Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 653 insertions, 529 deletions

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 853c2a0d4e..9b1f639f64 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -29,6 +29,7 @@
 #include <linux/spinlock.h>
 #include <linux/reset.h>
 #include <linux/math64.h>
+#include <net/ip.h>
 
 #include "ravb.h"
 
@@ -38,16 +39,6 @@
 		 NETIF_MSG_RX_ERR | \
 		 NETIF_MSG_TX_ERR)
 
-static const char *ravb_rx_irqs[NUM_RX_QUEUE] = {
-	"ch0", /* RAVB_BE */
-	"ch1", /* RAVB_NC */
-};
-
-static const char *ravb_tx_irqs[NUM_TX_QUEUE] = {
-	"ch18", /* RAVB_BE */
-	"ch19", /* RAVB_NC */
-};
-
 void ravb_modify(struct net_device *ndev, enum ravb_reg reg, u32 clear,
 		 u32 set)
 {
@@ -96,13 +87,13 @@ static void ravb_set_rate_gbeth(struct net_device *ndev)
 	struct ravb_private *priv = netdev_priv(ndev);
 
 	switch (priv->speed) {
-	case 10:                /* 10BASE */
+	case 10:		/* 10BASE */
 		ravb_write(ndev, GBETH_GECMR_SPEED_10, GECMR);
 		break;
-	case 100:               /* 100BASE */
+	case 100:		/* 100BASE */
 		ravb_write(ndev, GBETH_GECMR_SPEED_100, GECMR);
 		break;
-	case 1000:              /* 1000BASE */
+	case 1000:		/* 1000BASE */
 		ravb_write(ndev, GBETH_GECMR_SPEED_1000, GECMR);
 		break;
 	}
@@ -122,12 +113,23 @@ static void ravb_set_rate_rcar(struct net_device *ndev)
 	}
 }
 
-static void ravb_set_buffer_align(struct sk_buff *skb)
+static struct sk_buff *
+ravb_alloc_skb(struct net_device *ndev, const struct ravb_hw_info *info,
+	       gfp_t gfp_mask)
 {
-	u32 reserve = (unsigned long)skb->data & (RAVB_ALIGN - 1);
+	struct sk_buff *skb;
+	u32 reserve;
 
+	skb = __netdev_alloc_skb(ndev, info->rx_max_frame_size + RAVB_ALIGN - 1,
+				 gfp_mask);
+	if (!skb)
+		return NULL;
+
+	reserve = (unsigned long)skb->data & (RAVB_ALIGN - 1);
 	if (reserve)
 		skb_reserve(skb, RAVB_ALIGN - reserve);
+
+	return skb;
 }
 
 /* Get MAC address from the MAC address registers
@@ -200,6 +202,13 @@ static const struct mdiobb_ops bb_ops = {
 	.get_mdio_data = ravb_get_mdio_data,
 };
 
+static struct ravb_rx_desc *
+ravb_rx_get_desc(struct ravb_private *priv, unsigned int q,
+		 unsigned int i)
+{
+	return priv->rx_ring[q].raw + priv->info->rx_desc_size * i;
+}
+
 /* Free TX skb function for AVB-IP */
 static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only)
 {
@@ -244,67 +253,40 @@ static int ravb_tx_free(struct net_device *ndev, int q, bool free_txed_only)
 	return free_num;
 }
 
-static void ravb_rx_ring_free_gbeth(struct net_device *ndev, int q)
-{
-	struct ravb_private *priv = netdev_priv(ndev);
-	unsigned int ring_size;
-	unsigned int i;
-
-	if (!priv->rx_ring[q].desc)
-		return;
-
-	for (i = 0; i < priv->num_rx_ring[q]; i++) {
-		struct ravb_rx_desc *desc = &priv->rx_ring[q].desc[i];
-
-		if (!dma_mapping_error(ndev->dev.parent,
-				       le32_to_cpu(desc->dptr)))
-			dma_unmap_single(ndev->dev.parent,
-					 le32_to_cpu(desc->dptr),
-					 GBETH_RX_BUFF_MAX,
-					 DMA_FROM_DEVICE);
-	}
-	ring_size = sizeof(struct ravb_rx_desc) * (priv->num_rx_ring[q] + 1);
-	dma_free_coherent(ndev->dev.parent, ring_size, priv->rx_ring[q].desc,
-			  priv->rx_desc_dma[q]);
-	priv->rx_ring[q].desc = NULL;
-}
-
-static void ravb_rx_ring_free_rcar(struct net_device *ndev, int q)
+static void ravb_rx_ring_free(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	unsigned int ring_size;
 	unsigned int i;
 
-	if (!priv->rx_ring[q].ex_desc)
+	if (!priv->rx_ring[q].raw)
 		return;
 
 	for (i = 0; i < priv->num_rx_ring[q]; i++) {
-		struct ravb_ex_rx_desc *desc = &priv->rx_ring[q].ex_desc[i];
+		struct ravb_rx_desc *desc = ravb_rx_get_desc(priv, q, i);
 
 		if (!dma_mapping_error(ndev->dev.parent,
 				       le32_to_cpu(desc->dptr)))
 			dma_unmap_single(ndev->dev.parent,
 					 le32_to_cpu(desc->dptr),
-					 RX_BUF_SZ,
+					 priv->info->rx_max_frame_size,
 					 DMA_FROM_DEVICE);
 	}
-	ring_size = sizeof(struct ravb_ex_rx_desc) *
-		    (priv->num_rx_ring[q] + 1);
-	dma_free_coherent(ndev->dev.parent, ring_size, priv->rx_ring[q].ex_desc,
+	ring_size = priv->info->rx_desc_size * (priv->num_rx_ring[q] + 1);
+	dma_free_coherent(ndev->dev.parent, ring_size, priv->rx_ring[q].raw,
 			  priv->rx_desc_dma[q]);
-	priv->rx_ring[q].ex_desc = NULL;
+	priv->rx_ring[q].raw = NULL;
 }
 
 /* Free skb's and DMA buffers for Ethernet AVB */
 static void ravb_ring_free(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
-	const struct ravb_hw_info *info = priv->info;
 	unsigned int num_tx_desc = priv->num_tx_desc;
 	unsigned int ring_size;
 	unsigned int i;
 
-	info->rx_ring_free(ndev, q);
+	ravb_rx_ring_free(ndev, q);
 
 	if (priv->tx_ring[q]) {
 		ravb_tx_free(ndev, q, false);
@@ -335,7 +317,7 @@ static void ravb_ring_free(struct net_device *ndev, int q)
 	priv->tx_skb[q] = NULL;
 }
 
-static void ravb_rx_ring_format_gbeth(struct net_device *ndev, int q)
+static void ravb_rx_ring_format(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	struct ravb_rx_desc *rx_desc;
@@ -343,45 +325,15 @@ static void ravb_rx_ring_format_gbeth(struct net_device *ndev, int q)
 	dma_addr_t dma_addr;
 	unsigned int i;
 
-	rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
-	memset(priv->rx_ring[q].desc, 0, rx_ring_size);
-	/* Build RX ring buffer */
-	for (i = 0; i < priv->num_rx_ring[q]; i++) {
-		/* RX descriptor */
-		rx_desc = &priv->rx_ring[q].desc[i];
-		rx_desc->ds_cc = cpu_to_le16(GBETH_RX_DESC_DATA_SIZE);
-		dma_addr = dma_map_single(ndev->dev.parent, priv->rx_skb[q][i]->data,
-					  GBETH_RX_BUFF_MAX,
-					  DMA_FROM_DEVICE);
-		/* We just set the data size to 0 for a failed mapping which
-		 * should prevent DMA from happening...
-		 */
-		if (dma_mapping_error(ndev->dev.parent, dma_addr))
-			rx_desc->ds_cc = cpu_to_le16(0);
-		rx_desc->dptr = cpu_to_le32(dma_addr);
-		rx_desc->die_dt = DT_FEMPTY;
-	}
-	rx_desc = &priv->rx_ring[q].desc[i];
-	rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
-	rx_desc->die_dt = DT_LINKFIX; /* type */
-}
-
-static void ravb_rx_ring_format_rcar(struct net_device *ndev, int q)
-{
-	struct ravb_private *priv = netdev_priv(ndev);
-	struct ravb_ex_rx_desc *rx_desc;
-	unsigned int rx_ring_size = sizeof(*rx_desc) * priv->num_rx_ring[q];
-	dma_addr_t dma_addr;
-	unsigned int i;
-
-	memset(priv->rx_ring[q].ex_desc, 0, rx_ring_size);
+	rx_ring_size = priv->info->rx_desc_size * priv->num_rx_ring[q];
+	memset(priv->rx_ring[q].raw, 0, rx_ring_size);
 	/* Build RX ring buffer */
 	for (i = 0; i < priv->num_rx_ring[q]; i++) {
 		/* RX descriptor */
-		rx_desc = &priv->rx_ring[q].ex_desc[i];
-		rx_desc->ds_cc = cpu_to_le16(RX_BUF_SZ);
+		rx_desc = ravb_rx_get_desc(priv, q, i);
+		rx_desc->ds_cc = cpu_to_le16(priv->info->rx_max_desc_use);
 		dma_addr = dma_map_single(ndev->dev.parent, priv->rx_skb[q][i]->data,
-					  RX_BUF_SZ,
+					  priv->info->rx_max_frame_size,
 					  DMA_FROM_DEVICE);
 		/* We just set the data size to 0 for a failed mapping which
 		 * should prevent DMA from happening...
@@ -391,7 +343,7 @@ static void ravb_rx_ring_format_rcar(struct net_device *ndev, int q)
 		rx_desc->dptr = cpu_to_le32(dma_addr);
 		rx_desc->die_dt = DT_FEMPTY;
 	}
-	rx_desc = &priv->rx_ring[q].ex_desc[i];
+	rx_desc = ravb_rx_get_desc(priv, q, i);
 	rx_desc->dptr = cpu_to_le32((u32)priv->rx_desc_dma[q]);
 	rx_desc->die_dt = DT_LINKFIX; /* type */
 }
@@ -400,7 +352,6 @@ static void ravb_rx_ring_format_rcar(struct net_device *ndev, int q)
 static void ravb_ring_format(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
-	const struct ravb_hw_info *info = priv->info;
 	unsigned int num_tx_desc = priv->num_tx_desc;
 	struct ravb_tx_desc *tx_desc;
 	struct ravb_desc *desc;
@@ -413,7 +364,7 @@ static void ravb_ring_format(struct net_device *ndev, int q)
 	priv->dirty_rx[q] = 0;
 	priv->dirty_tx[q] = 0;
 
-	info->rx_ring_format(ndev, q);
+	ravb_rx_ring_format(ndev, q);
 
 	memset(priv->tx_ring[q], 0, tx_ring_size);
 	/* Build TX ring buffer */
@@ -439,31 +390,18 @@ static void ravb_ring_format(struct net_device *ndev, int q)
 	desc->dptr = cpu_to_le32((u32)priv->tx_desc_dma[q]);
 }
 
-static void *ravb_alloc_rx_desc_gbeth(struct net_device *ndev, int q)
+static void *ravb_alloc_rx_desc(struct net_device *ndev, int q)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	unsigned int ring_size;
 
-	ring_size = sizeof(struct ravb_rx_desc) * (priv->num_rx_ring[q] + 1);
+	ring_size = priv->info->rx_desc_size * (priv->num_rx_ring[q] + 1);
 
-	priv->rx_ring[q].desc = dma_alloc_coherent(ndev->dev.parent, ring_size,
-						   &priv->rx_desc_dma[q],
-						   GFP_KERNEL);
-	return priv->rx_ring[q].desc;
-}
+	priv->rx_ring[q].raw = dma_alloc_coherent(ndev->dev.parent, ring_size,
+						  &priv->rx_desc_dma[q],
+						  GFP_KERNEL);
 
-static void *ravb_alloc_rx_desc_rcar(struct net_device *ndev, int q)
-{
-	struct ravb_private *priv = netdev_priv(ndev);
-	unsigned int ring_size;
-
-	ring_size = sizeof(struct ravb_ex_rx_desc) * (priv->num_rx_ring[q] + 1);
-
-	priv->rx_ring[q].ex_desc = dma_alloc_coherent(ndev->dev.parent,
-						      ring_size,
-						      &priv->rx_desc_dma[q],
-						      GFP_KERNEL);
-	return priv->rx_ring[q].ex_desc;
+	return priv->rx_ring[q].raw;
 }
 
 /* Init skb and descriptor buffer for Ethernet AVB */
@@ -485,10 +423,9 @@ static int ravb_ring_init(struct net_device *ndev, int q)
 		goto error;
 
 	for (i = 0; i < priv->num_rx_ring[q]; i++) {
-		skb = __netdev_alloc_skb(ndev, info->max_rx_len, GFP_KERNEL);
+		skb = ravb_alloc_skb(ndev, info, GFP_KERNEL);
 		if (!skb)
 			goto error;
-		ravb_set_buffer_align(skb);
 		priv->rx_skb[q][i] = skb;
 	}
 
@@ -501,7 +438,7 @@ static int ravb_ring_init(struct net_device *ndev, int q)
 	}
 
 	/* Allocate all RX descriptors. */
-	if (!info->alloc_rx_desc(ndev, q))
+	if (!ravb_alloc_rx_desc(ndev, q))
 		goto error;
 
 	priv->dirty_rx[q] = 0;
@@ -523,6 +460,36 @@ error:
 	return -ENOMEM;
 }
 
+static void ravb_csum_init_gbeth(struct net_device *ndev)
+{
+	bool tx_enable = ndev->features & NETIF_F_HW_CSUM;
+	bool rx_enable = ndev->features & NETIF_F_RXCSUM;
+
+	if (!(tx_enable || rx_enable))
+		goto done;
+
+	ravb_write(ndev, 0, CSR0);
+	if (ravb_wait(ndev, CSR0, CSR0_TPE | CSR0_RPE, 0)) {
+		netdev_err(ndev, "Timeout enabling hardware checksum\n");
+
+		if (tx_enable)
+			ndev->features &= ~NETIF_F_HW_CSUM;
+
+		if (rx_enable)
+			ndev->features &= ~NETIF_F_RXCSUM;
+	} else {
+		if (tx_enable)
+			ravb_write(ndev, CSR1_TIP4 | CSR1_TTCP4 | CSR1_TUDP4, CSR1);
+
+		if (rx_enable)
+			ravb_write(ndev, CSR2_RIP4 | CSR2_RTCP4 | CSR2_RUDP4 | CSR2_RICMP4,
+				   CSR2);
+	}
+
+done:
+	ravb_write(ndev, CSR0_TPE | CSR0_RPE, CSR0);
+}
+
 static void ravb_emac_init_gbeth(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
@@ -537,7 +504,7 @@ static void ravb_emac_init_gbeth(struct net_device *ndev)
 	}
 
 	/* Receive frame limit set register */
-	ravb_write(ndev, GBETH_RX_BUFF_MAX + ETH_FCS_LEN, RFLR);
+	ravb_write(ndev, priv->info->rx_max_frame_size + ETH_FCS_LEN, RFLR);
 
 	/* EMAC Mode: PAUSE prohibition; Duplex; TX; RX; CRC Pass Through */
 	ravb_write(ndev, ECMR_ZPF | ((priv->duplex > 0) ? ECMR_DM : 0) |
@@ -554,7 +521,8 @@ static void ravb_emac_init_gbeth(struct net_device *ndev)
 
 	/* E-MAC status register clear */
 	ravb_write(ndev, ECSR_ICD | ECSR_LCHNG | ECSR_PFRI, ECSR);
-	ravb_write(ndev, CSR0_TPE | CSR0_RPE, CSR0);
+
+	ravb_csum_init_gbeth(ndev);
 
 	/* E-MAC interrupt enable register */
 	ravb_write(ndev, ECSIPR_ICDIP, ECSIPR);
@@ -597,6 +565,7 @@ static void ravb_emac_init(struct net_device *ndev)
 
 static int ravb_dmac_init_gbeth(struct net_device *ndev)
 {
+	struct ravb_private *priv = netdev_priv(ndev);
 	int error;
 
 	error = ravb_ring_init(ndev, RAVB_BE);
@@ -610,7 +579,7 @@ static int ravb_dmac_init_gbeth(struct net_device *ndev)
 	ravb_write(ndev, 0x60000000, RCR);
 
 	/* Set Max Frame Length (RTC) */
-	ravb_write(ndev, 0x7ffc0000 | GBETH_RX_BUFF_MAX, RTC);
+	ravb_write(ndev, 0x7ffc0000 | priv->info->rx_max_frame_size, RTC);
 
 	/* Set FIFO size */
 	ravb_write(ndev, 0x00222200, TGC);
@@ -735,6 +704,30 @@ static void ravb_get_tx_tstamp(struct net_device *ndev)
 	}
 }
 
+static void ravb_rx_csum_gbeth(struct sk_buff *skb)
+{
+	__wsum csum_ip_hdr, csum_proto;
+	u8 *hw_csum;
+
+	/* The hardware checksum status is contained in sizeof(__sum16) * 2 = 4
+	 * bytes appended to packet data. First 2 bytes is ip header checksum
+	 * and last 2 bytes is protocol checksum.
+	 */
+	if (unlikely(skb->len < sizeof(__sum16) * 2))
+		return;
+
+	hw_csum = skb_tail_pointer(skb) - sizeof(__sum16);
+	csum_proto = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
+
+	hw_csum -= sizeof(__sum16);
+	csum_ip_hdr = csum_unfold((__force __sum16)get_unaligned_le16(hw_csum));
+	skb_trim(skb, skb->len - 2 * sizeof(__sum16));
+
+	/* TODO: IPV6 Rx checksum */
+	if (skb->protocol == htons(ETH_P_IP) && !csum_ip_hdr && !csum_proto)
+		skb->ip_summed = CHECKSUM_UNNECESSARY;
+}
+
 static void ravb_rx_csum(struct sk_buff *skb)
 {
 	u8 *hw_csum;
@@ -759,7 +752,8 @@ static struct sk_buff *ravb_get_skb_gbeth(struct net_device *ndev, int entry,
 	skb = priv->rx_skb[RAVB_BE][entry];
 	priv->rx_skb[RAVB_BE][entry] = NULL;
 	dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
-			 ALIGN(GBETH_RX_BUFF_MAX, 16), DMA_FROM_DEVICE);
+			 ALIGN(priv->info->rx_max_frame_size, 16),
+			 DMA_FROM_DEVICE);
 
 	return skb;
 }
@@ -775,7 +769,7 @@ static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)
 	dma_addr_t dma_addr;
 	int rx_packets = 0;
 	u8  desc_status;
-	u16 pkt_len;
+	u16 desc_len;
 	u8  die_dt;
 	int entry;
 	int limit;
@@ -793,10 +787,10 @@ static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)
 		/* Descriptor type must be checked before all other reads */
 		dma_rmb();
 		desc_status = desc->msc;
-		pkt_len = le16_to_cpu(desc->ds_cc) & RX_DS;
+		desc_len = le16_to_cpu(desc->ds_cc) & RX_DS;
 
 		/* We use 0-byte descriptors to mark the DMA mapping errors */
-		if (!pkt_len)
+		if (!desc_len)
 			continue;
 
 		if (desc_status & MSC_MC)
@@ -817,23 +811,25 @@ static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)
 			switch (die_dt) {
 			case DT_FSINGLE:
 				skb = ravb_get_skb_gbeth(ndev, entry, desc);
-				skb_put(skb, pkt_len);
+				skb_put(skb, desc_len);
 				skb->protocol = eth_type_trans(skb, ndev);
+				if (ndev->features & NETIF_F_RXCSUM)
+					ravb_rx_csum_gbeth(skb);
 				napi_gro_receive(&priv->napi[q], skb);
 				rx_packets++;
-				stats->rx_bytes += pkt_len;
+				stats->rx_bytes += desc_len;
 				break;
 			case DT_FSTART:
 				priv->rx_1st_skb = ravb_get_skb_gbeth(ndev, entry, desc);
-				skb_put(priv->rx_1st_skb, pkt_len);
+				skb_put(priv->rx_1st_skb, desc_len);
 				break;
 			case DT_FMID:
 				skb = ravb_get_skb_gbeth(ndev, entry, desc);
 				skb_copy_to_linear_data_offset(priv->rx_1st_skb,
 							       priv->rx_1st_skb->len,
 							       skb->data,
-							       pkt_len);
-				skb_put(priv->rx_1st_skb, pkt_len);
+							       desc_len);
+				skb_put(priv->rx_1st_skb, desc_len);
 				dev_kfree_skb(skb);
 				break;
 			case DT_FEND:
@@ -841,15 +837,17 @@ static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)
 				skb_copy_to_linear_data_offset(priv->rx_1st_skb,
 							       priv->rx_1st_skb->len,
 							       skb->data,
-							       pkt_len);
-				skb_put(priv->rx_1st_skb, pkt_len);
+							       desc_len);
+				skb_put(priv->rx_1st_skb, desc_len);
 				dev_kfree_skb(skb);
 				priv->rx_1st_skb->protocol =
 					eth_type_trans(priv->rx_1st_skb, ndev);
+				if (ndev->features & NETIF_F_RXCSUM)
+					ravb_rx_csum_gbeth(priv->rx_1st_skb);
+				stats->rx_bytes += priv->rx_1st_skb->len;
 				napi_gro_receive(&priv->napi[q],
 						 priv->rx_1st_skb);
 				rx_packets++;
-				stats->rx_bytes += pkt_len;
 				break;
 			}
 		}
@@ -859,16 +857,15 @@ static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q)
 	for (; priv->cur_rx[q] - priv->dirty_rx[q] > 0; priv->dirty_rx[q]++) {
 		entry = priv->dirty_rx[q] % priv->num_rx_ring[q];
 		desc = &priv->rx_ring[q].desc[entry];
-		desc->ds_cc = cpu_to_le16(GBETH_RX_DESC_DATA_SIZE);
+		desc->ds_cc = cpu_to_le16(priv->info->rx_max_desc_use);
 
 		if (!priv->rx_skb[q][entry]) {
-			skb = netdev_alloc_skb(ndev, info->max_rx_len);
+			skb = ravb_alloc_skb(ndev, info, GFP_ATOMIC);
 			if (!skb)
 				break;
-			ravb_set_buffer_align(skb);
 			dma_addr = dma_map_single(ndev->dev.parent,
 						  skb->data,
-						  GBETH_RX_BUFF_MAX,
+						  priv->info->rx_max_frame_size,
 						  DMA_FROM_DEVICE);
 			skb_checksum_none_assert(skb);
 			/* We just set the data size to 0 for a failed mapping
@@ -941,7 +938,7 @@ static bool ravb_rx_rcar(struct net_device *ndev, int *quota, int q)
 			skb = priv->rx_skb[q][entry];
 			priv->rx_skb[q][entry] = NULL;
 			dma_unmap_single(ndev->dev.parent, le32_to_cpu(desc->dptr),
-					 RX_BUF_SZ,
+					 priv->info->rx_max_frame_size,
 					 DMA_FROM_DEVICE);
 			get_ts &= (q == RAVB_NC) ?
 					RAVB_RXTSTAMP_TYPE_V2_L2_EVENT :
@@ -971,15 +968,14 @@ static bool ravb_rx_rcar(struct net_device *ndev, int *quota, int q)
 	for (; priv->cur_rx[q] - priv->dirty_rx[q] > 0; priv->dirty_rx[q]++) {
 		entry = priv->dirty_rx[q] % priv->num_rx_ring[q];
 		desc = &priv->rx_ring[q].ex_desc[entry];
-		desc->ds_cc = cpu_to_le16(RX_BUF_SZ);
+		desc->ds_cc = cpu_to_le16(priv->info->rx_max_desc_use);
 
 		if (!priv->rx_skb[q][entry]) {
-			skb = netdev_alloc_skb(ndev, info->max_rx_len);
+			skb = ravb_alloc_skb(ndev, info, GFP_ATOMIC);
 			if (!skb)
 				break;	/* Better luck next round. */
-			ravb_set_buffer_align(skb);
 			dma_addr = dma_map_single(ndev->dev.parent, skb->data,
-						  le16_to_cpu(desc->ds_cc),
+						  priv->info->rx_max_frame_size,
 						  DMA_FROM_DEVICE);
 			skb_checksum_none_assert(skb);
 			/* We just set the data size to 0 for a failed mapping
@@ -1085,11 +1081,23 @@ static irqreturn_t ravb_emac_interrupt(int irq, void *dev_id)
 {
 	struct net_device *ndev = dev_id;
 	struct ravb_private *priv = netdev_priv(ndev);
+	struct device *dev = &priv->pdev->dev;
+	irqreturn_t result = IRQ_HANDLED;
+
+	pm_runtime_get_noresume(dev);
+
+	if (unlikely(!pm_runtime_active(dev))) {
+		result = IRQ_NONE;
+		goto out_rpm_put;
+	}
 
 	spin_lock(&priv->lock);
 	ravb_emac_interrupt_unlocked(ndev);
 	spin_unlock(&priv->lock);
-	return IRQ_HANDLED;
+
+out_rpm_put:
+	pm_runtime_put_noidle(dev);
+	return result;
 }
 
 /* Error interrupt handler */
@@ -1169,9 +1177,15 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id)
 	struct net_device *ndev = dev_id;
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
+	struct device *dev = &priv->pdev->dev;
 	irqreturn_t result = IRQ_NONE;
 	u32 iss;
 
+	pm_runtime_get_noresume(dev);
+
+	if (unlikely(!pm_runtime_active(dev)))
+		goto out_rpm_put;
+
 	spin_lock(&priv->lock);
 	/* Get interrupt status */
 	iss = ravb_read(ndev, ISS);
@@ -1215,6 +1229,9 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id)
 	}
 
 	spin_unlock(&priv->lock);
+
+out_rpm_put:
+	pm_runtime_put_noidle(dev);
 	return result;
 }
 
@@ -1223,9 +1240,15 @@ static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id)
 {
 	struct net_device *ndev = dev_id;
 	struct ravb_private *priv = netdev_priv(ndev);
+	struct device *dev = &priv->pdev->dev;
 	irqreturn_t result = IRQ_NONE;
 	u32 iss;
 
+	pm_runtime_get_noresume(dev);
+
+	if (unlikely(!pm_runtime_active(dev)))
+		goto out_rpm_put;
+
 	spin_lock(&priv->lock);
 	/* Get interrupt status */
 	iss = ravb_read(ndev, ISS);
@@ -1247,6 +1270,9 @@ static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id)
 	}
 
 	spin_unlock(&priv->lock);
+
+out_rpm_put:
+	pm_runtime_put_noidle(dev);
 	return result;
 }
 
@@ -1254,8 +1280,14 @@ static irqreturn_t ravb_dma_interrupt(int irq, void *dev_id, int q)
 {
 	struct net_device *ndev = dev_id;
 	struct ravb_private *priv = netdev_priv(ndev);
+	struct device *dev = &priv->pdev->dev;
 	irqreturn_t result = IRQ_NONE;
 
+	pm_runtime_get_noresume(dev);
+
+	if (unlikely(!pm_runtime_active(dev)))
+		goto out_rpm_put;
+
 	spin_lock(&priv->lock);
 
 	/* Network control/Best effort queue RX/TX */
@@ -1263,6 +1295,9 @@ static irqreturn_t ravb_dma_interrupt(int irq, void *dev_id, int q)
 		result = IRQ_HANDLED;
 
 	spin_unlock(&priv->lock);
+
+out_rpm_put:
+	pm_runtime_put_noidle(dev);
 	return result;
 }
 
@@ -1724,89 +1759,159 @@ static const struct ethtool_ops ravb_ethtool_ops = {
 	.set_wol		= ravb_set_wol,
 };
 
-static inline int ravb_hook_irq(unsigned int irq, irq_handler_t handler,
-				struct net_device *ndev, struct device *dev,
-				const char *ch)
+static int ravb_set_config_mode(struct net_device *ndev)
 {
-	char *name;
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
 	int error;
 
-	name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", ndev->name, ch);
-	if (!name)
-		return -ENOMEM;
-	error = request_irq(irq, handler, 0, name, ndev);
-	if (error)
-		netdev_err(ndev, "cannot request IRQ %s\n", name);
+	if (info->gptp) {
+		error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+		if (error)
+			return error;
+		/* Set CSEL value */
+		ravb_modify(ndev, CCC, CCC_CSEL, CCC_CSEL_HPB);
+	} else if (info->ccc_gac) {
+		error = ravb_set_opmode(ndev, CCC_OPC_CONFIG | CCC_GAC | CCC_CSEL_HPB);
+	} else {
+		error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+	}
 
 	return error;
 }
 
+static void ravb_set_gti(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
+
+	if (!(info->gptp || info->ccc_gac))
+		return;
+
+	ravb_write(ndev, priv->gti_tiv, GTI);
+
+	/* Request GTI loading */
+	ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
+}
+
+static int ravb_compute_gti(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	const struct ravb_hw_info *info = priv->info;
+	struct device *dev = ndev->dev.parent;
+	unsigned long rate;
+	u64 inc;
+
+	if (!(info->gptp || info->ccc_gac))
+		return 0;
+
+	if (info->gptp_ref_clk)
+		rate = clk_get_rate(priv->gptp_clk);
+	else
+		rate = clk_get_rate(priv->clk);
+	if (!rate)
+		return -EINVAL;
+
+	inc = div64_ul(1000000000ULL << 20, rate);
+
+	if (inc < GTI_TIV_MIN || inc > GTI_TIV_MAX) {
+		dev_err(dev, "gti.tiv increment 0x%llx is outside the range 0x%x - 0x%x\n",
+			inc, GTI_TIV_MIN, GTI_TIV_MAX);
+		return -EINVAL;
+	}
+	priv->gti_tiv = inc;
+
+	return 0;
+}
+
+/* Set tx and rx clock internal delay modes */
+static void ravb_parse_delay_mode(struct device_node *np, struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	bool explicit_delay = false;
+	u32 delay;
+
+	if (!priv->info->internal_delay)
+		return;
+
+	if (!of_property_read_u32(np, "rx-internal-delay-ps", &delay)) {
+		/* Valid values are 0 and 1800, according to DT bindings */
+		priv->rxcidm = !!delay;
+		explicit_delay = true;
+	}
+	if (!of_property_read_u32(np, "tx-internal-delay-ps", &delay)) {
+		/* Valid values are 0 and 2000, according to DT bindings */
+		priv->txcidm = !!delay;
+		explicit_delay = true;
+	}
+
+	if (explicit_delay)
+		return;
+
+	/* Fall back to legacy rgmii-*id behavior */
+	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
+	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID) {
+		priv->rxcidm = 1;
+		priv->rgmii_override = 1;
+	}
+
+	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
+	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) {
+		priv->txcidm = 1;
+		priv->rgmii_override = 1;
+	}
+}
+
+static void ravb_set_delay_mode(struct net_device *ndev)
+{
+	struct ravb_private *priv = netdev_priv(ndev);
+	u32 set = 0;
+
+	if (!priv->info->internal_delay)
+		return;
+
+	if (priv->rxcidm)
+		set |= APSR_RDM;
+	if (priv->txcidm)
+		set |= APSR_TDM;
+	ravb_modify(ndev, APSR, APSR_RDM | APSR_TDM, set);
+}
+
 /* Network device open function for Ethernet AVB */
 static int ravb_open(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
-	struct platform_device *pdev = priv->pdev;
-	struct device *dev = &pdev->dev;
+	struct device *dev = &priv->pdev->dev;
 	int error;
 
 	napi_enable(&priv->napi[RAVB_BE]);
 	if (info->nc_queues)
 		napi_enable(&priv->napi[RAVB_NC]);
 
-	if (!info->multi_irqs) {
-		error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED,
-				    ndev->name, ndev);
-		if (error) {
-			netdev_err(ndev, "cannot request IRQ\n");
-			goto out_napi_off;
-		}
-	} else {
-		error = ravb_hook_irq(ndev->irq, ravb_multi_interrupt, ndev,
-				      dev, "ch22:multi");
-		if (error)
-			goto out_napi_off;
-		error = ravb_hook_irq(priv->emac_irq, ravb_emac_interrupt, ndev,
-				      dev, "ch24:emac");
-		if (error)
-			goto out_free_irq;
-		error = ravb_hook_irq(priv->rx_irqs[RAVB_BE], ravb_be_interrupt,
-				      ndev, dev, "ch0:rx_be");
-		if (error)
-			goto out_free_irq_emac;
-		error = ravb_hook_irq(priv->tx_irqs[RAVB_BE], ravb_be_interrupt,
-				      ndev, dev, "ch18:tx_be");
-		if (error)
-			goto out_free_irq_be_rx;
-		error = ravb_hook_irq(priv->rx_irqs[RAVB_NC], ravb_nc_interrupt,
-				      ndev, dev, "ch1:rx_nc");
-		if (error)
-			goto out_free_irq_be_tx;
-		error = ravb_hook_irq(priv->tx_irqs[RAVB_NC], ravb_nc_interrupt,
-				      ndev, dev, "ch19:tx_nc");
-		if (error)
-			goto out_free_irq_nc_rx;
-
-		if (info->err_mgmt_irqs) {
-			error = ravb_hook_irq(priv->erra_irq, ravb_multi_interrupt,
-					      ndev, dev, "err_a");
-			if (error)
-				goto out_free_irq_nc_tx;
-			error = ravb_hook_irq(priv->mgmta_irq, ravb_multi_interrupt,
-					      ndev, dev, "mgmt_a");
-			if (error)
-				goto out_free_irq_erra;
-		}
-	}
+	error = pm_runtime_resume_and_get(dev);
+	if (error < 0)
+		goto out_napi_off;
+
+	/* Set AVB config mode */
+	error = ravb_set_config_mode(ndev);
+	if (error)
+		goto out_rpm_put;
+
+	ravb_set_delay_mode(ndev);
+	ravb_write(ndev, priv->desc_bat_dma, DBAT);
 
 	/* Device init */
 	error = ravb_dmac_init(ndev);
 	if (error)
-		goto out_free_irq_mgmta;
+		goto out_set_reset;
+
 	ravb_emac_init(ndev);
 
+	ravb_set_gti(ndev);
+
 	/* Initialise PTP Clock driver */
-	if (info->gptp)
+	if (info->gptp || info->ccc_gac)
 		ravb_ptp_init(ndev, priv->pdev);
 
 	/* PHY control start */
@@ -1820,29 +1925,14 @@ static int ravb_open(struct net_device *ndev)
 
 out_ptp_stop:
 	/* Stop PTP Clock driver */
-	if (info->gptp)
+	if (info->gptp || info->ccc_gac)
 		ravb_ptp_stop(ndev);
 	ravb_stop_dma(ndev);
-out_free_irq_mgmta:
-	if (!info->multi_irqs)
-		goto out_free_irq;
-	if (info->err_mgmt_irqs)
-		free_irq(priv->mgmta_irq, ndev);
-out_free_irq_erra:
-	if (info->err_mgmt_irqs)
-		free_irq(priv->erra_irq, ndev);
-out_free_irq_nc_tx:
-	free_irq(priv->tx_irqs[RAVB_NC], ndev);
-out_free_irq_nc_rx:
-	free_irq(priv->rx_irqs[RAVB_NC], ndev);
-out_free_irq_be_tx:
-	free_irq(priv->tx_irqs[RAVB_BE], ndev);
-out_free_irq_be_rx:
-	free_irq(priv->rx_irqs[RAVB_BE], ndev);
-out_free_irq_emac:
-	free_irq(priv->emac_irq, ndev);
-out_free_irq:
-	free_irq(ndev->irq, ndev);
+out_set_reset:
+	ravb_set_opmode(ndev, CCC_OPC_RESET);
+out_rpm_put:
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
 out_napi_off:
 	if (info->nc_queues)
 		napi_disable(&priv->napi[RAVB_NC]);
@@ -1927,6 +2017,36 @@ out_unlock:
 	rtnl_unlock();
 }
 
+static bool ravb_can_tx_csum_gbeth(struct sk_buff *skb)
+{
+	struct iphdr *ip = ip_hdr(skb);
+
+	/* TODO: Need to add support for VLAN tag 802.1Q */
+	if (skb_vlan_tag_present(skb))
+		return false;
+
+	/* TODO: Need to add hardware checksum for IPv6 */
+	if (skb->protocol != htons(ETH_P_IP))
+		return false;
+
+	switch (ip->protocol) {
+	case IPPROTO_TCP:
+		break;
+	case IPPROTO_UDP:
+		/* If the checksum value in the UDP header field is 0, TOE does
+		 * not calculate checksum for UDP part of this frame as it is
+		 * optional function as per standards.
+		 */
+		if (udp_hdr(skb)->check == 0)
+			return false;
+		break;
+	default:
+		return false;
+	}
+
+	return true;
+}
+
 /* Packet transmit function for Ethernet AVB */
 static netdev_tx_t ravb_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 {
@@ -1942,6 +2062,9 @@ static netdev_tx_t ravb_start_xmit(struct sk_buff *skb, struct net_device *ndev)
 	u32 entry;
 	u32 len;
 
+	if (skb->ip_summed == CHECKSUM_PARTIAL && !ravb_can_tx_csum_gbeth(skb))
+		skb_checksum_help(skb);
+
 	spin_lock_irqsave(&priv->lock, flags);
 	if (priv->cur_tx[q] - priv->dirty_tx[q] > (priv->num_tx_ring[q] - 1) *
 	    num_tx_desc) {
@@ -2076,8 +2199,15 @@ static struct net_device_stats *ravb_get_stats(struct net_device *ndev)
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
 	struct net_device_stats *nstats, *stats0, *stats1;
+	struct device *dev = &priv->pdev->dev;
 
 	nstats = &ndev->stats;
+
+	pm_runtime_get_noresume(dev);
+
+	if (!pm_runtime_active(dev))
+		goto out_rpm_put;
+
 	stats0 = &priv->stats[RAVB_BE];
 
 	if (info->tx_counters) {
@@ -2119,6 +2249,8 @@ static struct net_device_stats *ravb_get_stats(struct net_device *ndev)
 		nstats->rx_over_errors += stats1->rx_over_errors;
 	}
 
+out_rpm_put:
+	pm_runtime_put_noidle(dev);
 	return nstats;
 }
 
@@ -2141,6 +2273,8 @@ static int ravb_close(struct net_device *ndev)
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
 	struct ravb_tstamp_skb *ts_skb, *ts_skb2;
+	struct device *dev = &priv->pdev->dev;
+	int error;
 
 	netif_tx_stop_all_queues(ndev);
 
@@ -2149,8 +2283,16 @@ static int ravb_close(struct net_device *ndev)
 	ravb_write(ndev, 0, RIC2);
 	ravb_write(ndev, 0, TIC);
 
+	/* PHY disconnect */
+	if (ndev->phydev) {
+		phy_stop(ndev->phydev);
+		phy_disconnect(ndev->phydev);
+		if (of_phy_is_fixed_link(np))
+			of_phy_deregister_fixed_link(np);
+	}
+
 	/* Stop PTP Clock driver */
-	if (info->gptp)
+	if (info->gptp || info->ccc_gac)
 		ravb_ptp_stop(ndev);
 
 	/* Set the config mode to stop the AVB-DMAC's processes */
@@ -2167,29 +2309,8 @@ static int ravb_close(struct net_device *ndev)
 		}
 	}
 
-	/* PHY disconnect */
-	if (ndev->phydev) {
-		phy_stop(ndev->phydev);
-		phy_disconnect(ndev->phydev);
-		if (of_phy_is_fixed_link(np))
-			of_phy_deregister_fixed_link(np);
-	}
-
 	cancel_work_sync(&priv->work);
 
-	if (info->multi_irqs) {
-		free_irq(priv->tx_irqs[RAVB_NC], ndev);
-		free_irq(priv->rx_irqs[RAVB_NC], ndev);
-		free_irq(priv->tx_irqs[RAVB_BE], ndev);
-		free_irq(priv->rx_irqs[RAVB_BE], ndev);
-		free_irq(priv->emac_irq, ndev);
-		if (info->err_mgmt_irqs) {
-			free_irq(priv->erra_irq, ndev);
-			free_irq(priv->mgmta_irq, ndev);
-		}
-	}
-	free_irq(ndev->irq, ndev);
-
 	if (info->nc_queues)
 		napi_disable(&priv->napi[RAVB_NC]);
 	napi_disable(&priv->napi[RAVB_BE]);
@@ -2199,6 +2320,17 @@ static int ravb_close(struct net_device *ndev)
 	if (info->nc_queues)
 		ravb_ring_free(ndev, RAVB_NC);
 
+	/* Update statistics. */
+	ravb_get_stats(ndev);
+
+	/* Set reset mode. */
+	error = ravb_set_opmode(ndev, CCC_OPC_RESET);
+	if (error)
+		return error;
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
 	return 0;
 }
 
@@ -2322,11 +2454,58 @@ static void ravb_set_rx_csum(struct net_device *ndev, bool enable)
 	spin_unlock_irqrestore(&priv->lock, flags);
 }
 
+static int ravb_endisable_csum_gbeth(struct net_device *ndev, enum ravb_reg reg,
+				     u32 val, u32 mask)
+{
+	u32 csr0 = CSR0_TPE | CSR0_RPE;
+	int ret;
+
+	ravb_write(ndev, csr0 & ~mask, CSR0);
+	ret = ravb_wait(ndev, CSR0, mask, 0);
+	if (!ret)
+		ravb_write(ndev, val, reg);
+
+	ravb_write(ndev, csr0, CSR0);
+
+	return ret;
+}
+
 static int ravb_set_features_gbeth(struct net_device *ndev,
 				   netdev_features_t features)
 {
-	/* Place holder */
-	return 0;
+	netdev_features_t changed = ndev->features ^ features;
+	struct ravb_private *priv = netdev_priv(ndev);
+	unsigned long flags;
+	int ret = 0;
+	u32 val;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	if (changed & NETIF_F_RXCSUM) {
+		if (features & NETIF_F_RXCSUM)
+			val = CSR2_RIP4 | CSR2_RTCP4 | CSR2_RUDP4 | CSR2_RICMP4;
+		else
+			val = 0;
+
+		ret = ravb_endisable_csum_gbeth(ndev, CSR2, val, CSR0_RPE);
+		if (ret)
+			goto done;
+	}
+
+	if (changed & NETIF_F_HW_CSUM) {
+		if (features & NETIF_F_HW_CSUM)
+			val = CSR1_TIP4 | CSR1_TTCP4 | CSR1_TUDP4;
+		else
+			val = 0;
+
+		ret = ravb_endisable_csum_gbeth(ndev, CSR1, val, CSR0_TPE);
+		if (ret)
+			goto done;
+	}
+
+done:
+	spin_unlock_irqrestore(&priv->lock, flags);
+
+	return ret;
 }
 
 static int ravb_set_features_rcar(struct net_device *ndev,
@@ -2337,8 +2516,6 @@ static int ravb_set_features_rcar(struct net_device *ndev,
 	if (changed & NETIF_F_RXCSUM)
 		ravb_set_rx_csum(ndev, features & NETIF_F_RXCSUM);
 
-	ndev->features = features;
-
 	return 0;
 }
 
@@ -2347,8 +2524,24 @@ static int ravb_set_features(struct net_device *ndev,
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
+	struct device *dev = &priv->pdev->dev;
+	int ret;
+
+	pm_runtime_get_noresume(dev);
+
+	if (pm_runtime_active(dev))
+		ret = info->set_feature(ndev, features);
+	else
+		ret = 0;
+
+	pm_runtime_put_noidle(dev);
+
+	if (ret)
+		return ret;
+
+	ndev->features = features;
 
-	return info->set_feature(ndev, features);
+	return 0;
 }
 
 static const struct net_device_ops ravb_netdev_ops = {
@@ -2422,9 +2615,6 @@ static int ravb_mdio_release(struct ravb_private *priv)
 }
 
 static const struct ravb_hw_info ravb_gen3_hw_info = {
-	.rx_ring_free = ravb_rx_ring_free_rcar,
-	.rx_ring_format = ravb_rx_ring_format_rcar,
-	.alloc_rx_desc = ravb_alloc_rx_desc_rcar,
 	.receive = ravb_rx_rcar,
 	.set_rate = ravb_set_rate_rcar,
 	.set_feature = ravb_set_features_rcar,
@@ -2435,9 +2625,10 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 	.net_hw_features = NETIF_F_RXCSUM,
 	.net_features = NETIF_F_RXCSUM,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
-	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
 	.tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
-	.rx_max_buf_size = SZ_2K,
+	.rx_max_frame_size = SZ_2K,
+	.rx_max_desc_use = SZ_2K - ETH_FCS_LEN + sizeof(__sum16),
+	.rx_desc_size = sizeof(struct ravb_ex_rx_desc),
 	.internal_delay = 1,
 	.tx_counters = 1,
 	.multi_irqs = 1,
@@ -2448,9 +2639,6 @@ static const struct ravb_hw_info ravb_gen3_hw_info = {
 };
 
 static const struct ravb_hw_info ravb_gen2_hw_info = {
-	.rx_ring_free = ravb_rx_ring_free_rcar,
-	.rx_ring_format = ravb_rx_ring_format_rcar,
-	.alloc_rx_desc = ravb_alloc_rx_desc_rcar,
 	.receive = ravb_rx_rcar,
 	.set_rate = ravb_set_rate_rcar,
 	.set_feature = ravb_set_features_rcar,
@@ -2461,9 +2649,10 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
 	.net_hw_features = NETIF_F_RXCSUM,
 	.net_features = NETIF_F_RXCSUM,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
-	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
 	.tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
-	.rx_max_buf_size = SZ_2K,
+	.rx_max_frame_size = SZ_2K,
+	.rx_max_desc_use = SZ_2K - ETH_FCS_LEN + sizeof(__sum16),
+	.rx_desc_size = sizeof(struct ravb_ex_rx_desc),
 	.aligned_tx = 1,
 	.gptp = 1,
 	.nc_queues = 1,
@@ -2471,9 +2660,6 @@ static const struct ravb_hw_info ravb_gen2_hw_info = {
 };
 
 static const struct ravb_hw_info ravb_rzv2m_hw_info = {
-	.rx_ring_free = ravb_rx_ring_free_rcar,
-	.rx_ring_format = ravb_rx_ring_format_rcar,
-	.alloc_rx_desc = ravb_alloc_rx_desc_rcar,
 	.receive = ravb_rx_rcar,
 	.set_rate = ravb_set_rate_rcar,
 	.set_feature = ravb_set_features_rcar,
@@ -2484,9 +2670,10 @@ static const struct ravb_hw_info ravb_rzv2m_hw_info = {
 	.net_hw_features = NETIF_F_RXCSUM,
 	.net_features = NETIF_F_RXCSUM,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats),
-	.max_rx_len = RX_BUF_SZ + RAVB_ALIGN - 1,
 	.tccr_mask = TCCR_TSRQ0 | TCCR_TSRQ1 | TCCR_TSRQ2 | TCCR_TSRQ3,
-	.rx_max_buf_size = SZ_2K,
+	.rx_max_frame_size = SZ_2K,
+	.rx_max_desc_use = SZ_2K - ETH_FCS_LEN + sizeof(__sum16),
+	.rx_desc_size = sizeof(struct ravb_ex_rx_desc),
 	.multi_irqs = 1,
 	.err_mgmt_irqs = 1,
 	.gptp = 1,
@@ -2496,9 +2683,6 @@ static const struct ravb_hw_info ravb_rzv2m_hw_info = {
 };
 
 static const struct ravb_hw_info gbeth_hw_info = {
-	.rx_ring_free = ravb_rx_ring_free_gbeth,
-	.rx_ring_format = ravb_rx_ring_format_gbeth,
-	.alloc_rx_desc = ravb_alloc_rx_desc_gbeth,
 	.receive = ravb_rx_gbeth,
 	.set_rate = ravb_set_rate_gbeth,
 	.set_feature = ravb_set_features_gbeth,
@@ -2506,10 +2690,13 @@ static const struct ravb_hw_info gbeth_hw_info = {
 	.emac_init = ravb_emac_init_gbeth,
 	.gstrings_stats = ravb_gstrings_stats_gbeth,
 	.gstrings_size = sizeof(ravb_gstrings_stats_gbeth),
+	.net_hw_features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM,
+	.net_features = NETIF_F_RXCSUM | NETIF_F_HW_CSUM,
 	.stats_len = ARRAY_SIZE(ravb_gstrings_stats_gbeth),
-	.max_rx_len = ALIGN(GBETH_RX_BUFF_MAX, RAVB_ALIGN),
 	.tccr_mask = TCCR_TSRQ0,
-	.rx_max_buf_size = SZ_8K,
+	.rx_max_frame_size = SZ_8K,
+	.rx_max_desc_use = 4080,
+	.rx_desc_size = sizeof(struct ravb_rx_desc),
 	.aligned_tx = 1,
 	.tx_counters = 1,
 	.carrier_counters = 1,
@@ -2529,100 +2716,90 @@ static const struct of_device_id ravb_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, ravb_match_table);
 
-static int ravb_set_gti(struct net_device *ndev)
+static int ravb_setup_irq(struct ravb_private *priv, const char *irq_name,
+			  const char *ch, int *irq, irq_handler_t handler)
 {
-	struct ravb_private *priv = netdev_priv(ndev);
-	const struct ravb_hw_info *info = priv->info;
-	struct device *dev = ndev->dev.parent;
-	unsigned long rate;
-	uint64_t inc;
-
-	if (info->gptp_ref_clk)
-		rate = clk_get_rate(priv->gptp_clk);
-	else
-		rate = clk_get_rate(priv->clk);
-	if (!rate)
-		return -EINVAL;
+	struct platform_device *pdev = priv->pdev;
+	struct net_device *ndev = priv->ndev;
+	struct device *dev = &pdev->dev;
+	const char *devname = dev_name(dev);
+	unsigned long flags;
+	int error, irq_num;
 
-	inc = div64_ul(1000000000ULL << 20, rate);
+	if (irq_name) {
+		devname = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", devname, ch);
+		if (!devname)
+			return -ENOMEM;
 
-	if (inc < GTI_TIV_MIN || inc > GTI_TIV_MAX) {
-		dev_err(dev, "gti.tiv increment 0x%llx is outside the range 0x%x - 0x%x\n",
-			inc, GTI_TIV_MIN, GTI_TIV_MAX);
-		return -EINVAL;
+		irq_num = platform_get_irq_byname(pdev, irq_name);
+		flags = 0;
+	} else {
+		irq_num = platform_get_irq(pdev, 0);
+		flags = IRQF_SHARED;
 	}
+	if (irq_num < 0)
+		return irq_num;
 
-	ravb_write(ndev, inc, GTI);
+	if (irq)
+		*irq = irq_num;
 
-	return 0;
+	error = devm_request_irq(dev, irq_num, handler, flags, devname, ndev);
+	if (error)
+		netdev_err(ndev, "cannot request IRQ %s\n", devname);
+
+	return error;
 }
 
-static int ravb_set_config_mode(struct net_device *ndev)
+static int ravb_setup_irqs(struct ravb_private *priv)
 {
-	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
+	struct net_device *ndev = priv->ndev;
+	const char *irq_name, *emac_irq_name;
 	int error;
 
-	if (info->gptp) {
-		error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
-		if (error)
-			return error;
-		/* Set CSEL value */
-		ravb_modify(ndev, CCC, CCC_CSEL, CCC_CSEL_HPB);
-	} else if (info->ccc_gac) {
-		error = ravb_set_opmode(ndev, CCC_OPC_CONFIG | CCC_GAC | CCC_CSEL_HPB);
+	if (!info->multi_irqs)
+		return ravb_setup_irq(priv, NULL, NULL, &ndev->irq, ravb_interrupt);
+
+	if (info->err_mgmt_irqs) {
+		irq_name = "dia";
+		emac_irq_name = "line3";
 	} else {
-		error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+		irq_name = "ch22";
+		emac_irq_name = "ch24";
 	}
 
-	return error;
-}
-
-/* Set tx and rx clock internal delay modes */
-static void ravb_parse_delay_mode(struct device_node *np, struct net_device *ndev)
-{
-	struct ravb_private *priv = netdev_priv(ndev);
-	bool explicit_delay = false;
-	u32 delay;
+	error = ravb_setup_irq(priv, irq_name, "ch22:multi", &ndev->irq, ravb_multi_interrupt);
+	if (error)
+		return error;
 
-	if (!of_property_read_u32(np, "rx-internal-delay-ps", &delay)) {
-		/* Valid values are 0 and 1800, according to DT bindings */
-		priv->rxcidm = !!delay;
-		explicit_delay = true;
-	}
-	if (!of_property_read_u32(np, "tx-internal-delay-ps", &delay)) {
-		/* Valid values are 0 and 2000, according to DT bindings */
-		priv->txcidm = !!delay;
-		explicit_delay = true;
-	}
+	error = ravb_setup_irq(priv, emac_irq_name, "ch24:emac", &priv->emac_irq,
+			       ravb_emac_interrupt);
+	if (error)
+		return error;
 
-	if (explicit_delay)
-		return;
+	if (info->err_mgmt_irqs) {
+		error = ravb_setup_irq(priv, "err_a", "err_a", NULL, ravb_multi_interrupt);
+		if (error)
+			return error;
 
-	/* Fall back to legacy rgmii-*id behavior */
-	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
-	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_RXID) {
-		priv->rxcidm = 1;
-		priv->rgmii_override = 1;
+		error = ravb_setup_irq(priv, "mgmt_a", "mgmt_a", NULL, ravb_multi_interrupt);
+		if (error)
+			return error;
 	}
 
-	if (priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID ||
-	    priv->phy_interface == PHY_INTERFACE_MODE_RGMII_TXID) {
-		priv->txcidm = 1;
-		priv->rgmii_override = 1;
-	}
-}
+	error = ravb_setup_irq(priv, "ch0", "ch0:rx_be", NULL, ravb_be_interrupt);
+	if (error)
+		return error;
 
-static void ravb_set_delay_mode(struct net_device *ndev)
-{
-	struct ravb_private *priv = netdev_priv(ndev);
-	u32 set = 0;
+	error = ravb_setup_irq(priv, "ch1", "ch1:rx_nc", NULL, ravb_nc_interrupt);
+	if (error)
+		return error;
 
-	if (priv->rxcidm)
-		set |= APSR_RDM;
-	if (priv->txcidm)
-		set |= APSR_TDM;
-	ravb_modify(ndev, APSR, APSR_RDM | APSR_TDM, set);
+	error = ravb_setup_irq(priv, "ch18", "ch18:tx_be", NULL, ravb_be_interrupt);
+	if (error)
+		return error;
+
+	return ravb_setup_irq(priv, "ch19", "ch19:tx_nc", NULL, ravb_nc_interrupt);
 }
 
 static int ravb_probe(struct platform_device *pdev)
@@ -2632,9 +2809,8 @@ static int ravb_probe(struct platform_device *pdev)
 	struct reset_control *rstc;
 	struct ravb_private *priv;
 	struct net_device *ndev;
-	int error, irq, q;
 	struct resource *res;
-	int i;
+	int error, q;
 
 	if (!np) {
 		dev_err(&pdev->dev,
@@ -2642,7 +2818,7 @@ static int ravb_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL);
+	rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL);
 	if (IS_ERR(rstc))
 		return dev_err_probe(&pdev->dev, PTR_ERR(rstc),
 				     "failed to get cpg reset\n");
@@ -2661,25 +2837,6 @@ static int ravb_probe(struct platform_device *pdev)
 	if (error)
 		goto out_free_netdev;
 
-	pm_runtime_enable(&pdev->dev);
-	error = pm_runtime_resume_and_get(&pdev->dev);
-	if (error < 0)
-		goto out_rpm_disable;
-
-	if (info->multi_irqs) {
-		if (info->err_mgmt_irqs)
-			irq = platform_get_irq_byname(pdev, "dia");
-		else
-			irq = platform_get_irq_byname(pdev, "ch22");
-	} else {
-		irq = platform_get_irq(pdev, 0);
-	}
-	if (irq < 0) {
-		error = irq;
-		goto out_release;
-	}
-	ndev->irq = irq;
-
 	SET_NETDEV_DEV(ndev, &pdev->dev);
 
 	priv = netdev_priv(ndev);
@@ -2694,10 +2851,43 @@ static int ravb_probe(struct platform_device *pdev)
 		priv->num_rx_ring[RAVB_NC] = NC_RX_RING_SIZE;
 	}
 
+	error = ravb_setup_irqs(priv);
+	if (error)
+		goto out_reset_assert;
+
+	priv->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(priv->clk)) {
+		error = PTR_ERR(priv->clk);
+		goto out_reset_assert;
+	}
+
+	if (info->gptp_ref_clk) {
+		priv->gptp_clk = devm_clk_get(&pdev->dev, "gptp");
+		if (IS_ERR(priv->gptp_clk)) {
+			error = PTR_ERR(priv->gptp_clk);
+			goto out_reset_assert;
+		}
+	}
+
+	priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk");
+	if (IS_ERR(priv->refclk)) {
+		error = PTR_ERR(priv->refclk);
+		goto out_reset_assert;
+	}
+	clk_prepare(priv->refclk);
+
+	platform_set_drvdata(pdev, ndev);
+	pm_runtime_set_autosuspend_delay(&pdev->dev, 100);
+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_runtime_enable(&pdev->dev);
+	error = pm_runtime_resume_and_get(&pdev->dev);
+	if (error < 0)
+		goto out_rpm_disable;
+
 	priv->addr = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
 	if (IS_ERR(priv->addr)) {
 		error = PTR_ERR(priv->addr);
-		goto out_release;
+		goto out_rpm_put;
 	}
 
 	/* The Ether-specific entries in the device structure. */
@@ -2708,79 +2898,14 @@ static int ravb_probe(struct platform_device *pdev)
 
 	error = of_get_phy_mode(np, &priv->phy_interface);
 	if (error && error != -ENODEV)
-		goto out_release;
+		goto out_rpm_put;
 
 	priv->no_avb_link = of_property_read_bool(np, "renesas,no-ether-link");
 	priv->avb_link_active_low =
 		of_property_read_bool(np, "renesas,ether-link-active-low");
 
-	if (info->multi_irqs) {
-		if (info->err_mgmt_irqs)
-			irq = platform_get_irq_byname(pdev, "line3");
-		else
-			irq = platform_get_irq_byname(pdev, "ch24");
-		if (irq < 0) {
-			error = irq;
-			goto out_release;
-		}
-		priv->emac_irq = irq;
-		for (i = 0; i < NUM_RX_QUEUE; i++) {
-			irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]);
-			if (irq < 0) {
-				error = irq;
-				goto out_release;
-			}
-			priv->rx_irqs[i] = irq;
-		}
-		for (i = 0; i < NUM_TX_QUEUE; i++) {
-			irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]);
-			if (irq < 0) {
-				error = irq;
-				goto out_release;
-			}
-			priv->tx_irqs[i] = irq;
-		}
-
-		if (info->err_mgmt_irqs) {
-			irq = platform_get_irq_byname(pdev, "err_a");
-			if (irq < 0) {
-				error = irq;
-				goto out_release;
-			}
-			priv->erra_irq = irq;
-
-			irq = platform_get_irq_byname(pdev, "mgmt_a");
-			if (irq < 0) {
-				error = irq;
-				goto out_release;
-			}
-			priv->mgmta_irq = irq;
-		}
-	}
-
-	priv->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(priv->clk)) {
-		error = PTR_ERR(priv->clk);
-		goto out_release;
-	}
-
-	priv->refclk = devm_clk_get_optional(&pdev->dev, "refclk");
-	if (IS_ERR(priv->refclk)) {
-		error = PTR_ERR(priv->refclk);
-		goto out_release;
-	}
-	clk_prepare_enable(priv->refclk);
-
-	if (info->gptp_ref_clk) {
-		priv->gptp_clk = devm_clk_get(&pdev->dev, "gptp");
-		if (IS_ERR(priv->gptp_clk)) {
-			error = PTR_ERR(priv->gptp_clk);
-			goto out_disable_refclk;
-		}
-		clk_prepare_enable(priv->gptp_clk);
-	}
-
-	ndev->max_mtu = info->rx_max_buf_size - (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
+	ndev->max_mtu = info->rx_max_frame_size -
+		(ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN);
 	ndev->min_mtu = ETH_MIN_MTU;
 
 	/* FIXME: R-Car Gen2 has 4byte alignment restriction for tx buffer
@@ -2794,25 +2919,11 @@ static int ravb_probe(struct platform_device *pdev)
 	ndev->netdev_ops = &ravb_netdev_ops;
 	ndev->ethtool_ops = &ravb_ethtool_ops;
 
-	/* Set AVB config mode */
-	error = ravb_set_config_mode(ndev);
+	error = ravb_compute_gti(ndev);
 	if (error)
-		goto out_disable_gptp_clk;
-
-	if (info->gptp || info->ccc_gac) {
-		/* Set GTI value */
-		error = ravb_set_gti(ndev);
-		if (error)
-			goto out_disable_gptp_clk;
+		goto out_rpm_put;
 
-		/* Request GTI loading */
-		ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
-	}
-
-	if (info->internal_delay) {
-		ravb_parse_delay_mode(np, ndev);
-		ravb_set_delay_mode(ndev);
-	}
+	ravb_parse_delay_mode(np, ndev);
 
 	/* Allocate descriptor base address table */
 	priv->desc_bat_size = sizeof(struct ravb_desc) * DBAT_ENTRY_NUM;
@@ -2823,22 +2934,22 @@ static int ravb_probe(struct platform_device *pdev)
 			"Cannot allocate desc base address table (size %d bytes)\n",
 			priv->desc_bat_size);
 		error = -ENOMEM;
-		goto out_disable_gptp_clk;
+		goto out_rpm_put;
 	}
 	for (q = RAVB_BE; q < DBAT_ENTRY_NUM; q++)
 		priv->desc_bat[q].die_dt = DT_EOS;
-	ravb_write(ndev, priv->desc_bat_dma, DBAT);
 
 	/* Initialise HW timestamp list */
 	INIT_LIST_HEAD(&priv->ts_skb_list);
 
-	/* Initialise PTP Clock driver */
-	if (info->ccc_gac)
-		ravb_ptp_init(ndev, pdev);
-
 	/* Debug message level */
 	priv->msg_enable = RAVB_DEF_MSG_ENABLE;
 
+	/* Set config mode as this is needed for PHY initialization. */
+	error = ravb_set_opmode(ndev, CCC_OPC_CONFIG);
+	if (error)
+		goto out_rpm_put;
+
 	/* Read and set MAC address */
 	ravb_read_mac_address(np, ndev);
 	if (!is_valid_ether_addr(ndev->dev_addr)) {
@@ -2851,9 +2962,14 @@ static int ravb_probe(struct platform_device *pdev)
 	error = ravb_mdio_init(priv);
 	if (error) {
 		dev_err(&pdev->dev, "failed to initialize MDIO\n");
-		goto out_dma_free;
+		goto out_reset_mode;
 	}
 
+	/* Undo previous switch to config opmode. */
+	error = ravb_set_opmode(ndev, CCC_OPC_RESET);
+	if (error)
+		goto out_mdio_release;
+
 	netif_napi_add(ndev, &priv->napi[RAVB_BE], ravb_poll);
 	if (info->nc_queues)
 		netif_napi_add(ndev, &priv->napi[RAVB_NC], ravb_poll);
@@ -2869,7 +2985,8 @@ static int ravb_probe(struct platform_device *pdev)
 	netdev_info(ndev, "Base address at %#x, %pM, IRQ %d.\n",
 		    (u32)ndev->base_addr, ndev->dev_addr, ndev->irq);
 
-	platform_set_drvdata(pdev, ndev);
+	pm_runtime_mark_last_busy(&pdev->dev);
+	pm_runtime_put_autosuspend(&pdev->dev);
 
 	return 0;
 
@@ -2878,22 +2995,19 @@ out_napi_del:
 		netif_napi_del(&priv->napi[RAVB_NC]);
 
 	netif_napi_del(&priv->napi[RAVB_BE]);
+out_mdio_release:
 	ravb_mdio_release(priv);
-out_dma_free:
+out_reset_mode:
+	ravb_set_opmode(ndev, CCC_OPC_RESET);
 	dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat,
 			  priv->desc_bat_dma);
-
-	/* Stop PTP Clock driver */
-	if (info->ccc_gac)
-		ravb_ptp_stop(ndev);
-out_disable_gptp_clk:
-	clk_disable_unprepare(priv->gptp_clk);
-out_disable_refclk:
-	clk_disable_unprepare(priv->refclk);
-out_release:
+out_rpm_put:
 	pm_runtime_put(&pdev->dev);
 out_rpm_disable:
 	pm_runtime_disable(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
+	clk_unprepare(priv->refclk);
+out_reset_assert:
 	reset_control_assert(rstc);
 out_free_netdev:
 	free_netdev(ndev);
@@ -2905,6 +3019,12 @@ static void ravb_remove(struct platform_device *pdev)
 	struct net_device *ndev = platform_get_drvdata(pdev);
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
+	struct device *dev = &priv->pdev->dev;
+	int error;
+
+	error = pm_runtime_resume_and_get(dev);
+	if (error < 0)
+		return;
 
 	unregister_netdev(ndev);
 	if (info->nc_queues)
@@ -2913,20 +3033,13 @@ static void ravb_remove(struct platform_device *pdev)
 
 	ravb_mdio_release(priv);
 
-	/* Stop PTP Clock driver */
-	if (info->ccc_gac)
-		ravb_ptp_stop(ndev);
-
 	dma_free_coherent(ndev->dev.parent, priv->desc_bat_size, priv->desc_bat,
 			  priv->desc_bat_dma);
 
-	ravb_set_opmode(ndev, CCC_OPC_RESET);
-
-	clk_disable_unprepare(priv->gptp_clk);
-	clk_disable_unprepare(priv->refclk);
-
-	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_put_sync_suspend(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(dev);
+	clk_unprepare(priv->refclk);
 	reset_control_assert(priv->rstc);
 	free_netdev(ndev);
 	platform_set_drvdata(pdev, NULL);
@@ -2952,6 +3065,9 @@ static int ravb_wol_setup(struct net_device *ndev)
 	/* Enable MagicPacket */
 	ravb_modify(ndev, ECMR, ECMR_MPDE, ECMR_MPDE);
 
+	if (priv->info->ccc_gac)
+		ravb_ptp_stop(ndev);
+
 	return enable_irq_wake(priv->emac_irq);
 }
 
@@ -2959,6 +3075,20 @@ static int ravb_wol_restore(struct net_device *ndev)
 {
 	struct ravb_private *priv = netdev_priv(ndev);
 	const struct ravb_hw_info *info = priv->info;
+	int error;
+
+	/* Set reset mode to rearm the WoL logic. */
+	error = ravb_set_opmode(ndev, CCC_OPC_RESET);
+	if (error)
+		return error;
+
+	/* Set AVB config mode. */
+	error = ravb_set_config_mode(ndev);
+	if (error)
+		return error;
+
+	if (priv->info->ccc_gac)
+		ravb_ptp_init(ndev, priv->pdev);
 
 	if (info->nc_queues)
 		napi_enable(&priv->napi[RAVB_NC]);
@@ -2972,102 +3102,96 @@ static int ravb_wol_restore(struct net_device *ndev)
 	return disable_irq_wake(priv->emac_irq);
 }
 
-static int __maybe_unused ravb_suspend(struct device *dev)
+static int ravb_suspend(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct ravb_private *priv = netdev_priv(ndev);
 	int ret;
 
 	if (!netif_running(ndev))
-		return 0;
+		goto reset_assert;
 
 	netif_device_detach(ndev);
 
 	if (priv->wol_enabled)
-		ret = ravb_wol_setup(ndev);
-	else
-		ret = ravb_close(ndev);
+		return ravb_wol_setup(ndev);
 
-	if (priv->info->ccc_gac)
-		ravb_ptp_stop(ndev);
+	ret = ravb_close(ndev);
+	if (ret)
+		return ret;
 
-	return ret;
+	ret = pm_runtime_force_suspend(&priv->pdev->dev);
+	if (ret)
+		return ret;
+
+reset_assert:
+	return reset_control_assert(priv->rstc);
 }
 
-static int __maybe_unused ravb_resume(struct device *dev)
+static int ravb_resume(struct device *dev)
 {
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct ravb_private *priv = netdev_priv(ndev);
-	const struct ravb_hw_info *info = priv->info;
-	int ret = 0;
-
-	/* If WoL is enabled set reset mode to rearm the WoL logic */
-	if (priv->wol_enabled) {
-		ret = ravb_set_opmode(ndev, CCC_OPC_RESET);
-		if (ret)
-			return ret;
-	}
-
-	/* All register have been reset to default values.
-	 * Restore all registers which where setup at probe time and
-	 * reopen device if it was running before system suspended.
-	 */
+	int ret;
 
-	/* Set AVB config mode */
-	ret = ravb_set_config_mode(ndev);
+	ret = reset_control_deassert(priv->rstc);
 	if (ret)
 		return ret;
 
-	if (info->gptp || info->ccc_gac) {
-		/* Set GTI value */
-		ret = ravb_set_gti(ndev);
+	if (!netif_running(ndev))
+		return 0;
+
+	/* If WoL is enabled restore the interface. */
+	if (priv->wol_enabled) {
+		ret = ravb_wol_restore(ndev);
+		if (ret)
+			return ret;
+	} else {
+		ret = pm_runtime_force_resume(dev);
 		if (ret)
 			return ret;
-
-		/* Request GTI loading */
-		ravb_modify(ndev, GCCR, GCCR_LTI, GCCR_LTI);
 	}
 
-	if (info->internal_delay)
-		ravb_set_delay_mode(ndev);
+	/* Reopening the interface will restore the device to the working state. */
+	ret = ravb_open(ndev);
+	if (ret < 0)
+		goto out_rpm_put;
 
-	/* Restore descriptor base address table */
-	ravb_write(ndev, priv->desc_bat_dma, DBAT);
+	ravb_set_rx_mode(ndev);
+	netif_device_attach(ndev);
 
-	if (priv->info->ccc_gac)
-		ravb_ptp_init(ndev, priv->pdev);
+	return 0;
 
-	if (netif_running(ndev)) {
-		if (priv->wol_enabled) {
-			ret = ravb_wol_restore(ndev);
-			if (ret)
-				return ret;
-		}
-		ret = ravb_open(ndev);
-		if (ret < 0)
-			return ret;
-		ravb_set_rx_mode(ndev);
-		netif_device_attach(ndev);
+out_rpm_put:
+	if (!priv->wol_enabled) {
+		pm_runtime_mark_last_busy(dev);
+		pm_runtime_put_autosuspend(dev);
 	}
 
 	return ret;
 }
 
-static int __maybe_unused ravb_runtime_nop(struct device *dev)
+static int ravb_runtime_suspend(struct device *dev)
 {
-	/* Runtime PM callback shared between ->runtime_suspend()
-	 * and ->runtime_resume(). Simply returns success.
-	 *
-	 * This driver re-initializes all registers after
-	 * pm_runtime_get_sync() anyway so there is no need
-	 * to save and restore registers here.
-	 */
+	struct net_device *ndev = dev_get_drvdata(dev);
+	struct ravb_private *priv = netdev_priv(ndev);
+
+	clk_disable(priv->refclk);
+
 	return 0;
 }
 
+static int ravb_runtime_resume(struct device *dev)
+{
+	struct net_device *ndev = dev_get_drvdata(dev);
+	struct ravb_private *priv = netdev_priv(ndev);
+
+	return clk_enable(priv->refclk);
+}
+
 static const struct dev_pm_ops ravb_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(ravb_suspend, ravb_resume)
-	SET_RUNTIME_PM_OPS(ravb_runtime_nop, ravb_runtime_nop, NULL)
+	SYSTEM_SLEEP_PM_OPS(ravb_suspend, ravb_resume)
+	RUNTIME_PM_OPS(ravb_runtime_suspend, ravb_runtime_resume, NULL)
 };
 
 static struct platform_driver ravb_driver = {
@@ -3075,7 +3199,7 @@ static struct platform_driver ravb_driver = {
 	.remove_new	= ravb_remove,
 	.driver = {
 		.name	= "ravb",
-		.pm	= &ravb_dev_pm_ops,
+		.pm	= pm_ptr(&ravb_dev_pm_ops),
 		.of_match_table = ravb_match_table,
 	},
 };