diff --git a/services/audioflinger/FastMixerState.cpp b/services/audioflinger/FastMixerState.cpp
index a8c2634..ad471fb 100644
--- a/services/audioflinger/FastMixerState.cpp
+++ b/services/audioflinger/FastMixerState.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <cutils/properties.h>
 #include "FastMixerState.h"
 
 namespace android {
@@ -33,6 +34,10 @@
     mFastTracksGen(0), mTrackMask(0), mOutputSink(NULL), mOutputSinkGen(0),
     mFrameCount(0), mTeeSink(NULL)
 {
+    int ok = pthread_once(&sMaxFastTracksOnce, sMaxFastTracksInit);
+    if (ok != 0) {
+        ALOGE("%s pthread_once failed: %d", __func__, ok);
+    }
 }
 
 FastMixerState::~FastMixerState()
@@ -40,6 +45,12 @@
 }
 
 // static
+unsigned FastMixerState::sMaxFastTracks = kDefaultFastTracks;
+
+// static
+pthread_once_t FastMixerState::sMaxFastTracksOnce = PTHREAD_ONCE_INIT;
+
+// static
 const char *FastMixerState::commandToString(Command command)
 {
     const char *str = FastThreadState::commandToString(command);
@@ -54,4 +65,18 @@
     LOG_ALWAYS_FATAL("%s", __func__);
 }
 
+// static
+void FastMixerState::sMaxFastTracksInit()
+{
+    char value[PROPERTY_VALUE_MAX];
+    if (property_get("ro.audio.max_fast_tracks", value, NULL) > 0) {
+        char *endptr;
+        unsigned long ul = strtoul(value, &endptr, 0);
+        if (*endptr == '\0' && kMinFastTracks <= ul && ul <= kMaxFastTracks) {
+            sMaxFastTracks = (unsigned) ul;
+        }
+    }
+    ALOGI("sMaxFastTracks = %u", sMaxFastTracks);
+}
+
 }   // namespace android