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phy/usp_gth/gty_1000basex: Add refclk_from_fabric parameter to allow selecting GTGREFCLK or GTREFCLK0.

This commit is contained in:
Florent Kermarrec 2024-11-25 09:21:17 +01:00
parent 17f80af672
commit 99d4073c6a
3 changed files with 7 additions and 6 deletions
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1
liteeth/gen.py
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@ -362,6 +362,7 @@ class PHYCore(SoCMini):
# Clocking.
refclk_or_clk_pads = ethphy_pads.refclk,
refclk_freq = core_config.get("refclk_freq", 200e6),
refclk_from_fabric = core_config.get("refclk_from_fabric", True),
# TX.
tx_polarity = core_config.get("phy_tx_polarity", 0),
# RX.

6
liteeth/phy/usp_gth_1000basex.py
View File

@ -22,7 +22,7 @@ class USP_GTH_1000BASEX(LiteXModule):
linerate = 1.25e9
rx_clk_freq = 125e6
tx_clk_freq = 125e6
def __init__(self, refclk_or_clk_pads, data_pads, sys_clk_freq, refclk_freq=200e6, with_csr=True, rx_polarity=0, tx_polarity=0):
def __init__(self, refclk_or_clk_pads, data_pads, sys_clk_freq, refclk_freq=200e6, with_csr=True, rx_polarity=0, tx_polarity=0, refclk_from_fabric=False):
from liteiclink.serdes.gth4_ultrascale import GTHChannelPLL
assert refclk_freq in [200e6, 156.25e6]
self.pcs = pcs = PCS(lsb_first=True)
@ -579,12 +579,12 @@ class USP_GTH_1000BASEX(LiteXModule):
i_DRPWE = 0b0,
i_EYESCANRESET = 0b0,
i_EYESCANTRIGGER = 0b0,
i_GTGREFCLK = refclk,
i_GTGREFCLK = refclk if refclk_from_fabric else 0b0,
i_GTHRXN = data_pads.rxn,
i_GTHRXP = data_pads.rxp,
i_GTNORTHREFCLK0 = 0b0,
i_GTNORTHREFCLK1 = 0b0,
i_GTREFCLK0 = 0b0,
i_GTREFCLK0 = refclk if not refclk_from_fabric else 0b0,
i_GTREFCLK1 = 0b0,
i_GTRSVD = 0b0000000000000000,
i_GTRXRESET = rx_reset,

6
liteeth/phy/usp_gty_1000basex.py
View File

@ -22,7 +22,7 @@ class USP_GTY_1000BASEX(LiteXModule):
linerate = 1.25e9
rx_clk_freq = 125e6
tx_clk_freq = 125e6
def __init__(self, refclk_or_clk_pads, data_pads, sys_clk_freq, refclk_freq=200e6, with_csr=True, rx_polarity=0, tx_polarity=0):
def __init__(self, refclk_or_clk_pads, data_pads, sys_clk_freq, refclk_freq=200e6, with_csr=True, rx_polarity=0, tx_polarity=0, refclk_from_fabric=False):
from liteiclink.serdes.gty_ultrascale import GTYChannelPLL
assert refclk_freq in [200e6, 156.25e6]
self.pcs = pcs = PCS(lsb_first=True)
@ -599,10 +599,10 @@ class USP_GTY_1000BASEX(LiteXModule):
i_EYESCANRESET = 0b0,
i_EYESCANTRIGGER = 0b0,
i_FREQOS = 0b0,
i_GTGREFCLK = refclk,
i_GTGREFCLK = refclk if refclk_from_fabric else 0b0,
i_GTNORTHREFCLK0 = 0b0,
i_GTNORTHREFCLK1 = 0b0,
i_GTREFCLK0 = 0b0,
i_GTREFCLK0 = refclk if not refclk_from_fabric else 0b0,
i_GTREFCLK1 = 0b0,
i_GTRSVD = 0b0,
i_GTRXRESET = rx_reset,