diff --git a/include/uapi/linux/cec.h b/include/uapi/linux/cec.h
index 75bc9e4e0350..81a05c9c0706 100644
--- a/include/uapi/linux/cec.h
+++ b/include/uapi/linux/cec.h
@@ -742,7 +742,7 @@ struct cec_event {
 #define CEC_OP_PRIM_DEVTYPE_PROCESSOR			7
 
 #define CEC_MSG_SET_MENU_LANGUAGE			0x32
-#define CEC_MSG_REPORT_FEATURES				0xa6	/* HDMI 2.0 */
+#define CEC_MSG_REPORT_FEATURES				0xa6	/* CEC 2.0 */
 /* All Device Types Operand (all_device_types) */
 #define CEC_OP_ALL_DEVTYPE_TV				0x80
 #define CEC_OP_ALL_DEVTYPE_RECORD			0x40
@@ -777,7 +777,7 @@ struct cec_event {
 #define CEC_OP_FEAT_DEV_SOURCE_HAS_ARC_RX		0x02
 #define CEC_OP_FEAT_DEV_HAS_SET_AUDIO_VOLUME_LEVEL	0x01
 
-#define CEC_MSG_GIVE_FEATURES				0xa5	/* HDMI 2.0 */
+#define CEC_MSG_GIVE_FEATURES				0xa5	/* CEC 2.0 */
 
 
 /* Deck Control Feature */
@@ -1067,7 +1067,7 @@ struct cec_event {
 #define CEC_OP_AUD_FMT_ID_CEA861			0
 #define CEC_OP_AUD_FMT_ID_CEA861_CXT			1
 
-#define CEC_MSG_SET_AUDIO_VOLUME_LEVEL			0x73
+#define CEC_MSG_SET_AUDIO_VOLUME_LEVEL			0x73	/* CEC 2.0 */
 
 /* Audio Rate Control Feature */
 #define CEC_MSG_SET_AUDIO_RATE				0x9a
@@ -1091,7 +1091,6 @@ struct cec_event {
 
 
 /* Dynamic Audio Lipsync Feature */
-/* Only for CEC 2.0 and up */
 #define CEC_MSG_REQUEST_CURRENT_LATENCY			0xa7
 #define CEC_MSG_REPORT_CURRENT_LATENCY			0xa8
 /* Low Latency Mode Operand (low_latency_mode) */
@@ -1105,9 +1104,9 @@ struct cec_event {
 
 
 /* Latency Indication Protocol Feature */
-#define CEC_MSG_REQUEST_LIP_SUPPORT			0x50
-#define CEC_MSG_REPORT_LIP_SUPPORT			0x51
-#define CEC_MSG_REQUEST_AUDIO_AND_VIDEO_LATENCY		0x52
+#define CEC_MSG_REQUEST_LIP_SUPPORT			0x50	/* CEC 2.0 */
+#define CEC_MSG_REPORT_LIP_SUPPORT			0x51	/* CEC 2.0 */
+#define CEC_MSG_REQUEST_AUDIO_AND_VIDEO_LATENCY		0x52	/* CEC 2.0 */
 /* HDR Format Operand (hdr_format) */
 #define CEC_OP_HDR_FORMAT_GAMMA_SDR			0
 #define CEC_OP_HDR_FORMAT_GAMMA_HDR			1
@@ -1120,12 +1119,12 @@ struct cec_event {
 #define CEC_OP_HDR_FORMAT_DV_SOURCE_LED			17
 #define CEC_OP_HDR_FORMAT_HDR10PLUS			24
 #define CEC_OP_HDR_FORMAT_ETSI_TS_103_433		32
-#define CEC_MSG_REPORT_AUDIO_AND_VIDEO_LATENCY		0x53
-#define CEC_MSG_REQUEST_AUDIO_LATENCY			0x54
-#define CEC_MSG_REPORT_AUDIO_LATENCY			0x55
-#define CEC_MSG_REQUEST_VIDEO_LATENCY			0x56
-#define CEC_MSG_REPORT_VIDEO_LATENCY			0x57
-#define CEC_MSG_UPDATE_SQID				0x58
+#define CEC_MSG_REPORT_AUDIO_AND_VIDEO_LATENCY		0x53	/* CEC 2.0 */
+#define CEC_MSG_REQUEST_AUDIO_LATENCY			0x54	/* CEC 2.0 */
+#define CEC_MSG_REPORT_AUDIO_LATENCY			0x55	/* CEC 2.0 */
+#define CEC_MSG_REQUEST_VIDEO_LATENCY			0x56	/* CEC 2.0 */
+#define CEC_MSG_REPORT_VIDEO_LATENCY			0x57	/* CEC 2.0 */
+#define CEC_MSG_UPDATE_SQID				0x58	/* CEC 2.0 */
 
 
 /* Capability Discovery and Control Feature */