diff --git a/spa/include/spa/node/command.h b/spa/include/spa/node/command.h
index bf0ee1ba4..9bf50fb5e 100644
--- a/spa/include/spa/node/command.h
+++ b/spa/include/spa/node/command.h
@@ -54,6 +54,8 @@ enum spa_node_command {
 					  *  remain opened, like query formats and then
 					  *  set a format */
 	SPA_NODE_COMMAND_ParamEnd,	/**< end a transaction */
+	SPA_NODE_COMMAND_RequestProcess,/**< Sent to a driver when some other node emitted
+					  *  the RequestProcess event. */
 };
 
 #define SPA_NODE_COMMAND_ID(cmd)	SPA_COMMAND_ID(cmd, SPA_TYPE_COMMAND_Node)
diff --git a/spa/include/spa/node/event.h b/spa/include/spa/node/event.h
index c6c8c1a84..ceb6d6016 100644
--- a/spa/include/spa/node/event.h
+++ b/spa/include/spa/node/event.h
@@ -41,6 +41,8 @@ enum spa_node_event {
 	SPA_NODE_EVENT_Error,
 	SPA_NODE_EVENT_Buffering,
 	SPA_NODE_EVENT_RequestRefresh,
+	SPA_NODE_EVENT_RequestProcess,		/*< Ask the driver to start processing
+						 *  the graph */
 };
 
 #define SPA_NODE_EVENT_ID(ev)	SPA_EVENT_ID(ev, SPA_TYPE_EVENT_Node)
diff --git a/spa/include/spa/node/type-info.h b/spa/include/spa/node/type-info.h
index 6c143c9df..0411a3493 100644
--- a/spa/include/spa/node/type-info.h
+++ b/spa/include/spa/node/type-info.h
@@ -64,6 +64,7 @@ static const struct spa_type_info spa_type_node_event_id[] = {
 	{ SPA_NODE_EVENT_Error,		 SPA_TYPE_Int, SPA_TYPE_INFO_NODE_EVENT_BASE "Error",   NULL },
 	{ SPA_NODE_EVENT_Buffering,	 SPA_TYPE_Int, SPA_TYPE_INFO_NODE_EVENT_BASE "Buffering", NULL },
 	{ SPA_NODE_EVENT_RequestRefresh, SPA_TYPE_Int, SPA_TYPE_INFO_NODE_EVENT_BASE "RequestRefresh", NULL },
+	{ SPA_NODE_EVENT_RequestProcess, SPA_TYPE_Int, SPA_TYPE_INFO_NODE_EVENT_BASE "RequestProcess", NULL },
 	{ 0, 0, NULL, NULL },
 };
 
@@ -86,6 +87,7 @@ static const struct spa_type_info spa_type_node_command_id[] = {
 	{ SPA_NODE_COMMAND_Marker,	SPA_TYPE_Int, SPA_TYPE_INFO_NODE_COMMAND_BASE "Marker",  NULL },
 	{ SPA_NODE_COMMAND_ParamBegin,	SPA_TYPE_Int, SPA_TYPE_INFO_NODE_COMMAND_BASE "ParamBegin",  NULL },
 	{ SPA_NODE_COMMAND_ParamEnd,	SPA_TYPE_Int, SPA_TYPE_INFO_NODE_COMMAND_BASE "ParamEnd",  NULL },
+	{ SPA_NODE_COMMAND_RequestProcess, SPA_TYPE_Int, SPA_TYPE_INFO_NODE_COMMAND_BASE "RequestProcess",  NULL },
 	{ 0, 0, NULL, NULL },
 };