diff --git a/mac80211.c b/mac80211.c
index 83c001a0..b863a92c 100644
--- a/mac80211.c
+++ b/mac80211.c
@@ -681,6 +681,7 @@ mt76_alloc_device(struct device *pdev, unsigned int size,
 	dev = hw->priv;
 	dev->hw = hw;
 	dev->dev = pdev;
+	dev->init_wiphy = NULL;
 	dev->drv = drv_ops;
 	dev->dma_dev = pdev;
 
@@ -779,6 +780,12 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,
 	mt76_check_sband(&dev->phy, &phy->sband_5g, NL80211_BAND_5GHZ);
 	mt76_check_sband(&dev->phy, &phy->sband_6g, NL80211_BAND_6GHZ);
 
+	if (dev->init_wiphy) {
+		ret = dev->init_wiphy(dev);
+		if (ret)
+			return ret;
+	}
+
 	if (IS_ENABLED(CONFIG_MT76_LEDS)) {
 		ret = mt76_led_init(phy);
 		if (ret)
diff --git a/mt76.h b/mt76.h
index 0f31d903..e7c201cd 100644
--- a/mt76.h
+++ b/mt76.h
@@ -954,6 +954,9 @@ struct mt76_dev {
 	const struct mt76_bus_ops *bus;
 	const struct mt76_driver_ops *drv;
 	const struct mt76_mcu_ops *mcu_ops;
+
+	/* Optional callback to finalize wiphy state before registration. */
+	int (*init_wiphy)(struct mt76_dev *dev);
 	struct device *dev;
 	struct device *dma_dev;