diff --git a/spa/include/spa/param/profiler.h b/spa/include/spa/param/profiler.h
index c3d117a08..d08bd082b 100644
--- a/spa/include/spa/param/profiler.h
+++ b/spa/include/spa/param/profiler.h
@@ -36,13 +36,44 @@ enum spa_profiler {
 	SPA_PROFILER_START,
 
 	SPA_PROFILER_START_Driver	= 0x10000,	/**< driver related profiler properties */
-	SPA_PROFILER_info,				/**< Generic info, counter and CPU load */
-	SPA_PROFILER_clock,				/**< clock information */
-	SPA_PROFILER_driverBlock,			/**< generic driver info block */
+	SPA_PROFILER_info,				/**< Generic info, counter and CPU load,
+							  * (Struct(
+							  *      Long : counter,
+							  *      Float : cpu_load fast,
+							  *      Float : cpu_load medium,
+							  *      Float : cpu_load slow))  */
+	SPA_PROFILER_clock,				/**< clock information
+							  *  (Struct(
+							  *      Int : clock flags,
+							  *      Int : clock id,
+							  *      String: clock name,
+							  *      Long : clock nsec,
+							  *      Fraction : clock rate,
+							  *      Long : clock position,
+							  *      Long : clock duration,
+							  *      Long : clock delay,
+							  *      Double : clock rate_diff,
+							  *      Long : clock next_nsec)) */
+	SPA_PROFILER_driverBlock,			/**< generic driver info block
+							  *  (Struct(
+							  *      Int : driver_id,
+							  *      String : name,
+							  *      Long : driver prev_signal,
+							  *      Long : driver signal,
+							  *      Long : driver awake,
+							  *      Long : driver finish,
+							  *      Int : driver status)) */
 
 	SPA_PROFILER_START_Follower	= 0x20000,	/**< follower related profiler properties */
-	SPA_PROFILER_followerBlock,			/**< generic follower info block */
-
+	SPA_PROFILER_followerBlock,			/**< generic follower info block
+							  *  (Struct(
+							  *      Int : id,
+							  *      String : name,
+							  *      Long : prev_signal,
+							  *      Long : signal,
+							  *      Long : awake,
+							  *      Long : finish,
+							  *      Int : status)) */
 	SPA_PROFILER_START_CUSTOM	= 0x1000000,
 };