Index: sys/dev/dwc/if_dwc.c
===================================================================
--- sys/dev/dwc/if_dwc.c
+++ sys/dev/dwc/if_dwc.c
@@ -587,19 +587,25 @@
 	struct ifmultiaddr *ifma;
 	struct ifnet *ifp;
 	uint8_t *eaddr, val;
-	uint32_t crc, ffval, hashbit, hashreg, hi, lo, reg;
+	uint32_t crc, ffval, hashbit, hashreg, hi, lo, hash[8];
+	int nhash, i;
 
 	DWC_ASSERT_LOCKED(sc);
 
 	ifp = sc->ifp;
+	nhash = sc->mactype == DWC_GMAC_ALT_DESC ? 2 : 8;
 
 	/*
 	 * Set the multicast (group) filter hash.
 	 */
-	if ((ifp->if_flags & IFF_ALLMULTI))
+	if ((ifp->if_flags & IFF_ALLMULTI) != 0) {
 		ffval = (FRAME_FILTER_PM);
-	else {
+		for (i = 0; i < nhash; i++)
+			hash[i] = ~0;
+	} else {
 		ffval = (FRAME_FILTER_HMC);
+		for (i = 0; i < nhash; i++)
+			hash[i] = 0;
 		if_maddr_rlock(ifp);
 		TAILQ_FOREACH(ifma, &sc->ifp->if_multiaddrs, ifma_link) {
 			if (ifma->ifma_addr->sa_family != AF_LINK)
@@ -608,13 +614,15 @@
 				ifma->ifma_addr), ETHER_ADDR_LEN);
 
 			/* Take lower 8 bits and reverse it */
-			val = bitreverse(~crc & 0xff);
-			hashreg = (val >> 5);
+			if (sc->mactype == DWC_GMAC_ALT_DESC) {
+				val = bitreverse(~crc & 0xff) >> 26;
+				hashreg = (val >> 5) == 0;
+			} else {
+				val = bitreverse(~crc & 0xff);
+				hashreg = (val >> 5);
+			}
 			hashbit = (val & 31);
-
-			reg = READ4(sc, HASH_TABLE_REG(hashreg));
-			reg |= (1 << hashbit);
-			WRITE4(sc, HASH_TABLE_REG(hashreg), reg);
+			hash[hashreg] |= (1 << hashbit);
 		}
 		if_maddr_runlock(ifp);
 	}
@@ -635,6 +643,8 @@
 	WRITE4(sc, MAC_ADDRESS_LOW(0), lo);
 	WRITE4(sc, MAC_ADDRESS_HIGH(0), hi);
 	WRITE4(sc, MAC_FRAME_FILTER, ffval);
+	for (i = 0; i < nhash; i++)
+		WRITE4(sc, HASH_TABLE_REG(i), hash[i]);
 }
 
 static int