diff --git a/include/uapi/linux/hsr_netlink.h b/include/uapi/linux/hsr_netlink.h
index c218ef9c35dd..d540ea9bbef4 100644
--- a/include/uapi/linux/hsr_netlink.h
+++ b/include/uapi/linux/hsr_netlink.h
@@ -17,7 +17,7 @@
 /* Generic Netlink HSR family definition
  */
 
-/* attributes */
+/* attributes for HSR or PRP node */
 enum {
 	HSR_A_UNSPEC,
 	HSR_A_NODE_ADDR,
diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
index 26842ffd0501..2ead061e3fc2 100644
--- a/include/uapi/linux/if_link.h
+++ b/include/uapi/linux/if_link.h
@@ -908,7 +908,14 @@ enum {
 #define IFLA_IPOIB_MAX (__IFLA_IPOIB_MAX - 1)
 
 
-/* HSR section */
+/* HSR/PRP section, both uses same interface */
+
+/* Different redundancy protocols for hsr device */
+enum {
+	HSR_PROTOCOL_HSR,
+	HSR_PROTOCOL_PRP,
+	HSR_PROTOCOL_MAX,
+};
 
 enum {
 	IFLA_HSR_UNSPEC,
@@ -918,6 +925,9 @@ enum {
 	IFLA_HSR_SUPERVISION_ADDR,	/* Supervision frame multicast addr */
 	IFLA_HSR_SEQ_NR,
 	IFLA_HSR_VERSION,		/* HSR version */
+	IFLA_HSR_PROTOCOL,		/* Indicate different protocol than
+					 * HSR. For example PRP.
+					 */
 	__IFLA_HSR_MAX,
 };
 
diff --git a/net/hsr/Kconfig b/net/hsr/Kconfig
index 8095b034e76e..e2e396870230 100644
--- a/net/hsr/Kconfig
+++ b/net/hsr/Kconfig
@@ -4,24 +4,35 @@
 #
 
 config HSR
-	tristate "High-availability Seamless Redundancy (HSR)"
-	help
+	tristate "High-availability Seamless Redundancy (HSR & PRP)"
+	---help---
+	  This enables IEC 62439 defined High-availability Seamless
+	  Redundancy (HSR) and Parallel Redundancy Protocol (PRP).
+
 	  If you say Y here, then your Linux box will be able to act as a
-	  DANH ("Doubly attached node implementing HSR"). For this to work,
-	  your Linux box needs (at least) two physical Ethernet interfaces,
-	  and it must be connected as a node in a ring network together with
-	  other HSR capable nodes.
+	  DANH ("Doubly attached node implementing HSR") or DANP ("Doubly
+	  attached node implementing PRP"). For this to work, your Linux box
+	  needs (at least) two physical Ethernet interfaces.
+
+	  For DANH, it must be connected as a node in a ring network together
+	  with other HSR capable nodes. All Ethernet frames sent over the hsr
+	  device will be sent in both directions on the ring (over both slave
+	  ports), giving a redundant, instant fail-over network. Each HSR node
+	  in the ring acts like a bridge for HSR frames, but filters frames
+	  that have been forwarded earlier.
 
-	  All Ethernet frames sent over the hsr device will be sent in both
-	  directions on the ring (over both slave ports), giving a redundant,
-	  instant fail-over network. Each HSR node in the ring acts like a
-	  bridge for HSR frames, but filters frames that have been forwarded
-	  earlier.
+	  For DANP, it must be connected as a node connecting to two
+	  separate networks over the two slave interfaces. Like HSR, Ethernet
+	  frames sent over the prp device will be sent to both networks giving
+	  a redundant, instant fail-over network. Unlike HSR, PRP networks
+	  can have Singly Attached Nodes (SAN) such as PC, printer, bridges
+	  etc and will be able to communicate with DANP nodes.
 
 	  This code is a "best effort" to comply with the HSR standard as
 	  described in IEC 62439-3:2010 (HSRv0) and IEC 62439-3:2012 (HSRv1),
-	  but no compliancy tests have been made. Use iproute2 to select
-	  the version you desire.
+	  and PRP standard described in IEC 62439-4:2012 (PRP), but no
+	  compliancy tests have been made. Use iproute2 to select the protocol
+	  you would like to use.
 
 	  You need to perform any and all necessary tests yourself before
 	  relying on this code in a safety critical system!
diff --git a/net/hsr/hsr_debugfs.c b/net/hsr/hsr_debugfs.c
index 9787ef11ca71..c1932c0a15be 100644
--- a/net/hsr/hsr_debugfs.c
+++ b/net/hsr/hsr_debugfs.c
@@ -1,5 +1,5 @@
 /*
- * hsr_debugfs code
+ * debugfs code for HSR & PRP
  * Copyright (C) 2019 Texas Instruments Incorporated
  *
  * Author(s):
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 8a927b647829..40ac45123a62 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -3,9 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
- *
  * This file contains device methods for creating, using and destroying
- * virtual HSR devices.
+ * virtual HSR or PRP devices.
  */
 
 #include <linux/netdevice.h>
@@ -427,6 +426,10 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 
 	ether_addr_copy(hsr_dev->dev_addr, slave[0]->dev_addr);
 
+	/* currently PRP is not supported */
+	if (protocol_version == PRP_V1)
+		return -EPROTONOSUPPORT;
+
 	/* Make sure we recognize frames from ourselves in hsr_rcv() */
 	res = hsr_create_self_node(hsr, hsr_dev->dev_addr,
 				   slave[1]->dev_addr);
diff --git a/net/hsr/hsr_device.h b/net/hsr/hsr_device.h
index b8f9262ed101..868373822ee4 100644
--- a/net/hsr/hsr_device.h
+++ b/net/hsr/hsr_device.h
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * include file for HSR and PRP.
  */
 
 #ifndef __HSR_DEVICE_H
diff --git a/net/hsr/hsr_forward.c b/net/hsr/hsr_forward.c
index 1ea17752fffc..2f29ebc85eda 100644
--- a/net/hsr/hsr_forward.c
+++ b/net/hsr/hsr_forward.c
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * Frame router for HSR and PRP.
  */
 
 #include "hsr_forward.h"
diff --git a/net/hsr/hsr_forward.h b/net/hsr/hsr_forward.h
index 51a69295566c..b2a6fa319d94 100644
--- a/net/hsr/hsr_forward.h
+++ b/net/hsr/hsr_forward.h
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * include file for HSR and PRP.
  */
 
 #ifndef __HSR_FORWARD_H
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 530de24b1fb5..13b2190e6556 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -8,6 +8,7 @@
  * interface. A frame is identified by its source MAC address and its HSR
  * sequence number. This code keeps track of senders and their sequence numbers
  * to allow filtering of duplicate frames, and to detect HSR ring errors.
+ * Same code handles filtering of duplicates for PRP as well.
  */
 
 #include <linux/if_ether.h>
diff --git a/net/hsr/hsr_framereg.h b/net/hsr/hsr_framereg.h
index 0f0fa12b4329..c06447780d05 100644
--- a/net/hsr/hsr_framereg.h
+++ b/net/hsr/hsr_framereg.h
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * include file for HSR and PRP.
  */
 
 #ifndef __HSR_FRAMEREG_H
diff --git a/net/hsr/hsr_main.c b/net/hsr/hsr_main.c
index 144da15f0a81..2fd1976e5b1c 100644
--- a/net/hsr/hsr_main.c
+++ b/net/hsr/hsr_main.c
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * Event handling for HSR and PRP devices.
  */
 
 #include <linux/netdevice.h>
diff --git a/net/hsr/hsr_main.h b/net/hsr/hsr_main.h
index f74193465bf5..8cf10d67d5f9 100644
--- a/net/hsr/hsr_main.h
+++ b/net/hsr/hsr_main.h
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * include file for HSR and PRP.
  */
 
 #ifndef __HSR_PRIVATE_H
@@ -131,6 +133,13 @@ struct hsr_port {
 	enum hsr_port_type	type;
 };
 
+/* used by driver internally to differentiate various protocols */
+enum hsr_version {
+	HSR_V0 = 0,
+	HSR_V1,
+	PRP_V1,
+};
+
 struct hsr_priv {
 	struct rcu_head		rcu_head;
 	struct list_head	ports;
@@ -141,7 +150,7 @@ struct hsr_priv {
 	int announce_count;
 	u16 sequence_nr;
 	u16 sup_sequence_nr;	/* For HSRv1 separate seq_nr for supervision */
-	u8 prot_version;	/* Indicate if HSRv0 or HSRv1. */
+	enum hsr_version prot_version;	/* Indicate if HSRv0, HSRv1 or PRPv1 */
 	spinlock_t seqnr_lock;	/* locking for sequence_nr */
 	spinlock_t list_lock;	/* locking for node list */
 	unsigned char		sup_multicast_addr[ETH_ALEN];
diff --git a/net/hsr/hsr_netlink.c b/net/hsr/hsr_netlink.c
index 6e14b7d22639..06c3cd988760 100644
--- a/net/hsr/hsr_netlink.c
+++ b/net/hsr/hsr_netlink.c
@@ -4,7 +4,7 @@
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
  *
- * Routines for handling Netlink messages for HSR.
+ * Routines for handling Netlink messages for HSR and PRP.
  */
 
 #include "hsr_netlink.h"
@@ -22,6 +22,7 @@ static const struct nla_policy hsr_policy[IFLA_HSR_MAX + 1] = {
 	[IFLA_HSR_VERSION]	= { .type = NLA_U8 },
 	[IFLA_HSR_SUPERVISION_ADDR]	= { .len = ETH_ALEN },
 	[IFLA_HSR_SEQ_NR]		= { .type = NLA_U16 },
+	[IFLA_HSR_PROTOCOL]		= { .type = NLA_U8 },
 };
 
 /* Here, it seems a netdevice has already been allocated for us, and the
@@ -31,8 +32,10 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
 		       struct nlattr *tb[], struct nlattr *data[],
 		       struct netlink_ext_ack *extack)
 {
+	enum hsr_version proto_version;
+	unsigned char multicast_spec;
+	u8 proto = HSR_PROTOCOL_HSR;
 	struct net_device *link[2];
-	unsigned char multicast_spec, hsr_version;
 
 	if (!data) {
 		NL_SET_ERR_MSG_MOD(extack, "No slave devices specified");
@@ -69,18 +72,34 @@ static int hsr_newlink(struct net *src_net, struct net_device *dev,
 	else
 		multicast_spec = nla_get_u8(data[IFLA_HSR_MULTICAST_SPEC]);
 
+	if (data[IFLA_HSR_PROTOCOL])
+		proto = nla_get_u8(data[IFLA_HSR_PROTOCOL]);
+
+	if (proto >= HSR_PROTOCOL_MAX) {
+		NL_SET_ERR_MSG_MOD(extack, "Unsupported protocol\n");
+		return -EINVAL;
+	}
+
 	if (!data[IFLA_HSR_VERSION]) {
-		hsr_version = 0;
+		proto_version = HSR_V0;
 	} else {
-		hsr_version = nla_get_u8(data[IFLA_HSR_VERSION]);
-		if (hsr_version > 1) {
+		if (proto == HSR_PROTOCOL_PRP) {
+			NL_SET_ERR_MSG_MOD(extack, "PRP version unsupported\n");
+			return -EINVAL;
+		}
+
+		proto_version = nla_get_u8(data[IFLA_HSR_VERSION]);
+		if (proto_version > HSR_V1) {
 			NL_SET_ERR_MSG_MOD(extack,
-					   "Only versions 0..1 are supported");
+					   "Only HSR version 0/1 supported\n");
 			return -EINVAL;
 		}
 	}
 
-	return hsr_dev_finalize(dev, link, multicast_spec, hsr_version, extack);
+	if (proto == HSR_PROTOCOL_PRP)
+		proto_version = PRP_V1;
+
+	return hsr_dev_finalize(dev, link, multicast_spec, proto_version, extack);
 }
 
 static void hsr_dellink(struct net_device *dev, struct list_head *head)
@@ -102,6 +121,7 @@ static void hsr_dellink(struct net_device *dev, struct list_head *head)
 static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
 {
 	struct hsr_priv *hsr = netdev_priv(dev);
+	u8 proto = HSR_PROTOCOL_HSR;
 	struct hsr_port *port;
 
 	port = hsr_port_get_hsr(hsr, HSR_PT_SLAVE_A);
@@ -120,6 +140,10 @@ static int hsr_fill_info(struct sk_buff *skb, const struct net_device *dev)
 		    hsr->sup_multicast_addr) ||
 	    nla_put_u16(skb, IFLA_HSR_SEQ_NR, hsr->sequence_nr))
 		goto nla_put_failure;
+	if (hsr->prot_version == PRP_V1)
+		proto = HSR_PROTOCOL_PRP;
+	if (nla_put_u8(skb, IFLA_HSR_PROTOCOL, proto))
+		goto nla_put_failure;
 
 	return 0;
 
diff --git a/net/hsr/hsr_netlink.h b/net/hsr/hsr_netlink.h
index 1121bb192a18..501552d9753b 100644
--- a/net/hsr/hsr_netlink.h
+++ b/net/hsr/hsr_netlink.h
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * include file for HSR and PRP.
  */
 
 #ifndef __HSR_NETLINK_H
diff --git a/net/hsr/hsr_slave.c b/net/hsr/hsr_slave.c
index 25b6ffba26cd..b5c0834de338 100644
--- a/net/hsr/hsr_slave.c
+++ b/net/hsr/hsr_slave.c
@@ -3,6 +3,8 @@
  *
  * Author(s):
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * Frame handler other utility functions for HSR and PRP.
  */
 
 #include "hsr_slave.h"
diff --git a/net/hsr/hsr_slave.h b/net/hsr/hsr_slave.h
index 8953ea279ce9..9708a4f0ec09 100644
--- a/net/hsr/hsr_slave.h
+++ b/net/hsr/hsr_slave.h
@@ -2,6 +2,8 @@
 /* Copyright 2011-2014 Autronica Fire and Security AS
  *
  *	2011-2014 Arvid Brodin, arvid.brodin@alten.se
+ *
+ * include file for HSR and PRP.
  */
 
 #ifndef __HSR_SLAVE_H
