From ee4d0da13e6a648d2793198a90eeecd0e548439d Mon Sep 17 00:00:00 2001
From: Alex Forencich <alex@alexforencich.com>
Date: Mon, 24 Mar 2025 00:04:36 -0700
Subject: [PATCH] example/VCU118: Clarify MDIO prescaler setting

Signed-off-by: Alex Forencich <alex@alexforencich.com>
---
 example/VCU118/fpga/rtl/fpga_core.sv | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/example/VCU118/fpga/rtl/fpga_core.sv b/example/VCU118/fpga/rtl/fpga_core.sv
index 410859d..0becb49 100644
--- a/example/VCU118/fpga/rtl/fpga_core.sv
+++ b/example/VCU118/fpga/rtl/fpga_core.sv
@@ -372,7 +372,8 @@ mdio_master_inst (
 
     .busy(),
 
-    .prescale(8'd3)
+    // The TI DP83867IS PHY chip supports an MDC frequency of 25 MHz
+    .prescale(8'(125/25/2))
 );
 
 // QSFP28