diff --git a/audio/common/all-versions/default/service/Android.mk b/audio/common/all-versions/default/service/Android.mk
index 32110ee..58987c7 100644
--- a/audio/common/all-versions/default/service/Android.mk
+++ b/audio/common/all-versions/default/service/Android.mk
@@ -50,7 +50,8 @@
     android.hardware.audio.effect@5.0 \
     android.hardware.bluetooth.a2dp@1.0 \
     android.hardware.soundtrigger@2.0 \
-    android.hardware.soundtrigger@2.1
+    android.hardware.soundtrigger@2.1 \
+    android.hardware.soundtrigger@2.2
 
 # Can not switch to Android.bp until AUDIOSERVER_MULTILIB
 # is deprecated as build config variable are not supported
diff --git a/audio/common/all-versions/default/service/service.cpp b/audio/common/all-versions/default/service/service.cpp
index 7b5da81..15ce5e0 100644
--- a/audio/common/all-versions/default/service/service.cpp
+++ b/audio/common/all-versions/default/service/service.cpp
@@ -25,6 +25,7 @@
 #include <android/hardware/bluetooth/a2dp/1.0/IBluetoothAudioOffload.h>
 #include <android/hardware/soundtrigger/2.0/ISoundTriggerHw.h>
 #include <android/hardware/soundtrigger/2.1/ISoundTriggerHw.h>
+#include <android/hardware/soundtrigger/2.2/ISoundTriggerHw.h>
 #include <binder/ProcessState.h>
 #include <cutils/properties.h>
 #include <hidl/HidlTransportSupport.h>
@@ -58,9 +59,10 @@
            registerPassthroughServiceImplementation<audio::effect::V2_0::IEffectsFactory>() != OK,
     LOG_ALWAYS_FATAL_IF(fail, "Could not register audio effect API 2, 4 nor 5");
 
-    fail = registerPassthroughServiceImplementation<soundtrigger::V2_1::ISoundTriggerHw>() != OK &&
+    fail = registerPassthroughServiceImplementation<soundtrigger::V2_2::ISoundTriggerHw>() != OK &&
+           registerPassthroughServiceImplementation<soundtrigger::V2_1::ISoundTriggerHw>() != OK &&
            registerPassthroughServiceImplementation<soundtrigger::V2_0::ISoundTriggerHw>() != OK,
-    ALOGW_IF(fail, "Could not register soundtrigger API 2.0 nor 2.1");
+    ALOGW_IF(fail, "Could not register soundtrigger API 2.0, 2.1 nor 2.2");
 
     fail =
         registerPassthroughServiceImplementation<bluetooth::a2dp::V1_0::IBluetoothAudioOffload>() !=
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index e1c5bac..049dfa4 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -393,7 +393,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.soundtrigger</name>
-        <version>2.0-1</version>
+        <version>2.0-2</version>
         <interface>
             <name>ISoundTriggerHw</name>
             <instance>default</instance>
diff --git a/neuralnetworks/1.2/IDevice.hal b/neuralnetworks/1.2/IDevice.hal
index 6a77961..6c3b483 100644
--- a/neuralnetworks/1.2/IDevice.hal
+++ b/neuralnetworks/1.2/IDevice.hal
@@ -56,6 +56,26 @@
     getVersionString() generates (ErrorStatus status, string version);
 
     /**
+     * Get the type of a given device.
+     *
+     * The device type can be used to help application developers to distribute
+     * Machine Learning workloads and other workloads such as graphical rendering.
+     * E.g., for an app which renders AR scenes based on real time object detection
+     * results, the developer could choose an ACCELERATOR type device for ML
+     * workloads, and reserve GPU for graphical rendering.
+     *
+     * @param status Error status returned from querying the device type. Must be:
+     *               - NONE if the query was successful
+     *               - DEVICE_UNAVAILABLE if driver is offline or busy
+     *               - GENERAL_FAILURE if the query resulted in an
+     *                 unspecified error
+     * @param type The DeviceType of the device. Please note, this is not a
+     *             bitfield of DeviceTypes. Each device must only be of a
+     *             single DeviceType.
+     */
+    getType() generates (ErrorStatus status, DeviceType type);
+
+    /**
      * Gets the supported operations in a model.
      *
      * getSupportedOperations indicates which operations of a model are fully
diff --git a/neuralnetworks/1.2/types.hal b/neuralnetworks/1.2/types.hal
index b072793..564cd8c 100644
--- a/neuralnetworks/1.2/types.hal
+++ b/neuralnetworks/1.2/types.hal
@@ -180,6 +180,26 @@
 };
 
 /**
+ * Device types.
+ *
+ * The type of NNAPI device.
+ */
+enum DeviceType : int32_t {
+    // Leaving 0 unused as it means unknown type in NDK NNAPI. There is no
+    // HAL equivalent of unknown type and a 1.2 HAL implementation must belong
+    // to one of the categories below.
+    /** The device does not fall into any category below. */
+    OTHER             = 1,
+    /** The device runs NNAPI models on single or multi-core CPU. */
+    CPU               = 2,
+    /** The device can run NNAPI models and also accelerate graphics APIs such
+      * as OpenGL ES and Vulkan. */
+    GPU               = 3,
+    /** Dedicated accelerator for Machine Learning workloads. */
+    ACCELERATOR       = 4,
+};
+
+/**
  * Describes one operation of the model's graph.
  */
 struct Operation {
diff --git a/neuralnetworks/1.2/vts/functional/BasicTests.cpp b/neuralnetworks/1.2/vts/functional/BasicTests.cpp
index eb3ebd3..8c3ad15 100644
--- a/neuralnetworks/1.2/vts/functional/BasicTests.cpp
+++ b/neuralnetworks/1.2/vts/functional/BasicTests.cpp
@@ -45,6 +45,16 @@
     });
     EXPECT_TRUE(ret.isOk());
 }
+
+// device type test
+TEST_F(NeuralnetworksHidlTest, GetDeviceTypeTest) {
+    Return<void> ret = device->getType([](ErrorStatus status, DeviceType type) {
+        EXPECT_EQ(ErrorStatus::NONE, status);
+        EXPECT_TRUE(type == DeviceType::OTHER || type == DeviceType::CPU ||
+                    type == DeviceType::GPU || type == DeviceType::ACCELERATOR);
+    });
+    EXPECT_TRUE(ret.isOk());
+}
 }  // namespace functional
 }  // namespace vts
 }  // namespace V1_2
diff --git a/soundtrigger/2.2/default/SoundTriggerHw.cpp b/soundtrigger/2.2/default/SoundTriggerHw.cpp
index 3cf72c8..4586544 100644
--- a/soundtrigger/2.2/default/SoundTriggerHw.cpp
+++ b/soundtrigger/2.2/default/SoundTriggerHw.cpp
@@ -704,6 +704,11 @@
         }
     }
 
+    if (mHwDevice->common.version < SOUND_TRIGGER_DEVICE_API_VERSION_1_2) {
+        ALOGE("Get model state not supported");
+        return -ENODEV;
+    }
+
     if (mHwDevice->get_model_state == NULL) {
         ALOGE("Failed to get model state from device, no such method");
         return -ENODEV;