stream_update->adjust->v_total_min,
                                        stream_update->adjust->v_total_max);
 
-                       if (stream_update->periodic_fn_vsync_delta &&
-                                       pipe_ctx->stream_res.tg->funcs->program_vline_interrupt)
+                       if (stream_update->vline0_config && pipe_ctx->stream_res.tg->funcs->program_vline_interrupt)
                                pipe_ctx->stream_res.tg->funcs->program_vline_interrupt(
-                                       pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing,
-                                       pipe_ctx->stream->periodic_fn_vsync_delta);
+                                       pipe_ctx->stream_res.tg, VLINE0, stream->vline0_config);
+
+                       if (stream_update->vline1_config && pipe_ctx->stream_res.tg->funcs->program_vline_interrupt)
+                               pipe_ctx->stream_res.tg->funcs->program_vline_interrupt(
+                                       pipe_ctx->stream_res.tg, VLINE1, stream->vline1_config);
 
                        if ((stream_update->hdr_static_metadata && !stream->use_dynamic_meta) ||
                                        stream_update->vrr_infopacket ||
 
        bool dummy;
 };
 
+struct vline_config {
+       unsigned int start_line;
+       unsigned int end_line;
+};
+
 struct dc_stream_state {
        // sink is deprecated, new code should not reference
        // this pointer
        uint8_t qs_bit;
        uint8_t qy_bit;
 
-       unsigned long long periodic_fn_vsync_delta;
-
        /* TODO: custom INFO packets */
        /* TODO: ABM info (DMCU) */
        /* PSR info */
        /* DMCU info */
        unsigned int abm_level;
 
+       struct vline_config vline0_config;
+       struct vline_config vline1_config;
+
        /* from core_stream struct */
        struct dc_context *ctx;
 
        struct dc_info_packet *hdr_static_metadata;
        unsigned int *abm_level;
 
-       unsigned long long *periodic_fn_vsync_delta;
+       struct vline_config *vline0_config;
+       struct vline_config *vline1_config;
+
        struct dc_crtc_timing_adjust *adjust;
        struct dc_info_packet *vrr_infopacket;
        struct dc_info_packet *vsc_infopacket;
 
                OTG_3D_STRUCTURE_STEREO_SEL_OVR, 0);
 }
 
-static uint32_t get_start_vline(struct timing_generator *optc, const struct dc_crtc_timing *dc_crtc_timing)
-{
-       struct dc_crtc_timing patched_crtc_timing;
-       int vesa_sync_start;
-       int asic_blank_end;
-       int vertical_line_start;
-
-       patched_crtc_timing = *dc_crtc_timing;
-       optc1_apply_front_porch_workaround(optc, &patched_crtc_timing);
-
-       vesa_sync_start = patched_crtc_timing.v_addressable +
-                       patched_crtc_timing.v_border_bottom +
-                       patched_crtc_timing.v_front_porch;
-
-       asic_blank_end = (patched_crtc_timing.v_total -
-                       vesa_sync_start -
-                       patched_crtc_timing.v_border_top);
-
-       vertical_line_start = asic_blank_end - optc->dlg_otg_param.vstartup_start + 1;
-       if (vertical_line_start < 0)
-               vertical_line_start = 0;
-
-       return vertical_line_start;
-}
-
 void optc1_program_vline_interrupt(
                struct timing_generator *optc,
-               const struct dc_crtc_timing *dc_crtc_timing,
-               unsigned long long vsync_delta)
+               enum vline_select vline,
+               struct vline_config vline_config)
 {
-
        struct optc *optc1 = DCN10TG_FROM_TG(optc);
 
-       unsigned long long req_delta_tens_of_usec = div64_u64((vsync_delta + 9999), 10000);
-       unsigned long long pix_clk_hundreds_khz = div64_u64((dc_crtc_timing->pix_clk_100hz + 999), 1000);
-       uint32_t req_delta_lines = (uint32_t) div64_u64(
-                       (req_delta_tens_of_usec * pix_clk_hundreds_khz + dc_crtc_timing->h_total - 1),
-                                                               dc_crtc_timing->h_total);
-
-       uint32_t vsync_line = get_start_vline(optc, dc_crtc_timing);
-       uint32_t start_line = 0;
-       uint32_t end_line = 0;
-
-       if (req_delta_lines != 0)
-               req_delta_lines--;
-
-       if (req_delta_lines > vsync_line)
-               start_line = dc_crtc_timing->v_total - (req_delta_lines - vsync_line) + 2;
-       else
-               start_line = vsync_line - req_delta_lines;
-
-       end_line = start_line + 2;
-
-       if (start_line >= dc_crtc_timing->v_total)
-               start_line = start_line % dc_crtc_timing->v_total;
-
-       if (end_line >= dc_crtc_timing->v_total)
-               end_line = end_line % dc_crtc_timing->v_total;
-
-       REG_SET_2(OTG_VERTICAL_INTERRUPT0_POSITION, 0,
-                       OTG_VERTICAL_INTERRUPT0_LINE_START, start_line,
-                       OTG_VERTICAL_INTERRUPT0_LINE_END, end_line);
+       switch (vline) {
+       case VLINE0:
+               REG_SET_2(OTG_VERTICAL_INTERRUPT0_POSITION, 0,
+                               OTG_VERTICAL_INTERRUPT0_LINE_START, vline_config.start_line,
+                               OTG_VERTICAL_INTERRUPT0_LINE_END, vline_config.end_line);
+               break;
+       case VLINE1:
+               REG_SET(OTG_VERTICAL_INTERRUPT1_POSITION, 0,
+                                       OTG_VERTICAL_INTERRUPT1_LINE_START, vline_config.start_line);
+               break;
+       default:
+               break;
+       }
 }
 
 /**
 
        SRI(OTG_CLOCK_CONTROL, OTG, inst),\
        SRI(OTG_VERTICAL_INTERRUPT0_CONTROL, OTG, inst),\
        SRI(OTG_VERTICAL_INTERRUPT0_POSITION, OTG, inst),\
+       SRI(OTG_VERTICAL_INTERRUPT1_CONTROL, OTG, inst),\
+       SRI(OTG_VERTICAL_INTERRUPT1_POSITION, OTG, inst),\
        SRI(OTG_VERTICAL_INTERRUPT2_CONTROL, OTG, inst),\
        SRI(OTG_VERTICAL_INTERRUPT2_POSITION, OTG, inst),\
        SRI(OPTC_INPUT_CLOCK_CONTROL, ODM, inst),\
        uint32_t OTG_CLOCK_CONTROL;
        uint32_t OTG_VERTICAL_INTERRUPT0_CONTROL;
        uint32_t OTG_VERTICAL_INTERRUPT0_POSITION;
+       uint32_t OTG_VERTICAL_INTERRUPT1_CONTROL;
+       uint32_t OTG_VERTICAL_INTERRUPT1_POSITION;
        uint32_t OTG_VERTICAL_INTERRUPT2_CONTROL;
        uint32_t OTG_VERTICAL_INTERRUPT2_POSITION;
        uint32_t OPTC_INPUT_CLOCK_CONTROL;
        SF(OTG0_OTG_VERTICAL_INTERRUPT0_CONTROL, OTG_VERTICAL_INTERRUPT0_INT_ENABLE, mask_sh),\
        SF(OTG0_OTG_VERTICAL_INTERRUPT0_POSITION, OTG_VERTICAL_INTERRUPT0_LINE_START, mask_sh),\
        SF(OTG0_OTG_VERTICAL_INTERRUPT0_POSITION, OTG_VERTICAL_INTERRUPT0_LINE_END, mask_sh),\
+       SF(OTG0_OTG_VERTICAL_INTERRUPT1_CONTROL, OTG_VERTICAL_INTERRUPT1_INT_ENABLE, mask_sh),\
+       SF(OTG0_OTG_VERTICAL_INTERRUPT1_POSITION, OTG_VERTICAL_INTERRUPT1_LINE_START, mask_sh),\
        SF(OTG0_OTG_VERTICAL_INTERRUPT2_CONTROL, OTG_VERTICAL_INTERRUPT2_INT_ENABLE, mask_sh),\
        SF(OTG0_OTG_VERTICAL_INTERRUPT2_POSITION, OTG_VERTICAL_INTERRUPT2_LINE_START, mask_sh),\
        SF(ODM0_OPTC_INPUT_CLOCK_CONTROL, OPTC_INPUT_CLK_EN, mask_sh),\
        type OTG_VERTICAL_INTERRUPT0_INT_ENABLE;\
        type OTG_VERTICAL_INTERRUPT0_LINE_START;\
        type OTG_VERTICAL_INTERRUPT0_LINE_END;\
+       type OTG_VERTICAL_INTERRUPT1_INT_ENABLE;\
+       type OTG_VERTICAL_INTERRUPT1_LINE_START;\
        type OTG_VERTICAL_INTERRUPT2_INT_ENABLE;\
        type OTG_VERTICAL_INTERRUPT2_LINE_START;\
        type OPTC_INPUT_CLK_EN;\
        bool use_vbios);
 
 void optc1_program_vline_interrupt(struct timing_generator *optc,
-               const struct dc_crtc_timing *dc_crtc_timing,
-               unsigned long long vsync_delta);
+               enum vline_select vline,
+               struct vline_config vline_config);
 
 void optc1_program_global_sync(
                struct timing_generator *optc);
 
 
 struct drr_params;
 
+struct vline_config;
+
+
+enum vline_select {
+       VLINE0,
+       VLINE1,
+       VLINE2
+};
+
 struct timing_generator_funcs {
        bool (*validate_timing)(struct timing_generator *tg,
                                                        const struct dc_crtc_timing *timing);
                                                        const struct dc_crtc_timing *timing,
                                                        bool use_vbios);
        void (*program_vline_interrupt)(struct timing_generator *optc,
-                       const struct dc_crtc_timing *dc_crtc_timing,
-                       unsigned long long vsync_delta);
+                       enum vline_select vline,
+                       struct vline_config vline_config);
        bool (*enable_crtc)(struct timing_generator *tg);
        bool (*disable_crtc)(struct timing_generator *tg);
        bool (*is_counter_moving)(struct timing_generator *tg);
 
        DC_IRQ_SOURCE_DC5_VLINE0,
        DC_IRQ_SOURCE_DC6_VLINE0,
 
+       DC_IRQ_SOURCE_DC1_VLINE1,
+       DC_IRQ_SOURCE_DC2_VLINE1,
+       DC_IRQ_SOURCE_DC3_VLINE1,
+       DC_IRQ_SOURCE_DC4_VLINE1,
+       DC_IRQ_SOURCE_DC5_VLINE1,
+       DC_IRQ_SOURCE_DC6_VLINE1,
+
+
        DAL_IRQ_SOURCES_NUMBER
 };