diff --git a/sys/dev/bwn/if_bwn.c b/sys/dev/bwn/if_bwn.c
index d1300249745..4874347d27e 100644
--- a/sys/dev/bwn/if_bwn.c
+++ b/sys/dev/bwn/if_bwn.c
@@ -4712,11 +4712,9 @@ bwn_rf_turnoff(struct bwn_mac *mac)
 
 /*
  * SSB PHY reset.
- *
- * XXX TODO: BCMA PHY reset.
  */
 static void
-bwn_phy_reset(struct bwn_mac *mac)
+bwn_phy_reset_siba(struct bwn_mac *mac)
 {
 	struct bwn_softc *sc = mac->mac_sc;
 
@@ -4729,6 +4727,17 @@ bwn_phy_reset(struct bwn_mac *mac)
 	DELAY(1000);
 }
 
+static void
+bwn_phy_reset(struct bwn_mac *mac)
+{
+
+	if (bwn_is_bus_siba(mac)) {
+		bwn_phy_reset_siba(mac);
+	} else {
+		BWN_ERRPRINTF(mac->mac_sc, "%s: unknown bus!\n", __func__);
+	}
+}
+
 static int
 bwn_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
 {
diff --git a/sys/dev/bwn/if_bwn_phy_common.c b/sys/dev/bwn/if_bwn_phy_common.c
index bcc9dc9dfb6..4a3b044de11 100644
--- a/sys/dev/bwn/if_bwn_phy_common.c
+++ b/sys/dev/bwn/if_bwn_phy_common.c
@@ -157,6 +157,8 @@ bwn_phy_force_clock(struct bwn_mac *mac, int force)
 		else
 			tmp &= ~SIBA_TGSLOW_FGC;
 		siba_write_4(sc->sc_dev, SIBA_TGSLOW, tmp);
+	} else {
+		BWN_ERRPRINTF(sc, "%s: unknown bus!\n", __func__);
 	}
 }
 
@@ -190,6 +192,8 @@ bwn_mac_phy_clock_set(struct bwn_mac *mac, int enabled)
 		else
 			    val &= ~BWN_TGSLOW_MACPHYCLKEN;
 		siba_write_4(sc->sc_dev, SIBA_TGSLOW, val);
+	} else {
+		BWN_ERRPRINTF(sc, "%s: unknown bus!\n", __func__);
 	}
 }
 
@@ -205,5 +209,7 @@ bwn_wireless_core_phy_pll_reset(struct bwn_mac *mac)
 		siba_cc_mask32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, ~0x4);
 		siba_cc_set32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, 0x4);
 		siba_cc_mask32(sc->sc_dev, SIBA_CC_CHIPCTL_DATA, ~0x4);
+	} else {
+		BWN_ERRPRINTF(sc, "%s: unknown bus!\n", __func__);
 	}
 }