diff --git a/ecp5/constids.inc b/ecp5/constids.inc
index 5e8fc7da..4b5e3a3a 100644
--- a/ecp5/constids.inc
+++ b/ecp5/constids.inc
@@ -1294,3 +1294,11 @@ X(P)
 X(ECLKBRIDGECS)
 X(SEL)
 X(ECSOUT)
+
+X(IOLOGIC_MODE_IDDRX1F)
+X(IOLOGIC_MODE_IDDRX2F)
+X(IOLOGIC_MODE_IREG)
+X(IOLOGIC_MODE_ODDRX1F)
+X(IOLOGIC_MODE_ODDRX2F)
+X(IOLOGIC_MODE_OREG)
+X(IOLOGIC_MODE_TSREG)
diff --git a/ecp5/trellis_import.py b/ecp5/trellis_import.py
index 549b3080..ee960fd3 100755
--- a/ecp5/trellis_import.py
+++ b/ecp5/trellis_import.py
@@ -186,6 +186,8 @@ def process_timing_data():
                     max_delay = min(entry["rising"][2], entry["falling"][2])
                     delays.append((constids[from_pin], constids[to_pin], min_delay, max_delay))
                 elif entry["type"] == "SetupHold":
+                    if type(entry["pin"]) is list:
+                        continue
                     pin = constids[entry["pin"]]
                     clock = constids[entry["clock"][1]]
                     min_setup = entry["setup"][0]