.add_false_path_constraints(self.cd_cpu.clk, self.cd_sys.clk)
platform.add_false_path_constraints(self.cd_cpu.clk, self.cd_video.clk)
platform.add_false_path_constraints(self.cd_sys.clk, self.cd_usb.clk)

platform.add_false_path_constraints(self.cd_sys.clk, self.cd_eth.clk)

# BaseSoC ------------------------------------------------------------------------------------------

Expand Down Expand Up @@ -206,19 +236,59 @@ def __init__(self, sys_clk_freq=100e6, cpu_clk_freq=100e6, with_ohci=False, **kw
self.specials += SDRTristate(io=video_sync.vsync, o=Signal(reset=0b0), oe=self.cpu.video_vsync, i=Signal(), clk=clk_video)
self.specials += SDRTristate(io=video_sync.hsync, o=Signal(reset=0b0), oe=self.cpu.video_hsync, i=Signal(), clk=clk_video)

# _debug_io = [
# ("debug_io", 0,
# Subsignal("p0", Pins("pmod2:0")),
# Subsignal("p1", Pins("pmod2:1")),
# Subsignal("p2", Pins("pmod2:2")),
# Subsignal("p3", Pins("pmod2:3")),
# Subsignal("p4", Pins("pmod2:4")),
# Subsignal("p5", Pins("pmod2:5")),
# Subsignal("p6", Pins("pmod2:6")),
# Subsignal("p7", Pins("pmod2:7")),
# IOStandard("3.3_V_LVCMOS"),
# )
# ]
# Debug pins -----------------------------------------------------------------------------
if hasattr(self.cpu, "tracer_payload"):
_debug_io = [
("debug_io", 0,
Subsignal("p0", Pins("pmod2:0")),
Subsignal("p1", Pins("pmod2:1")),
Subsignal("p2", Pins("pmod2:2")),
Subsignal("p3", Pins("pmod2:3")),
Subsignal("p4", Pins("pmod2:4")),
Subsignal("p5", Pins("pmod2:5")),
Subsignal("p6", Pins("pmod2:6")),
Subsignal("p7", Pins("pmod2:7")),
IOStandard("3.3_V_LVCMOS"),
Misc("SLEWRATE=1"), Misc("DRIVE_STRENGTH=8")
)
]

self.platform.add_extension(_debug_io)
debug_io = platform.request("debug_io")

self.comb += debug_io.p0.eq(self.cpu.tracer_payload[0])
self.comb += debug_io.p1.eq(self.cpu.tracer_payload[1])
self.comb += debug_io.p2.eq(self.cpu.tracer_payload[2])
self.comb += debug_io.p3.eq(self.cpu.tracer_payload[3])
self.comb += debug_io.p4.eq(self.cpu.tracer_payload[4])
self.comb += debug_io.p5.eq(self.cpu.tracer_payload[5])
self.comb += debug_io.p6.eq(self.cpu.tracer_payload[6])
self.comb += debug_io.p7.eq(self.cpu.tracer_payload[7])

# CPU-ETH -----------------------------------------------------------------------------
if hasattr(self.cpu, "eth_tx_ref_clk"):
eth = platform.request("eth")
eth_clocks = self.crg.eth_clocks
# eth_clocks = platform.request("eth_clocks")

self.comb += self.cpu.eth_tx_ref_clk .eq(self.crg.cd_eth.clk)
self.specials += DDROutput(i1=self.cpu.eth_tx_clk[0], i2=self.cpu.eth_tx_clk[1], o=eth_clocks.tx, clk=self.crg.cd_eth_90.clk)
self.specials += DDROutput(i1=self.cpu.eth_tx_ctl[0], i2=self.cpu.eth_tx_ctl[1], o=eth.tx_ctl, clk=self.crg.cd_eth.clk)
for i in range(4):
self.specials += DDROutput(i1=self.cpu.eth_tx_d[0+i], i2=self.cpu.eth_tx_d[4+i], o=eth.tx_data[i], clk=self.crg.cd_eth.clk)

# Rx using pll
self.comb += self.cpu.eth_rx_clk .eq(self.crg.cd_eth_rx.clk)
self.specials += DDRInput(o1=self.cpu.eth_rx_ctl[0], o2=self.cpu.eth_rx_ctl[1], i=eth.rx_ctl, clk=self.crg.cd_eth_rx.clk)
for i in range(4):
self.specials += DDRInput(o1=self.cpu.eth_rx_d[0+i], o2=self.cpu.eth_rx_d[4+i], i=eth.rx_data[i], clk=self.crg.cd_eth_rx.clk)

# self.specials += DDROutput(i1=self.cpu.eth_rx_d[0], i2=self.cpu.eth_rx_d[4], o=debug_io.p0, clk=self.crg.cd_eth_rx.clk)
# self.specials += DDROutput(i1=self.cpu.eth_rx_d[1], i2=self.cpu.eth_rx_d[5], o=debug_io.p1, clk=self.crg.cd_eth_rx.clk)
# self.specials += DDROutput(i1=self.cpu.eth_rx_d[2], i2=self.cpu.eth_rx_d[6], o=debug_io.p2, clk=self.crg.cd_eth_rx.clk)
# self.specials += DDROutput(i1=self.cpu.eth_rx_d[3], i2=self.cpu.eth_rx_d[7], o=debug_io.p3, clk=self.crg.cd_eth_rx.clk)
# self.specials += DDROutput(i1=Signal(reset=1), i2=Signal(reset=0), o=debug_io.p4, clk=self.crg.cd_eth_rx.clk)
# self.specials += DDROutput(i1=self.cpu.eth_rx_ctl[0], i2=self.cpu.eth_rx_ctl[1], o=debug_io.p5, clk=self.crg.cd_eth_rx.clk)


# LPDDR4 SDRAM -----------------------------------------------------------------------------
Expand Down

0 comments on commit 4c61bac

Please sign in to comment.