1 files changed, 26 insertions, 5 deletions

diff --git a/gowin/arch.cc b/gowin/arch.cc
index 8c908b04..33f25405 100644
--- a/gowin/arch.cc
+++ b/gowin/arch.cc
@@ -698,17 +698,28 @@ template <class T, class C> const T *genericLookup(const T *first, int len, cons
     }
 }
 
+template <class T, class C> const T *timingLookup(const T *first, int len, const T val, C compare)
+{
+    for (int i = 0; i < len; ++i) {
+        auto res = &first[i];
+        if (!(compare(*res, val) || compare(val, *res))) {
+            return res;
+        }
+    }
+    return nullptr;
+}
+
 DelayQuad delayLookup(const TimingPOD *first, int len, IdString name)
 {
     TimingPOD needle;
     needle.name_id = name.index;
-    const TimingPOD *timing = genericLookup(first, len, needle, timingCompare);
+    const TimingPOD *timing = timingLookup(first, len, needle, timingCompare);
     DelayQuad delay;
     if (timing != nullptr) {
-        delay.fall.max_delay = std::max(timing->ff, timing->rf) / 1000;
-        delay.fall.min_delay = std::min(timing->ff, timing->rf) / 1000;
-        delay.rise.max_delay = std::max(timing->rr, timing->fr) / 1000;
-        delay.rise.min_delay = std::min(timing->rr, timing->fr) / 1000;
+        delay.fall.max_delay = std::max(timing->ff, timing->rf) / 1000.;
+        delay.fall.min_delay = std::min(timing->ff, timing->rf) / 1000.;
+        delay.rise.max_delay = std::max(timing->rr, timing->fr) / 1000.;
+        delay.rise.min_delay = std::min(timing->rr, timing->fr) / 1000.;
     } else {
         delay = DelayQuad(0);
     }
@@ -2005,6 +2016,16 @@ static bool is_PLL_T_FB_iob(const Context *ctx, const CellInfo *cell)
     return is_spec_iob(ctx, cell, ctx->id("RPLL_T_FB"));
 }
 
+bool Arch::is_GCLKT_iob(const CellInfo *cell)
+{
+    for (int i = 0; i < 6; ++i) {
+        if (is_spec_iob(getCtx(), cell, idf("GCLKT_%d", i))) {
+            return true;
+        }
+    }
+    return false;
+}
+
 // If the PLL input can be connected using a direct wire, then do so,
 // bypassing conventional routing.
 void Arch::fix_pll_nets(Context *ctx)