From 6f0cd561093b89a1ac9ffbb7c622fee420a66c8a Mon Sep 17 00:00:00 2001
From: Liana Koleva <43767763+lianakoleva@users.noreply.github.com>
Date: Thu, 28 Sep 2023 11:11:21 +0200
Subject: [PATCH] update to match zcu102 constraint spec

---
 litex_boards/platforms/xilinx_zcu102.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/litex_boards/platforms/xilinx_zcu102.py b/litex_boards/platforms/xilinx_zcu102.py
index 8e7aa70..5d8ba62 100644
--- a/litex_boards/platforms/xilinx_zcu102.py
+++ b/litex_boards/platforms/xilinx_zcu102.py
@@ -54,9 +54,9 @@ _io = [
     ("serial", 0,
         Subsignal("cts", Pins("E12")),
         Subsignal("rts", Pins("D12")),
-        Subsignal("tx",  Pins("E13")),
-        Subsignal("rx",  Pins("F13")),
-        IOStandard("LVCMOS18")
+        Subsignal("rx",  Pins("E13")),
+        Subsignal("tx",  Pins("F13")),
+        IOStandard("LVCMOS33")
     ),
 
     # I2C