diff --git a/plugins/hawkeye/include/hawkeye/candidate_search.h b/plugins/hawkeye/include/hawkeye/candidate_search.h
index 54cff75d96f..acc2a60c041 100644
--- a/plugins/hawkeye/include/hawkeye/candidate_search.h
+++ b/plugins/hawkeye/include/hawkeye/candidate_search.h
@@ -51,6 +51,8 @@ namespace hal
                 CHECK_SCC
             } components = Components::NONE;
 
+            std::vector<std::vector<std::string>> equivalent_types = {};
+
             u32 timeout           = 10;
             u32 min_register_size = 10;
         };
diff --git a/plugins/hawkeye/python/python_bindings.cpp b/plugins/hawkeye/python/python_bindings.cpp
index cd0503999f4..66579f30e84 100644
--- a/plugins/hawkeye/python/python_bindings.cpp
+++ b/plugins/hawkeye/python/python_bindings.cpp
@@ -255,7 +255,7 @@ namespace hal
             :type: hawkeye.DetectionConfiguration.Control
         )");
 
-        py::enum_<hawkeye::DetectionConfiguration::Components> py_hawkeye_detection_configuration_components(py_hawkeye_detection_configuration, "Components", R"(TODO)");
+                py::enum_<hawkeye::DetectionConfiguration::Components> py_hawkeye_detection_configuration_components(py_hawkeye_detection_configuration, "Components", R"(TODO)");
 
         py_hawkeye_detection_configuration_components.value("NONE", hawkeye::DetectionConfiguration::Components::NONE, R"(TODO)")
             .value("CHECK_SCC", hawkeye::DetectionConfiguration::Components::CHECK_SCC, R"(TODO)")
@@ -267,6 +267,12 @@ namespace hal
             :type: hawkeye.DetectionConfiguration.Components
         )");
 
+        py_hawkeye_detection_configuration.def_readwrite("equivalent_types", &hawkeye::DetectionConfiguration::equivalent_types, R"(
+            TODO
+
+            :type: list[list[str]]
+        )");
+
         py_hawkeye_detection_configuration.def_readwrite("timeout", &hawkeye::DetectionConfiguration::timeout, R"(
             TODO
             
diff --git a/plugins/hawkeye/src/candidate_search.cpp b/plugins/hawkeye/src/candidate_search.cpp
index f5e452cdd5e..e22ce915a28 100644
--- a/plugins/hawkeye/src/candidate_search.cpp
+++ b/plugins/hawkeye/src/candidate_search.cpp
@@ -370,13 +370,42 @@ namespace hal
                 }
                 else if (config.control == DetectionConfiguration::Control::CHECK_TYPE)
                 {
+                    std::map<const GateType*, std::set<const GateType*>> allowed_gate_type_map;
+                    const auto* gl = nl->get_gate_library();
+                    for (const auto& gt_list : config.equivalent_types)
+                    {
+                        std::set<const GateType*> types;
+                        for (const auto& gt_name : gt_list)
+                        {
+                            types.insert(gl->get_gate_type_by_name(gt_name));
+                        }
+
+                        for (const auto* gt : types)
+                        {
+                            allowed_gate_type_map[gt] = types;
+                        }
+                    }
+
                     for (const auto& [src, dsts] : ff_map)
                     {
                         for (auto* dst : dsts)
                         {
-                            if (src->get_type() != dst->get_type())
+                            const auto* src_type = src->get_type();
+                            const auto* dst_type = dst->get_type();
+                            if (src_type != dst_type)
                             {
-                                continue;
+                                if (const auto src_it = allowed_gate_type_map.find(src_type); src_it != allowed_gate_type_map.end())
+                                {
+                                    const auto& allowed_gates = std::get<1>(*src_it);
+                                    if (allowed_gates.find(dst_type) == allowed_gates.end())
+                                    {
+                                        continue;
+                                    }
+                                }
+                                else
+                                {
+                                    continue;
+                                }
                             }
 
                             filtered_map[src].insert(dst);
@@ -388,6 +417,8 @@ namespace hal
                     std::unordered_map<const Gate*, std::map<PinType, const Net*>> control_map;
                     for (const auto* gate : start_gates)
                     {
+                        control_map[gate] = std::map<PinType, const Net*>();
+
                         for (const auto& ep : gate->get_fan_in_endpoints())
                         {
                             if (auto pin_type = ep->get_pin()->get_type(); control_types.find(pin_type) != control_types.end())
@@ -415,6 +446,8 @@ namespace hal
                     std::unordered_map<const Gate*, std::set<PinType>> control_map;
                     for (const auto* gate : start_gates)
                     {
+                        control_map[gate] = std::set<PinType>();
+
                         for (const auto& ep : gate->get_fan_in_endpoints())
                         {
                             auto sources = ep->get_net()->get_sources();
@@ -438,10 +471,10 @@ namespace hal
                     {
                         for (auto* dst : dsts)
                         {
-                            if (src->get_type() != dst->get_type())
-                            {
-                                continue;
-                            }
+                            // if (src->get_type() != dst->get_type())
+                            // {
+                            //     continue;
+                            // }
 
                             if (control_map.at(src) != control_map.at(dst))
                             {
@@ -487,7 +520,7 @@ namespace hal
                         }
 
                         u32 size = igraph_vector_int_size(&out_set);
-                        if (size < config.min_register_size)
+                        if (size <= config.min_register_size)
                         {
                             continue;
                         }
@@ -527,7 +560,7 @@ namespace hal
                         }
 
                         u32 size = igraph_vector_int_size(&out_set);
-                        if (size < config.min_register_size)
+                        if (size <= config.min_register_size)
                         {
                             continue;
                         }