From 6c408b0a885518a181d2cecc1204aac61c64ed52 Mon Sep 17 00:00:00 2001
From: Jean THOMAS <git0@pub.jeanthomas.me>
Date: Tue, 4 Aug 2020 15:48:24 +0200
Subject: [PATCH] Raise ValueError if the number of DQ pads is not a multiple
 of 8 (fixing #48)

---
 gram/phy/ecp5ddrphy.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gram/phy/ecp5ddrphy.py b/gram/phy/ecp5ddrphy.py
index bdd02dd..de4cbdd 100644
--- a/gram/phy/ecp5ddrphy.py
+++ b/gram/phy/ecp5ddrphy.py
@@ -85,7 +85,8 @@ class ECP5DDRPHY(Peripheral, Elaboratable):
         self._sys_clk_freq = sys_clk_freq
 
         databits = len(self.pads.dq.io)
-        assert databits % 8 == 0
+        if databits % 8 != 0:
+            raise ValueError("DQ pads should come in a multiple of 8")
 
         # CSR
         bank = self.csr_bank()
-- 
2.30.2