diff --git a/drivers/net/ethernet/freescale/enetc/Kconfig b/drivers/net/ethernet/freescale/enetc/Kconfig
index f86283411f4d..2b43848e1363 100644
--- a/drivers/net/ethernet/freescale/enetc/Kconfig
+++ b/drivers/net/ethernet/freescale/enetc/Kconfig
@@ -42,16 +42,6 @@ config FSL_ENETC_PTP_CLOCK
 
 	  If compiled as module (M), the module name is fsl-enetc-ptp.
 
-config FSL_ENETC_HW_TIMESTAMPING
-	bool "ENETC hardware timestamping support"
-	depends on FSL_ENETC || FSL_ENETC_VF
-	help
-	  Enable hardware timestamping support on the Ethernet packets
-	  using the SO_TIMESTAMPING API. Because the RX BD ring dynamic
-	  allocation has not been supported and it is too expensive to use
-	  extended RX BDs if timestamping is not used, this option enables
-	  extended RX BDs in order to support hardware timestamping.
-
 config FSL_ENETC_QOS
 	bool "ENETC hardware Time-sensitive Network support"
 	depends on (FSL_ENETC || FSL_ENETC_VF) && (NET_SCH_TAPRIO || NET_SCH_CBS)
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index f1bbaef428c0..ccf2611f4a20 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -487,7 +487,7 @@ static int enetc_refill_rx_ring(struct enetc_bdr *rx_ring, const int buff_cnt)
 	return j;
 }
 
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
 static void enetc_get_rx_tstamp(struct net_device *ndev,
 				union enetc_rx_bd *rxbd,
 				struct sk_buff *skb)
@@ -501,7 +501,8 @@ static void enetc_get_rx_tstamp(struct net_device *ndev,
 	if (le16_to_cpu(rxbd->r.flags) & ENETC_RXBD_FLAG_TSTMP) {
 		lo = enetc_rd(hw, ENETC_SICTR0);
 		hi = enetc_rd(hw, ENETC_SICTR1);
-		tstamp_lo = le32_to_cpu(rxbd->r.tstamp);
+		rxbd = enetc_rxbd_ext(rxbd);
+		tstamp_lo = le32_to_cpu(rxbd->ext.tstamp);
 		if (lo <= tstamp_lo)
 			hi -= 1;
 
@@ -515,7 +516,7 @@ static void enetc_get_rx_tstamp(struct net_device *ndev,
 static void enetc_get_offloads(struct enetc_bdr *rx_ring,
 			       union enetc_rx_bd *rxbd, struct sk_buff *skb)
 {
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
 	struct enetc_ndev_priv *priv = netdev_priv(rx_ring->ndev);
 #endif
 	/* TODO: hashing */
@@ -532,7 +533,7 @@ static void enetc_get_offloads(struct enetc_bdr *rx_ring,
 	if (le16_to_cpu(rxbd->r.flags) & ENETC_RXBD_FLAG_VLAN)
 		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
 				       le16_to_cpu(rxbd->r.vlan_opt));
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
 	if (priv->active_offloads & ENETC_F_RX_TSTAMP)
 		enetc_get_rx_tstamp(rx_ring->ndev, rxbd, skb);
 #endif
@@ -838,15 +839,19 @@ static void enetc_free_tx_resources(struct enetc_ndev_priv *priv)
 		enetc_free_txbdr(priv->tx_ring[i]);
 }
 
-static int enetc_alloc_rxbdr(struct enetc_bdr *rxr)
+static int enetc_alloc_rxbdr(struct enetc_bdr *rxr, bool extended)
 {
+	size_t size = sizeof(union enetc_rx_bd);
 	int err;
 
 	rxr->rx_swbd = vzalloc(rxr->bd_count * sizeof(struct enetc_rx_swbd));
 	if (!rxr->rx_swbd)
 		return -ENOMEM;
 
-	err = enetc_dma_alloc_bdr(rxr, sizeof(union enetc_rx_bd));
+	if (extended)
+		size *= 2;
+
+	err = enetc_dma_alloc_bdr(rxr, size);
 	if (err) {
 		vfree(rxr->rx_swbd);
 		return err;
@@ -855,6 +860,7 @@ static int enetc_alloc_rxbdr(struct enetc_bdr *rxr)
 	rxr->next_to_clean = 0;
 	rxr->next_to_use = 0;
 	rxr->next_to_alloc = 0;
+	rxr->ext_en = extended;
 
 	return 0;
 }
@@ -874,10 +880,11 @@ static void enetc_free_rxbdr(struct enetc_bdr *rxr)
 
 static int enetc_alloc_rx_resources(struct enetc_ndev_priv *priv)
 {
+	bool extended = !!(priv->active_offloads & ENETC_F_RX_TSTAMP);
 	int i, err;
 
 	for (i = 0; i < priv->num_rx_rings; i++) {
-		err = enetc_alloc_rxbdr(priv->rx_ring[i]);
+		err = enetc_alloc_rxbdr(priv->rx_ring[i], extended);
 
 		if (err)
 			goto fail;
@@ -1167,9 +1174,10 @@ static void enetc_setup_rxbdr(struct enetc_hw *hw, struct enetc_bdr *rx_ring)
 	enetc_rxbdr_wr(hw, idx, ENETC_RBICIR0, ENETC_RBICIR0_ICEN | 0x1);
 
 	rbmr = ENETC_RBMR_EN;
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
-	rbmr |= ENETC_RBMR_BDS;
-#endif
+
+	if (rx_ring->ext_en)
+		rbmr |= ENETC_RBMR_BDS;
+
 	if (rx_ring->ndev->features & NETIF_F_HW_VLAN_CTAG_RX)
 		rbmr |= ENETC_RBMR_VTE;
 
@@ -1570,11 +1578,12 @@ int enetc_set_features(struct net_device *ndev,
 	return 0;
 }
 
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
 static int enetc_hwtstamp_set(struct net_device *ndev, struct ifreq *ifr)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
 	struct hwtstamp_config config;
+	int ao;
 
 	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
 		return -EFAULT;
@@ -1590,6 +1599,7 @@ static int enetc_hwtstamp_set(struct net_device *ndev, struct ifreq *ifr)
 		return -ERANGE;
 	}
 
+	ao = priv->active_offloads;
 	switch (config.rx_filter) {
 	case HWTSTAMP_FILTER_NONE:
 		priv->active_offloads &= ~ENETC_F_RX_TSTAMP;
@@ -1599,6 +1609,11 @@ static int enetc_hwtstamp_set(struct net_device *ndev, struct ifreq *ifr)
 		config.rx_filter = HWTSTAMP_FILTER_ALL;
 	}
 
+	if (netif_running(ndev) && ao != priv->active_offloads) {
+		enetc_close(ndev);
+		enetc_open(ndev);
+	}
+
 	return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
 	       -EFAULT : 0;
 }
@@ -1625,7 +1640,7 @@ static int enetc_hwtstamp_get(struct net_device *ndev, struct ifreq *ifr)
 
 int enetc_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
 {
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
 	if (cmd == SIOCSHWTSTAMP)
 		return enetc_hwtstamp_set(ndev, rq);
 	if (cmd == SIOCGHWTSTAMP)
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
index 1cd4cddd5c58..56c43f35b633 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h
@@ -73,6 +73,7 @@ struct enetc_bdr {
 
 	dma_addr_t bd_dma_base;
 	u8 tsd_enable; /* Time specific departure */
+	bool ext_en; /* enable h/w descriptor extensions */
 } ____cacheline_aligned_in_smp;
 
 static inline void enetc_bdr_idx_inc(struct enetc_bdr *bdr, int *i)
@@ -107,7 +108,13 @@ struct enetc_cbdr {
 
 static inline union enetc_rx_bd *enetc_rxbd(struct enetc_bdr *rx_ring, int i)
 {
-	return &(((union enetc_rx_bd *)rx_ring->bd_base)[i]);
+	int hw_idx = i;
+
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
+	if (rx_ring->ext_en)
+		hw_idx = 2 * i;
+#endif
+	return &(((union enetc_rx_bd *)rx_ring->bd_base)[hw_idx]);
 }
 
 static inline union enetc_rx_bd *enetc_rxbd_next(struct enetc_bdr *rx_ring,
@@ -115,12 +122,21 @@ static inline union enetc_rx_bd *enetc_rxbd_next(struct enetc_bdr *rx_ring,
 						 int i)
 {
 	rxbd++;
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
+	if (rx_ring->ext_en)
+		rxbd++;
+#endif
 	if (unlikely(++i == rx_ring->bd_count))
 		rxbd = rx_ring->bd_base;
 
 	return rxbd;
 }
 
+static inline union enetc_rx_bd *enetc_rxbd_ext(union enetc_rx_bd *rxbd)
+{
+	return ++rxbd;
+}
+
 struct enetc_msg_swbd {
 	void *vaddr;
 	dma_addr_t dma;
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c b/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
index 888d45fef529..34bd1f3fb415 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_ethtool.c
@@ -574,7 +574,7 @@ static int enetc_get_ts_info(struct net_device *ndev,
 		info->phc_index = -1;
 	}
 
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+#ifdef CONFIG_FSL_ENETC_PTP_CLOCK
 	info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
 				SOF_TIMESTAMPING_RX_HARDWARE |
 				SOF_TIMESTAMPING_RAW_HARDWARE;
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_hw.h b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
index da134e211c1a..2a6523136947 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_hw.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
@@ -418,9 +418,6 @@ union enetc_rx_bd {
 	struct {
 		__le64 addr;
 		u8 reserved[8];
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
-		u8 reserved1[16];
-#endif
 	} w;
 	struct {
 		__le16 inet_csum;
@@ -435,11 +432,11 @@ union enetc_rx_bd {
 			};
 			__le32 lstatus;
 		};
-#ifdef CONFIG_FSL_ENETC_HW_TIMESTAMPING
+	} r;
+	struct {
 		__le32 tstamp;
 		u8 reserved[12];
-#endif
-	} r;
+	} ext;
 };
 
 #define ENETC_RXBD_LSTATUS_R	BIT(30)