From f0f067fe7d4cdc56b97d66833f923dfe4cab4276 Mon Sep 17 00:00:00 2001
From: Florent Kermarrec <florent@enjoy-digital.fr>
Date: Fri, 27 Jul 2018 08:34:06 +0200
Subject: [PATCH] phy/s7ddrphy: add assert to make sure cmd/dat phases are not
 identical

---
 litedram/phy/s7ddrphy.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/litedram/phy/s7ddrphy.py b/litedram/phy/s7ddrphy.py
index abdc926..4e94587 100644
--- a/litedram/phy/s7ddrphy.py
+++ b/litedram/phy/s7ddrphy.py
@@ -61,6 +61,7 @@ def get_sys_phases(nphases, sys_latency, cas_latency, write=False):
             diff_phase = dat_phase - cmd_phase
         else:
             diff_phase = cmd_phase - dat_phase
+    assert cmd_phase != dat_phase
     return cmd_phase, dat_phase