diff --git a/doc/guides/cryptodevs/uadk.rst b/doc/guides/cryptodevs/uadk.rst
index 9af6b88a5a..053622f7bf 100644
--- a/doc/guides/cryptodevs/uadk.rst
+++ b/doc/guides/cryptodevs/uadk.rst
@@ -110,3 +110,30 @@ Test steps
       sudo dpdk-test --vdev=crypto_uadk --log-level=6
       RTE>>cryptodev_uadk_autotest
       RTE>>quit
+
+
+Initialization
+--------------
+
+To use the PMD in an application, user must:
+
+* Call rte_vdev_init("crypto_uadk") within the application.
+
+* Use --vdev="crypto_uadk" in the EAL options, which will call rte_vdev_init() internally.
+
+The following parameters (all optional) can be provided in the previous two calls:
+
+* max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
+  The max value of max_nb_queue_pairs can be queried from the device property available_instances.
+  Property available_instances value may differ from the devices and platforms.
+  Allocating queue pairs bigger than available_instances will fail.
+
+Example:
+
+.. code-block:: console
+
+	cat /sys/class/uacce/hisi_sec2-2/available_instances
+	256
+
+	sudo dpdk-test-crypto-perf -l 0-10 --vdev crypto_uadk,max_nb_queue_pairs=10 \
+		-- --devtype crypto_uadk --optype cipher-only --buffer-sz 8192
diff --git a/drivers/crypto/uadk/uadk_crypto_pmd.c b/drivers/crypto/uadk/uadk_crypto_pmd.c
index 4f729e0f07..824383512e 100644
--- a/drivers/crypto/uadk/uadk_crypto_pmd.c
+++ b/drivers/crypto/uadk/uadk_crypto_pmd.c
@@ -357,8 +357,15 @@ static const struct rte_cryptodev_capabilities uadk_crypto_v2_capabilities[] = {
 /* Configure device */
 static int
 uadk_crypto_pmd_config(struct rte_cryptodev *dev __rte_unused,
-		       struct rte_cryptodev_config *config __rte_unused)
+		       struct rte_cryptodev_config *config)
 {
+	char env[128];
+
+	/* set queue pairs num via env */
+	sprintf(env, "sync:%d@0", config->nb_queue_pairs);
+	setenv("WD_CIPHER_CTX_NUM", env, 1);
+	setenv("WD_DIGEST_CTX_NUM", env, 1);
+
 	return 0;
 }
 
@@ -434,7 +441,7 @@ uadk_crypto_pmd_info_get(struct rte_cryptodev *dev,
 	if (dev_info != NULL) {
 		dev_info->driver_id = dev->driver_id;
 		dev_info->driver_name = dev->device->driver->name;
-		dev_info->max_nb_queue_pairs = 128;
+		dev_info->max_nb_queue_pairs = priv->max_nb_qpairs;
 		/* No limit of number of sessions */
 		dev_info->sym.max_nb_sessions = 0;
 		dev_info->feature_flags = dev->feature_flags;
@@ -1015,6 +1022,7 @@ uadk_cryptodev_probe(struct rte_vdev_device *vdev)
 	struct uadk_crypto_priv *priv;
 	struct rte_cryptodev *dev;
 	struct uacce_dev *udev;
+	const char *input_args;
 	const char *name;
 
 	udev = wd_get_accel_dev("cipher");
@@ -1030,6 +1038,9 @@ uadk_cryptodev_probe(struct rte_vdev_device *vdev)
 	if (name == NULL)
 		return -EINVAL;
 
+	input_args = rte_vdev_device_args(vdev);
+	rte_cryptodev_pmd_parse_input_args(&init_params, input_args);
+
 	dev = rte_cryptodev_pmd_create(name, &vdev->device, &init_params);
 	if (dev == NULL) {
 		UADK_LOG(ERR, "driver %s: create failed", init_params.name);
@@ -1044,6 +1055,7 @@ uadk_cryptodev_probe(struct rte_vdev_device *vdev)
 			     RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO;
 	priv = dev->data->dev_private;
 	priv->version = version;
+	priv->max_nb_qpairs = init_params.max_nb_queue_pairs;
 
 	rte_cryptodev_pmd_probing_finish(dev);
 
@@ -1078,4 +1090,6 @@ static struct cryptodev_driver uadk_crypto_drv;
 RTE_PMD_REGISTER_VDEV(UADK_CRYPTO_DRIVER_NAME, uadk_crypto_pmd);
 RTE_PMD_REGISTER_CRYPTO_DRIVER(uadk_crypto_drv, uadk_crypto_pmd.driver,
 			       uadk_cryptodev_driver_id);
+RTE_PMD_REGISTER_PARAM_STRING(UADK_CRYPTO_DRIVER_NAME,
+			      "max_nb_queue_pairs=<int>");
 RTE_LOG_REGISTER_DEFAULT(uadk_crypto_logtype, INFO);
diff --git a/drivers/crypto/uadk/uadk_crypto_pmd_private.h b/drivers/crypto/uadk/uadk_crypto_pmd_private.h
index 9075f0f058..5a7dbff117 100644
--- a/drivers/crypto/uadk/uadk_crypto_pmd_private.h
+++ b/drivers/crypto/uadk/uadk_crypto_pmd_private.h
@@ -67,6 +67,7 @@ struct uadk_crypto_priv {
 	bool env_cipher_init;
 	bool env_auth_init;
 	enum uadk_crypto_version version;
+	unsigned int max_nb_qpairs;
 } __rte_cache_aligned;
 
 extern int uadk_crypto_logtype;
