diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index e1cdfbe52199..2fee64687381 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -113,7 +113,7 @@ static void
 mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy,
 			   struct seq_file *file)
 {
-	struct mt7915_dev *dev = file->private;
+	struct mt7915_dev *dev = phy->dev;
 	bool ext_phy = phy != &dev->phy;
 	int bound[15], range[4], i, n;
 
@@ -146,7 +146,7 @@ mt7915_ampdu_stat_read_phy(struct mt7915_phy *phy,
 static void
 mt7915_txbf_stat_read_phy(struct mt7915_phy *phy, struct seq_file *s)
 {
-	struct mt7915_dev *dev = s->private;
+	struct mt7915_dev *dev = phy->dev;
 	bool ext_phy = phy != &dev->phy;
 	static const char * const bw[] = {
 		"BW20", "BW40", "BW80", "BW160"
@@ -203,14 +203,12 @@ mt7915_txbf_stat_read_phy(struct mt7915_phy *phy, struct seq_file *s)
 static int
 mt7915_tx_stats_show(struct seq_file *file, void *data)
 {
-	struct mt7915_dev *dev = file->private;
+	struct mt7915_phy *phy = file->private;
+	struct mt7915_dev *dev = phy->dev;
 	int stat[8], i, n;
 
-	mt7915_ampdu_stat_read_phy(&dev->phy, file);
-	mt7915_txbf_stat_read_phy(&dev->phy, file);
-
-	mt7915_ampdu_stat_read_phy(mt7915_ext_phy(dev), file);
-	mt7915_txbf_stat_read_phy(mt7915_ext_phy(dev), file);
+	mt7915_ampdu_stat_read_phy(phy, file);
+	mt7915_txbf_stat_read_phy(phy, file);
 
 	/* Tx amsdu info */
 	seq_puts(file, "Tx MSDU statistics:\n");
@@ -262,18 +260,15 @@ mt7915_queues_acq(struct seq_file *s, void *data)
 }
 
 static int
-mt7915_queues_read(struct seq_file *s, void *data)
+mt7915_queues_show(struct seq_file *file, void *data)
 {
-	struct mt7915_dev *dev = dev_get_drvdata(s->private);
-	struct mt76_phy *mphy_ext = dev->mt76.phy2;
-	struct mt76_queue *ext_q = mphy_ext ? mphy_ext->q_tx[MT_TXQ_BE] : NULL;
+	struct mt7915_phy *phy = file->private;
+	struct mt7915_dev *dev = phy->dev;
 	struct {
 		struct mt76_queue *q;
 		char *queue;
 	} queue_map[] = {
-		{ dev->mphy.q_tx[MT_TXQ_BE],	 "WFDMA0" },
-		{ ext_q,			 "WFDMA1" },
-		{ dev->mphy.q_tx[MT_TXQ_BE],	 "WFDMA0" },
+		{ phy->mt76->q_tx[MT_TXQ_BE],	 "WFDMA"  },
 		{ dev->mt76.q_mcu[MT_MCUQ_WM],	 "MCUWM"  },
 		{ dev->mt76.q_mcu[MT_MCUQ_WA],	 "MCUWA"  },
 		{ dev->mt76.q_mcu[MT_MCUQ_FWDL], "MCUFWQ" },
@@ -286,7 +281,7 @@ mt7915_queues_read(struct seq_file *s, void *data)
 		if (!q)
 			continue;
 
-		seq_printf(s,
+		seq_printf(file,
 			   "%s:	queued=%d head=%d tail=%d\n",
 			   queue_map[i].queue, q->queued, q->head,
 			   q->tail);
@@ -295,6 +290,8 @@ mt7915_queues_read(struct seq_file *s, void *data)
 	return 0;
 }
 
+DEFINE_SHOW_ATTRIBUTE(mt7915_queues);
+
 static void
 mt7915_puts_rate_txpower(struct seq_file *s, struct mt7915_phy *phy)
 {
@@ -325,39 +322,43 @@ mt7915_puts_rate_txpower(struct seq_file *s, struct mt7915_phy *phy)
 }
 
 static int
-mt7915_read_rate_txpower(struct seq_file *s, void *data)
+mt7915_rate_txpower_show(struct seq_file *file, void *data)
 {
-	struct mt7915_dev *dev = dev_get_drvdata(s->private);
+	struct mt7915_phy *phy = file->private;
 
-	mt7915_puts_rate_txpower(s, &dev->phy);
-	mt7915_puts_rate_txpower(s, mt7915_ext_phy(dev));
+	mt7915_puts_rate_txpower(file, phy);
 
 	return 0;
 }
 
-int mt7915_init_debugfs(struct mt7915_dev *dev)
+DEFINE_SHOW_ATTRIBUTE(mt7915_rate_txpower);
+
+int mt7915_init_debugfs(struct mt7915_phy *phy)
 {
+	struct mt7915_dev *dev = phy->dev;
+	bool ext_phy = phy != &dev->phy;
 	struct dentry *dir;
 
-	dir = mt76_register_debugfs(&dev->mt76);
+	dir = mt76_register_debugfs_fops(phy->mt76, NULL);
 	if (!dir)
 		return -ENOMEM;
 
-	debugfs_create_devm_seqfile(dev->mt76.dev, "queues", dir,
-				    mt7915_queues_read);
+	debugfs_create_file("xmit-queues", 0400, dir, phy, &mt7915_queues_fops);
 	debugfs_create_devm_seqfile(dev->mt76.dev, "acq", dir,
 				    mt7915_queues_acq);
-	debugfs_create_file("tx_stats", 0400, dir, dev, &mt7915_tx_stats_fops);
+	debugfs_create_file("tx_stats", 0400, dir, phy, &mt7915_tx_stats_fops);
 	debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug);
 	debugfs_create_file("implicit_txbf", 0600, dir, dev,
 			    &fops_implicit_txbf);
-	debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern);
-	/* test knobs */
-	debugfs_create_file("radar_trigger", 0200, dir, dev,
-			    &fops_radar_trigger);
+	debugfs_create_file("txpower_sku", 0400, dir, phy,
+			    &mt7915_rate_txpower_fops);
+	if (!dev->dbdc_support || ext_phy) {
+		debugfs_create_u32("dfs_hw_pattern", 0400, dir,
+				   &dev->hw_pattern);
+		debugfs_create_file("radar_trigger", 0200, dir, dev,
+				    &fops_radar_trigger);
+	}
 	debugfs_create_file("ser_trigger", 0200, dir, dev, &fops_ser_trigger);
-	debugfs_create_devm_seqfile(dev->mt76.dev, "txpower_sku", dir,
-				    mt7915_read_rate_txpower);
 
 	return 0;
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index ba41ed38a4c5..dc0f5bf53e4d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -407,6 +407,10 @@ static int mt7915_register_ext_phy(struct mt7915_dev *dev)
 	if (ret)
 		goto error;
 
+	ret = mt7915_init_debugfs(phy);
+	if (ret)
+		goto error;
+
 	return 0;
 
 error:
@@ -862,7 +866,7 @@ int mt7915_register_device(struct mt7915_dev *dev)
 	if (ret)
 		return ret;
 
-	return mt7915_init_debugfs(dev);
+	return mt7915_init_debugfs(&dev->phy);
 }
 
 void mt7915_unregister_device(struct mt7915_dev *dev)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index ab8fc27646e0..d3e1f2fdb8ea 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -414,7 +414,7 @@ int mt7915_dfs_init_radar_detector(struct mt7915_phy *phy);
 void mt7915_set_stream_he_caps(struct mt7915_phy *phy);
 void mt7915_set_stream_vht_txbf_caps(struct mt7915_phy *phy);
 void mt7915_update_channel(struct mt76_phy *mphy);
-int mt7915_init_debugfs(struct mt7915_dev *dev);
+int mt7915_init_debugfs(struct mt7915_phy *phy);
 #ifdef CONFIG_MAC80211_DEBUGFS
 void mt7915_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			    struct ieee80211_sta *sta, struct dentry *dir);
