diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h
index 1a90dc2d9c3a2d48b39cacd65412872b688d85dd..f2839127955535556d9be32c4903c1db2a4071fe 100644
--- a/drivers/staging/greybus/greybus_protocols.h
+++ b/drivers/staging/greybus/greybus_protocols.h
@@ -195,6 +195,9 @@ struct gb_control_interface_version_response {
 /* request to control the CSI transmitter */
 #define GB_APB_REQUEST_AUDIO_CONTROL	0x09
 
+/* vendor requests to enable/disable FCT tokens flow */
+#define GB_APB_REQUEST_FCT_FLOW_EN	0x0b
+#define GB_APB_REQUEST_FCT_FLOW_DIS	0x0c
 
 /* Firmware Protocol */