From 65ef1930f568c6f2008baecc2dec60f26679eef0 Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 23 Jun 2023 12:51:15 +0200
Subject: [PATCH] liteeth_gen: Add refclk_freq parameter for SGMII/1000BaseX.

---
 examples/udp_usp_gth_sgmii.yml | 13 +++++++------
 liteeth/gen.py                 |  7 ++++---
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/examples/udp_usp_gth_sgmii.yml b/examples/udp_usp_gth_sgmii.yml
index d35220b..4dbb403 100644
--- a/examples/udp_usp_gth_sgmii.yml
+++ b/examples/udp_usp_gth_sgmii.yml
@@ -5,14 +5,15 @@
 # SPDX-License-Identifier: BSD-2-Clause
 
 # PHY ----------------------------------------------------------------------
-phy:          USP_GTH_1000BASEX
-vendor:       xilinx
-toolchain:    vivado
+phy       : USP_GTH_1000BASEX
+vendor    : xilinx
+toolchain : vivado
 
 # Core ---------------------------------------------------------------------
-clk_freq:    125e6
-core:        udp
-data_width:  32
+refclk_freq : 156.25e6
+clk_freq    : 25e6
+core        : udp
+data_width  : 32
 
 # UDP Ports --------------------------------------------------------------------
 udp_ports:   {
diff --git a/liteeth/gen.py b/liteeth/gen.py
index 8c5f692..f90a416 100755
--- a/liteeth/gen.py
+++ b/liteeth/gen.py
@@ -134,7 +134,7 @@ _io = [
 
     # SGMII PHY Pads
     ("sgmii", 0,
-        Subsignal("refclk200", Pins(1)),
+        Subsignal("refclk", Pins(1)),
         Subsignal("txp",    Pins(1)),
         Subsignal("txn",    Pins(1)),
         Subsignal("rxp",    Pins(1)),
@@ -241,9 +241,10 @@ class PHYCore(SoCMini):
         ]:
             ethphy_pads = platform.request("sgmii")
             ethphy = phy(
-                refclk_or_clk_pads = ethphy_pads.refclk200,
+                refclk_or_clk_pads = ethphy_pads.refclk,
                 data_pads          = ethphy_pads,
                 sys_clk_freq       = self.clk_freq,
+                refclk_freq        = core_config.get("refclk_freq", 200e6),
                 with_csr           = False,
                 rx_polarity        = 0, # Add support to liteeth_gen if useful.
                 tx_polarity        = 0, # Add support to liteeth_gen if useful.
@@ -438,7 +439,7 @@ def main():
                 core_config[k] = replaces[r]
         if k == "phy":
             core_config[k] = getattr(liteeth_phys, core_config[k])
-        if k in ["clk_freq"]:
+        if k in ["refclk_freq", "clk_freq"]:
             core_config[k] = int(float(core_config[k]))
         if k in ["phy_tx_delay", "phy_rx_delay"]:
             core_config[k] = float(core_config[k])