diff --git a/mt7915/init.c b/mt7915/init.c
index b39e2206..341a9c1d 100644
--- a/mt7915/init.c
+++ b/mt7915/init.c
@@ -309,6 +309,7 @@ static void
 mt7915_init_wiphy(struct ieee80211_hw *hw)
 {
 	struct mt7915_phy *phy = mt7915_hw_phy(hw);
+	struct mt76_dev *mdev = &phy->dev->mt76;
 	struct wiphy *wiphy = hw->wiphy;
 	struct mt7915_dev *dev = phy->dev;
 
@@ -337,6 +338,12 @@ mt7915_init_wiphy(struct ieee80211_hw *hw)
 	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_VHT);
 	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE);
 
+	if (!mdev->dev->of_node ||
+	    !of_property_read_bool(mdev->dev->of_node,
+				   "mediatek,disable-radar-background"))
+		wiphy_ext_feature_set(wiphy,
+				      NL80211_EXT_FEATURE_RADAR_BACKGROUND);
+
 	ieee80211_hw_set(hw, HAS_RATE_CONTROL);
 	ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
 	ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);