diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
index 9f7708d6b733..a449c00c3800 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-codec.rst
@@ -4489,3 +4489,21 @@ enum v4l2_mpeg_video_hevc_size_of_length_field -
     so this has to come from client.
     This is applicable to H264 and valid Range is from 0 to 63.
     Source Rec. ITU-T H.264 (06/2019); G.7.4.1.1, G.8.8.1.
+
+``V4L2_CID_MPEG_VIDEO_LTR_COUNT (integer)``
+    Specifies the maximum number of Long Term Reference (LTR) frames at any
+    given time that the encoder can keep.
+    This is applicable to the H264 and HEVC encoders.
+
+``V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX (integer)``
+    After setting this control the frame that will be queued next
+    will be marked as a Long Term Reference (LTR) frame
+    and given this LTR index which ranges from 0 to LTR_COUNT-1.
+    This is applicable to the H264 and HEVC encoders.
+    Source Rec. ITU-T H.264 (06/2019); Table 7.9
+
+``V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES (bitmask)``
+    Specifies the Long Term Reference (LTR) frame(s) to be used for
+    encoding the next frame queued after setting this control.
+    This provides a bitmask which consists of bits [0, LTR_COUNT-1].
+    This is applicable to the H264 and HEVC encoders.
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index c7f040daa94d..1469cae136b5 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -969,6 +969,9 @@ const char *v4l2_ctrl_get_name(u32 id)
 	case V4L2_CID_MPEG_VIDEO_REPEAT_SEQ_HEADER:		return "Repeat Sequence Header";
 	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:		return "Force Key Frame";
 	case V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID:		return "Base Layer Priority ID";
+	case V4L2_CID_MPEG_VIDEO_LTR_COUNT:			return "LTR Count";
+	case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:		return "Frame LTR Index";
+	case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:		return "Use LTR Frames";
 	case V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS:		return "MPEG-2 Slice Parameters";
 	case V4L2_CID_MPEG_VIDEO_MPEG2_QUANTIZATION:		return "MPEG-2 Quantization Matrices";
 	case V4L2_CID_MPEG_VIDEO_FWHT_PARAMS:			return "FWHT Stateless Parameters";
@@ -1287,6 +1290,17 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type,
 	case V4L2_CID_MPEG_VIDEO_DEC_DISPLAY_DELAY:
 		*type = V4L2_CTRL_TYPE_INTEGER;
 		break;
+	case V4L2_CID_MPEG_VIDEO_LTR_COUNT:
+		*type = V4L2_CTRL_TYPE_INTEGER;
+		break;
+	case V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX:
+		*type = V4L2_CTRL_TYPE_INTEGER;
+		*flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+		break;
+	case V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES:
+		*type = V4L2_CTRL_TYPE_BITMASK;
+		*flags |= V4L2_CTRL_FLAG_EXECUTE_ON_WRITE;
+		break;
 	case V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME:
 	case V4L2_CID_PAN_RESET:
 	case V4L2_CID_TILT_RESET:
diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h
index 8bb49020ad17..af9e9fd61813 100644
--- a/include/uapi/linux/v4l2-controls.h
+++ b/include/uapi/linux/v4l2-controls.h
@@ -417,6 +417,9 @@ enum v4l2_mpeg_video_multi_slice_mode {
 #define V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME		(V4L2_CID_MPEG_BASE+229)
 #define V4L2_CID_MPEG_VIDEO_BASELAYER_PRIORITY_ID	(V4L2_CID_MPEG_BASE+230)
 #define V4L2_CID_MPEG_VIDEO_AU_DELIMITER		(V4L2_CID_MPEG_BASE+231)
+#define V4L2_CID_MPEG_VIDEO_LTR_COUNT			(V4L2_CID_MPEG_BASE+232)
+#define V4L2_CID_MPEG_VIDEO_FRAME_LTR_INDEX		(V4L2_CID_MPEG_BASE+233)
+#define V4L2_CID_MPEG_VIDEO_USE_LTR_FRAMES		(V4L2_CID_MPEG_BASE+234)
 
 /* CIDs for the MPEG-2 Part 2 (H.262) codec */
 #define V4L2_CID_MPEG_VIDEO_MPEG2_LEVEL			(V4L2_CID_MPEG_BASE+270)