diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h
index 736e63bc80c2..97f11ef6e9f0 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_optc.h
@@ -344,5 +344,5 @@ void optc3_set_timing_db_mode(struct timing_generator *optc, bool enable);
 void optc3_set_odm_bypass(struct timing_generator *optc,
 		const struct dc_crtc_timing *dc_crtc_timing);
 void optc3_tg_init(struct timing_generator *optc);
-
+void optc3_set_vtotal_min_max(struct timing_generator *optc, int vtotal_min, int vtotal_max);
 #endif /* __DC_OPTC_DCN30_H__ */