diff --git a/wifi/1.5/IWifiChip.hal b/wifi/1.5/IWifiChip.hal
index 5a3e288..e199850 100644
--- a/wifi/1.5/IWifiChip.hal
+++ b/wifi/1.5/IWifiChip.hal
@@ -303,4 +303,25 @@
     getUsableChannels(WifiBand band, bitfield<WifiIfaceMode> ifaceModeMask,
             bitfield<UsableChannelFilter> filterMask)
         generates (WifiStatus status, vec<WifiUsableChannel> channels);
+
+    /**
+     * Trigger subsystem restart
+     *
+     * If the framework detects a problem (e.g. connection failure),
+     * it must call this function to attempt recovery.
+     *
+     * When the wifi HAL receiveds triggerSubsystemRestart(), it must restart
+     * the wlan subsystem, especially the wlan firmware.
+     *
+     * Regarding the callback function for subsystem restart, refer to documentation of
+     * |IWifiEventCallback.onSubsystemRestart| for details.
+     *
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    triggerSubsystemRestart() generates (WifiStatus status);
 };
diff --git a/wifi/1.5/IWifiEventCallback.hal b/wifi/1.5/IWifiEventCallback.hal
index 17dce39..ff27630 100644
--- a/wifi/1.5/IWifiEventCallback.hal
+++ b/wifi/1.5/IWifiEventCallback.hal
@@ -17,5 +17,12 @@
 package android.hardware.wifi@1.5;
 
 import @1.0::IWifiEventCallback;
+import @1.0::WifiStatus;
 
-interface IWifiEventCallback extends @1.0::IWifiEventCallback {};
+interface IWifiEventCallback extends @1.0::IWifiEventCallback {
+  /**
+    * Must be called when the Wi-Fi subsystem restart completes.
+    * Once this event is received, framework must fully reset the Wi-Fi stack state.
+    */
+  oneway onSubsystemRestart(WifiStatus status);
+};
diff --git a/wifi/1.5/default/wifi.cpp b/wifi/1.5/default/wifi.cpp
index b4037e9..b9f20a4 100644
--- a/wifi/1.5/default/wifi.cpp
+++ b/wifi/1.5/default/wifi.cpp
@@ -131,7 +131,7 @@
                 WifiStatus wifi_status =
                     createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, error);
                 for (const auto& callback : event_cb_handler_.getCallbacks()) {
-                    if (!callback->onFailure(wifi_status).isOk()) {
+                    if (!callback->onSubsystemRestart(wifi_status).isOk()) {
                         LOG(ERROR) << "Failed to invoke onFailure callback";
                     }
                 }
diff --git a/wifi/1.5/default/wifi_chip.cpp b/wifi/1.5/default/wifi_chip.cpp
index 0499f45..961f9da 100644
--- a/wifi/1.5/default/wifi_chip.cpp
+++ b/wifi/1.5/default/wifi_chip.cpp
@@ -747,6 +747,13 @@
                            ifaceModeMask, filterMask);
 }
 
+Return<void> WifiChip::triggerSubsystemRestart(
+    triggerSubsystemRestart_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::triggerSubsystemRestartInternal,
+                           hidl_status_cb);
+}
+
 void WifiChip::invalidateAndRemoveAllIfaces() {
     invalidateAndClearBridgedApAll();
     invalidateAndClearAll(ap_ifaces_);
@@ -1522,6 +1529,11 @@
     return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_usable_channels};
 }
 
+WifiStatus WifiChip::triggerSubsystemRestartInternal() {
+    auto legacy_status = legacy_hal_.lock()->triggerSubsystemRestart();
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
 WifiStatus WifiChip::handleChipConfiguration(
     /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
     ChipModeId mode_id) {
diff --git a/wifi/1.5/default/wifi_chip.h b/wifi/1.5/default/wifi_chip.h
index 92d639f..bd40ead 100644
--- a/wifi/1.5/default/wifi_chip.h
+++ b/wifi/1.5/default/wifi_chip.h
@@ -184,6 +184,8 @@
         WifiBand band, hidl_bitfield<WifiIfaceMode> ifaceModeMask,
         hidl_bitfield<UsableChannelFilter> filterMask,
         getUsableChannels_cb _hidl_cb) override;
+    Return<void> triggerSubsystemRestart(
+        triggerSubsystemRestart_cb hidl_status_cb) override;
 
    private:
     void invalidateAndRemoveAllIfaces();
@@ -303,6 +305,7 @@
     void invalidateAndClearBridgedApAll();
     void invalidateAndClearBridgedAp(const std::string& br_name);
     bool findUsingNameFromBridgedApInstances(const std::string& name);
+    WifiStatus triggerSubsystemRestartInternal();
 
     ChipId chip_id_;
     std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
diff --git a/wifi/1.5/default/wifi_legacy_hal.cpp b/wifi/1.5/default/wifi_legacy_hal.cpp
index 45ad84b..848fbd6 100644
--- a/wifi/1.5/default/wifi_legacy_hal.cpp
+++ b/wifi/1.5/default/wifi_legacy_hal.cpp
@@ -1676,6 +1676,10 @@
     return {status, std::move(channels)};
 }
 
+wifi_error WifiLegacyHal::triggerSubsystemRestart() {
+    return global_func_table_.wifi_trigger_subsystem_restart();
+}
+
 void WifiLegacyHal::invalidate() {
     global_handle_ = nullptr;
     iface_name_to_handle_.clear();
diff --git a/wifi/1.5/default/wifi_legacy_hal.h b/wifi/1.5/default/wifi_legacy_hal.h
index 8ebc66a..2bb7631 100644
--- a/wifi/1.5/default/wifi_legacy_hal.h
+++ b/wifi/1.5/default/wifi_legacy_hal.h
@@ -716,6 +716,8 @@
     std::pair<wifi_error, std::vector<wifi_usable_channel>> getUsableChannels(
         uint32_t band_mask, uint32_t iface_mode_mask, uint32_t filter_mask);
 
+    wifi_error triggerSubsystemRestart();
+
    private:
     // Retrieve interface handles for all the available interfaces.
     wifi_error retrieveIfaceHandles();
diff --git a/wifi/1.5/default/wifi_legacy_hal_stubs.cpp b/wifi/1.5/default/wifi_legacy_hal_stubs.cpp
index 6212960..dd860d6 100644
--- a/wifi/1.5/default/wifi_legacy_hal_stubs.cpp
+++ b/wifi/1.5/default/wifi_legacy_hal_stubs.cpp
@@ -160,6 +160,7 @@
     populateStubFor(&hal_fn->wifi_twt_clear_stats);
     populateStubFor(&hal_fn->wifi_set_dtim_config);
     populateStubFor(&hal_fn->wifi_get_usable_channels);
+    populateStubFor(&hal_fn->wifi_trigger_subsystem_restart);
     return true;
 }
 }  // namespace legacy_hal