diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c
index 28b8c5c5c8c7..1bcf8b8f9713 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.c
@@ -7,3 +7,79 @@ bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev)
 {
 	return (ioread32be(&dev->iseg->initializing) >> MLX5_ECPU_BIT_NUM) & 1;
 }
+
+static int mlx5_peer_pf_enable_hca(struct mlx5_core_dev *dev)
+{
+	u32 out[MLX5_ST_SZ_DW(enable_hca_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(enable_hca_in)]   = {};
+
+	MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
+	MLX5_SET(enable_hca_in, in, function_id, 0);
+	MLX5_SET(enable_hca_in, in, embedded_cpu_function, 0);
+	return mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
+}
+
+static int mlx5_peer_pf_disable_hca(struct mlx5_core_dev *dev)
+{
+	u32 out[MLX5_ST_SZ_DW(disable_hca_out)] = {};
+	u32 in[MLX5_ST_SZ_DW(disable_hca_in)]   = {};
+
+	MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
+	MLX5_SET(disable_hca_in, in, function_id, 0);
+	MLX5_SET(enable_hca_in, in, embedded_cpu_function, 0);
+	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
+}
+
+static int mlx5_peer_pf_init(struct mlx5_core_dev *dev)
+{
+	int err;
+
+	err = mlx5_peer_pf_enable_hca(dev);
+	if (err)
+		mlx5_core_err(dev, "Failed to enable peer PF HCA err(%d)\n",
+			      err);
+
+	return err;
+}
+
+static void mlx5_peer_pf_cleanup(struct mlx5_core_dev *dev)
+{
+	int err;
+
+	err = mlx5_peer_pf_disable_hca(dev);
+	if (err) {
+		mlx5_core_err(dev, "Failed to disable peer PF HCA err(%d)\n",
+			      err);
+		return;
+	}
+
+	err = mlx5_wait_for_pages(dev, &dev->priv.peer_pf_pages);
+	if (err)
+		mlx5_core_warn(dev, "Timeout reclaiming peer PF pages err(%d)\n",
+			       err);
+}
+
+int mlx5_ec_init(struct mlx5_core_dev *dev)
+{
+	int err = 0;
+
+	if (!mlx5_core_is_ecpf(dev))
+		return 0;
+
+	/* ECPF shall enable HCA for peer PF in the same way a PF
+	 * does this for its VFs.
+	 */
+	err = mlx5_peer_pf_init(dev);
+	if (err)
+		return err;
+
+	return 0;
+}
+
+void mlx5_ec_cleanup(struct mlx5_core_dev *dev)
+{
+	if (!mlx5_core_is_ecpf(dev))
+		return;
+
+	mlx5_peer_pf_cleanup(dev);
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.h b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.h
index 8b684f0ab48f..d3d7a00a02ac 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ecpf.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ecpf.h
@@ -14,11 +14,15 @@ enum {
 };
 
 bool mlx5_read_embedded_cpu(struct mlx5_core_dev *dev);
+int mlx5_ec_init(struct mlx5_core_dev *dev);
+void mlx5_ec_cleanup(struct mlx5_core_dev *dev);
 
 #else  /* CONFIG_MLX5_ESWITCH */
 
 static inline bool
 mlx5_read_embedded_cpu(struct mlx5_core_dev *dev) { return false; }
+static inline int mlx5_ec_init(struct mlx5_core_dev *dev) { return 0; }
+static inline void mlx5_ec_cleanup(struct mlx5_core_dev *dev) {}
 
 #endif /* CONFIG_MLX5_ESWITCH */
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index bf810fd91454..772dc460cfe6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -615,6 +615,8 @@ int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id)
 
 	MLX5_SET(enable_hca_in, in, opcode, MLX5_CMD_OP_ENABLE_HCA);
 	MLX5_SET(enable_hca_in, in, function_id, func_id);
+	MLX5_SET(enable_hca_in, in, embedded_cpu_function,
+		 dev->caps.embedded_cpu);
 	return mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
 }
 
@@ -625,6 +627,8 @@ int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id)
 
 	MLX5_SET(disable_hca_in, in, opcode, MLX5_CMD_OP_DISABLE_HCA);
 	MLX5_SET(disable_hca_in, in, function_id, func_id);
+	MLX5_SET(enable_hca_in, in, embedded_cpu_function,
+		 dev->caps.embedded_cpu);
 	return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
 }
 
@@ -1074,6 +1078,12 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
 		goto err_sriov;
 	}
 
+	err = mlx5_ec_init(dev);
+	if (err) {
+		dev_err(&pdev->dev, "Failed to init embedded CPU\n");
+		goto err_ec;
+	}
+
 	if (mlx5_device_registered(dev)) {
 		mlx5_attach_device(dev);
 	} else {
@@ -1091,6 +1101,9 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
 	return 0;
 
 err_reg_dev:
+	mlx5_ec_cleanup(dev);
+
+err_ec:
 	mlx5_sriov_detach(dev);
 
 err_sriov:
@@ -1165,6 +1178,7 @@ static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv,
 	if (mlx5_device_registered(dev))
 		mlx5_detach_device(dev);
 
+	mlx5_ec_cleanup(dev);
 	mlx5_sriov_detach(dev);
 	mlx5_cleanup_fs(dev);
 	mlx5_accel_ipsec_cleanup(dev);
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 46799b4c8859..1b6d5a563a3a 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -6061,7 +6061,8 @@ struct mlx5_ifc_enable_hca_in_bits {
 	u8         reserved_at_20[0x10];
 	u8         op_mod[0x10];
 
-	u8         reserved_at_40[0x10];
+	u8         embedded_cpu_function[0x1];
+	u8         reserved_at_41[0xf];
 	u8         function_id[0x10];
 
 	u8         reserved_at_60[0x20];
@@ -6105,7 +6106,8 @@ struct mlx5_ifc_disable_hca_in_bits {
 	u8         reserved_at_20[0x10];
 	u8         op_mod[0x10];
 
-	u8         reserved_at_40[0x10];
+	u8         embedded_cpu_function[0x1];
+	u8         reserved_at_41[0xf];
 	u8         function_id[0x10];
 
 	u8         reserved_at_60[0x20];
