Index: sys/arm/mv/mv_pci.c
===================================================================
--- sys/arm/mv/mv_pci.c
+++ sys/arm/mv/mv_pci.c
@@ -420,8 +420,8 @@
 {
 	struct mv_pcib_softc *sc;
 	phandle_t node, parnode;
-	uint32_t val, unit;
-	int err;
+	uint32_t val, unit, reg0;
+	int err, bus, devfn;
 
 	sc = device_get_softc(self);
 	sc->sc_dev = self;
@@ -486,6 +486,22 @@
 	if (err)
 		return (err);
 
+	/* 
+	 * Preliminary bus enumeration to find first linked devices and set
+	 * appropriate bus number from which should start the actual enumeration
+	 */
+	for (bus = 0; bus < PCI_BUSMAX; bus++) {
+		for (devfn = 0; devfn < mv_pcib_maxslots(self); devfn++) {
+			reg0 = mv_pcib_read_config(self, bus, devfn, devfn & 0x7, 0x0, 4);
+			if (reg0 == (~0U))
+				continue; /* no device */
+			else {
+				sc->sc_busnr = bus; /* update bus number */
+				break;
+			}
+		}
+	}
+
 	if (sc->sc_mode == MV_MODE_ROOT) {
 		err = mv_pcib_init(sc, sc->sc_busnr,
 		    mv_pcib_maxslots(sc->sc_dev));