diff --git a/src/amd/common/ac_vcn_enc.h b/src/amd/common/ac_vcn_enc.h
index 73f2154387e..589f690f5d7 100644
--- a/src/amd/common/ac_vcn_enc.h
+++ b/src/amd/common/ac_vcn_enc.h
@@ -200,6 +200,8 @@
 #define RENCODE_COLOR_SPACE_YUV                                                     0
 #define RENCODE_COLOR_SPACE_RGB                                                     1
 
+#define RENCODE_VCN4_AV1_MAX_NUM_LTR                                                2
+
 typedef struct rvcn_enc_session_info_s {
    uint32_t interface_version;
    uint32_t sw_context_address_hi;
@@ -611,10 +613,13 @@ typedef struct rvcn_enc_av1_color_description_s
 typedef struct rvcn_enc_av1_ref_frame_s
 {
    bool in_use;
+   bool is_ltr;
    uint32_t frame_id;
    uint32_t temporal_id;
    uint32_t slot_id;
    uint32_t frame_type;
+   uint32_t ltr_seq;
+   void *frame_signature;
 } rvcn_enc_av1_ref_frame_t;
 
 typedef struct rvcn_enc_av1_recon_slot_s
diff --git a/src/gallium/include/pipe/p_video_state.h b/src/gallium/include/pipe/p_video_state.h
index e2b2f9dd434..9f225494260 100644
--- a/src/gallium/include/pipe/p_video_state.h
+++ b/src/gallium/include/pipe/p_video_state.h
@@ -996,6 +996,7 @@ struct pipe_av1_enc_picture_desc
       uint32_t use_superres:1;
       uint32_t reduced_tx_set:1;
       uint32_t skip_mode_present:1;
+      uint32_t long_term_reference:1;
    };
    struct pipe_enc_quality_modes quality_modes;
    struct pipe_enc_intra_refresh intra_refresh;
@@ -1028,6 +1029,9 @@ struct pipe_av1_enc_picture_desc
    uint32_t primary_ref_frame;
    uint8_t refresh_frame_flags;
    uint8_t ref_frame_idx[7];
+   uint32_t ref_frame_ctrl_l0;            /* forward prediction only */
+   void *ref_list[8];                     /* for tracking ref frames */
+   void *recon_frame;
 
    struct {
       uint8_t cdef_damping_minus_3;