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phy/trionrgmii: Update from titaniumrgmii (untested).

This commit is contained in:
Florent Kermarrec 2023-09-07 14:24:04 +02:00
parent 3a617034dc
commit 44f739afe2
1 changed files with 38 additions and 38 deletions
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76
liteeth/phy/trionrgmii.py
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@ -22,7 +22,7 @@ from liteeth.phy.common import *
# LiteEth PHY RGMII TX ----------------------------------------------------------------------------- # LiteEth PHY RGMII TX -----------------------------------------------------------------------------
class LiteEthPHYRGMIITX(LiteXModule): class LiteEthPHYRGMIITX(LiteXModule):
def __init__(self, platform, pads, ddr_tx_ctl=False): def __init__(self, platform, pads):
self.sink = sink = stream.Endpoint(eth_phy_description(8)) self.sink = sink = stream.Endpoint(eth_phy_description(8))
# # # # # #
@ -36,31 +36,27 @@ class LiteEthPHYRGMIITX(LiteXModule):
i1 = tx_data_h[n], i1 = tx_data_h[n],
i2 = tx_data_l[n], i2 = tx_data_l[n],
o = pads.tx_data[n], o = pads.tx_data[n],
clk = "auto_eth_tx_clk", # FIXME. clk = "auto_eth_tx_clk", # FIXME: Use Clk Signal.
) )
# TX Ctl IOs. # TX Ctl IOs.
# ----------- # -----------
if ddr_tx_ctl: tx_ctl_h = Signal()
tx_ctl_h = Signal() tx_ctl_l = Signal()
tx_ctl_l = Signal() self.specials += DDROutput(
self.specials += DDROutput( i1 = tx_ctl_h,
i1 = tx_ctl_h, i2 = tx_ctl_l,
i2 = tx_ctl_l, o = pads.tx_ctl,
o = pads.tx_ctl, clk = "auto_eth_tx_clk", # FIXME: Use Clk Signal.
clk = "auto_eth_tx_clk", # FIXME. )
)
else:
self.sync.eth_tx += pads.tx_ctl.eq(sink.valid)
# Logic. # Logic.
# ------ # ------
self.comb += sink.ready.eq(1) self.comb += sink.ready.eq(1)
if ddr_tx_ctl: self.sync += [
self.sync += [ tx_ctl_h.eq(sink.valid),
tx_ctl_h.eq(sink.valid), tx_ctl_l.eq(sink.valid),
tx_ctl_l.eq(sink.valid), ]
]
for n in range(4): for n in range(4):
self.sync += [ self.sync += [
tx_data_h[n].eq(sink.data[n + 0]), tx_data_h[n].eq(sink.data[n + 0]),
@ -84,25 +80,36 @@ class LiteEthPHYRGMIIRX(LiteXModule):
i = pads.rx_data[n], i = pads.rx_data[n],
o1 = rx_data_h[n], o1 = rx_data_h[n],
o2 = rx_data_l[n], o2 = rx_data_l[n],
clk = "auto_eth_rx_clk", # FIXME. clk = "auto_eth_rx_clk", # FIXME: Use Clk Signal.
) )
# RX Ctl IOs. # RX Ctl IOs.
# ----------- # -----------
rx_ctl_h = Signal()
rx_ctl_l = Signal()
self.specials += DDRInput(
i = pads.rx_ctl,
o1 = rx_ctl_h,
o2 = rx_ctl_l,
clk = "auto_eth_rx_clk", # FIXME: Use Clk Signal.
)
rx_ctl = rx_ctl_h
rx_ctl_d = Signal() rx_ctl_d = Signal()
self.sync += rx_ctl_d.eq(pads.rx_ctl) self.sync += rx_ctl_d.eq(rx_ctl)
# Logic. # Logic.
# ------ # ------
last = Signal() last = Signal()
rx_data = Signal(8) rx_data_lsb = Signal(4)
rx_data_msb = Signal(4)
for n in range(4): for n in range(4):
self.comb += rx_data[n + 0].eq(rx_data_l[n]) self.comb += rx_data_msb[n + 0].eq(rx_data_l[n])
self.comb += rx_data[n + 4].eq(rx_data_h[n]) self.sync += rx_data_lsb[n + 0].eq(rx_data_h[n])
self.comb += last.eq(~pads.rx_ctl & rx_ctl_d)
self.sync += [ self.sync += [
last.eq(~rx_ctl & rx_ctl_d),
source.valid.eq(rx_ctl_d), source.valid.eq(rx_ctl_d),
source.data.eq(rx_data), source.data.eq(Cat(rx_data_lsb, rx_data_msb)),
] ]
self.comb += source.last.eq(last) self.comb += source.last.eq(last)
@ -121,7 +128,7 @@ class LiteEthPHYRGMIICRG(LiteXModule):
# RX Clk. # RX Clk.
# ------- # -------
eth_rx_clk = platform.add_iface_io("auto_eth_rx_clk") eth_rx_clk = platform.add_iface_io("auto_eth_rx_clk_in")
block = { block = {
"type" : "GPIO", "type" : "GPIO",
"size" : 1, "size" : 1,
@ -132,10 +139,6 @@ class LiteEthPHYRGMIICRG(LiteXModule):
} }
platform.toolchain.ifacewriter.blocks.append(block) platform.toolchain.ifacewriter.blocks.append(block)
platform.toolchain.excluded_ios.append(clock_pads.rx) platform.toolchain.excluded_ios.append(clock_pads.rx)
self.comb += self.cd_eth_rx.clk.eq(eth_rx_clk)
cmd = "create_clock -period {} auto_eth_rx_clk".format(1e9/125e6)
platform.toolchain.additional_sdc_commands.append(cmd)
# TX Clk. # TX Clk.
# ------- # -------
@ -153,12 +156,10 @@ class LiteEthPHYRGMIICRG(LiteXModule):
# TX PLL. # TX PLL.
# ------- # -------
self.pll = pll = TRIONPLL(platform, n=1) # FIXME: Add Auto-Numbering. self.pll = pll = TRIONPLL(platform, n=1) # FIXME: Add Auto-Numbering.
pll.register_clkin(None, freq=125e6, name="auto_eth_rx_clk") pll.register_clkin(None, freq=125e6, name="auto_eth_rx_clk_in")
pll.create_clkout(None, freq=125e6, name="auto_eth_tx_clk") pll.create_clkout(self.cd_eth_rx, freq=125e6, phase=0, name="auto_eth_rx_clk", with_reset=False)
pll.create_clkout(self.cd_eth_tx, freq=125e6, phase=0, name="auto_eth_tx_clk_delayed", with_reset=False) pll.create_clkout(self.cd_eth_tx, freq=125e6, phase=0, name="auto_eth_tx_clk", with_reset=False)
pll.create_clkout(None, freq=125e6, phase=90, name="auto_eth_tx_clk_delayed")
cmd = "create_clock -period {} eth_tx_clk".format(1e9/125e6)
platform.toolchain.additional_sdc_commands.append(cmd)
# Reset. # Reset.
# ------ # ------
@ -181,8 +182,7 @@ class LiteEthPHYRGMII(LiteXModule):
dw = 8 dw = 8
tx_clk_freq = 125e6 tx_clk_freq = 125e6
rx_clk_freq = 125e6 rx_clk_freq = 125e6
def __init__(self, platform, clock_pads, pads, with_hw_init_reset=True, def __init__(self, platform, clock_pads, pads, with_hw_init_reset=True, hw_reset_cycles=256):
iodelay_clk_freq=200e6, hw_reset_cycles=256):
self.crg = LiteEthPHYRGMIICRG(platform, clock_pads, with_hw_init_reset, hw_reset_cycles) self.crg = LiteEthPHYRGMIICRG(platform, clock_pads, with_hw_init_reset, hw_reset_cycles)
self.tx = ClockDomainsRenamer("eth_tx")(LiteEthPHYRGMIITX(platform, pads)) self.tx = ClockDomainsRenamer("eth_tx")(LiteEthPHYRGMIITX(platform, pads))
self.rx = ClockDomainsRenamer("eth_rx")(LiteEthPHYRGMIIRX(platform, pads)) self.rx = ClockDomainsRenamer("eth_rx")(LiteEthPHYRGMIIRX(platform, pads))