diff --git a/include/uapi/sound/compress_offload.h b/include/uapi/sound/compress_offload.h
index 55ca5593a51a..8461cb89906b 100644
--- a/include/uapi/sound/compress_offload.h
+++ b/include/uapi/sound/compress_offload.h
@@ -142,6 +142,8 @@ struct snd_compr_audio_info {
 enum sndrv_compress_encoder {
 	SNDRV_COMPRESS_ENCODER_PADDING = 1,
 	SNDRV_COMPRESS_ENCODER_DELAY = 2,
+	SNDRV_COMPRESS_MIN_BLK_SIZE = 3,
+	SNDRV_COMPRESS_MAX_BLK_SIZE = 4,
 };
 
 /**