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efinix_trion_t120_bga576: Add Ethernet through RGMII PMOD and switch to it. 

See https://github.com/enjoy-digital/liteeth/issues/66#issuecomment-859366899 for the PMOD.
This commit is contained in:
Florent Kermarrec 2023-07-27 11:52:40 +02:00
parent c1088befe5
commit 2d3b81a532
1 changed files with 50 additions and 20 deletions
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70
litex_boards/targets/efinix_trion_t120_bga576_dev_kit.py
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@ -27,7 +27,7 @@ from liteeth.phy.trionrgmii import LiteEthPHYRGMII
class _CRG(LiteXModule):
def __init__(self, platform, sys_clk_freq):
self.rst = Signal()
#self.rst = Signal()
self.cd_sys = ClockDomain()
# # #
@ -38,7 +38,8 @@ class _CRG(LiteXModule):
# PLL
self.pll = pll = TRIONPLL(platform)
self.comb += pll.reset.eq(~rst_n | self.rst)
#self.comb += pll.reset.eq(~rst_n | self.rst)
self.comb += pll.reset.eq(~rst_n)
pll.register_clkin(clk40, 40e6)
pll.create_clkout(self.cd_sys, sys_clk_freq, with_reset=True, name="axi_clk")
@ -50,6 +51,7 @@ class BaseSoC(SoCCore):
with_ethernet = False,
with_etherbone = False,
eth_phy = 0,
eth_rmii_pmod = True,
eth_ip = "192.168.1.50",
with_led_chaser = True,
**kwargs):
@ -90,23 +92,51 @@ class BaseSoC(SoCCore):
# Ethernet / Etherbone ---------------------------------------------------------------------
if with_ethernet or with_etherbone:
self.ethphy = LiteEthPHYRGMII(
platform = platform,
clock_pads = platform.request("eth_clocks", eth_phy),
pads = platform.request("eth", eth_phy),
with_hw_init_reset = False)
# Use board's Ethernet PHYs.
if not eth_rmii_pmod:
self.ethphy = LiteEthPHYRGMII(
platform = platform,
clock_pads = platform.request("eth_clocks", eth_phy),
pads = platform.request("eth", eth_phy),
with_hw_init_reset = False)
# FIXME: Avoid this.
platform.toolchain.excluded_ios.append(platform.lookup_request("eth_clocks").tx)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth_clocks").rx)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth").tx_data)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth").rx_data)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth").mdio)
# Use Ethernet RMII PMOD.
else:
from litex.build.generic_platform import Pins, Subsignal, IOStandard
def eth_lan8720_rmii_pmod_io(pmod):
# Lan8020 RMII PHY "PMOD": To be used as a PMOD, MDIO should be disconnected and TX1 connected to PMOD8 IO.
return [
("eth_rmii_clocks", 0,
Subsignal("ref_clk", Pins(f"{pmod}:6")),
IOStandard("3.3_V_LVTTL_/_LVCMOS"),
),
("eth_rmii", 0,
Subsignal("rx_data", Pins(f"{pmod}:5 {pmod}:1")),
Subsignal("crs_dv", Pins(f"{pmod}:2")),
Subsignal("tx_en", Pins(f"{pmod}:4")),
Subsignal("tx_data", Pins(f"{pmod}:0 {pmod}:7")),
IOStandard("3.3_V_LVTTL_/_LVCMOS")
),
]
platform.add_extension(eth_lan8720_rmii_pmod_io("pmod_d"))
from liteeth.phy.rmii import LiteEthPHYRMII
self.ethphy = LiteEthPHYRMII(
clock_pads = platform.request("eth_rmii_clocks"),
pads = platform.request("eth_rmii"),
refclk_cd = None
)
if with_ethernet:
self.add_ethernet(phy=self.ethphy, software_debug=False)
if with_etherbone:
self.add_etherbone(phy=self.ethphy)
# FIXME: Avoid this.
platform.toolchain.excluded_ios.append(platform.lookup_request("eth_clocks").tx)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth_clocks").rx)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth").tx_data)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth").rx_data)
platform.toolchain.excluded_ios.append(platform.lookup_request("eth").mdio)
# LPDDR3 SDRAM -----------------------------------------------------------------------------
if not self.integrated_main_ram_size:
# DRAM / PLL Blocks.
@ -328,12 +358,12 @@ calc_result = design.auto_calc_pll_clock("dram_pll", {"CLKOUT0_FREQ": "400.0"})
self.submodules += axi.AXILite2AXI(axi_lite_port, axi_port)
self.bus.add_slave(f"target{n}", axi_lite_port, SoCRegion(origin=0x4000_0000 + 0x1000_0000*n, size=0x1000_0000)) # 256MB.
# Use DRAM's target0 port as Main Ram -----------------------------------------------------
self.bus.add_region("main_ram", SoCRegion(
origin = 0x4000_0000,
size = 0x1000_0000, # 256MB.
linker = True)
)
# Use DRAM's target0 port as Main Ram -----------------------------------------------------
self.bus.add_region("main_ram", SoCRegion(
origin = 0x4000_0000,
size = 0x1000_0000, # 256MB.
linker = True)
)
# Build --------------------------------------------------------------------------------------------