bool odm_combine)
 {}
 
+static void virtual_dig_connect_to_otg(
+               struct stream_encoder *enc,
+               int tg_inst)
+{}
+
+static void virtual_setup_stereo_sync(
+                       struct stream_encoder *enc,
+                       int tg_inst,
+                       bool enable)
+{}
+
 static const struct stream_encoder_funcs virtual_str_enc_funcs = {
        .dp_set_odm_combine =
                virtual_enc_dp_set_odm_combine,
        .audio_mute_control = virtual_audio_mute_control,
        .set_avmute = virtual_stream_encoder_set_avmute,
        .hdmi_reset_stream_attribute = virtual_stream_encoder_reset_hdmi_stream_attribute,
+       .dig_connect_to_otg = virtual_dig_connect_to_otg,
+       .setup_stereo_sync = virtual_setup_stereo_sync,
 };
 
 bool virtual_stream_encoder_construct(