diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 55317c0..507b117 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -713,6 +713,28 @@ void dc_destroy(struct dc **dc)
 	*dc = NULL;
 }
 
+static void enable_timing_multisync(
+		struct dc *dc,
+		struct dc_state *ctx)
+{
+	int i = 0, multisync_count = 0;
+	int pipe_count = dc->res_pool->pipe_count;
+	struct pipe_ctx *multisync_pipes[MAX_PIPES] = { NULL };
+
+	for (i = 0; i < pipe_count; i++) {
+		if (!ctx->res_ctx.pipe_ctx[i].stream ||
+				!ctx->res_ctx.pipe_ctx[i].stream->triggered_crtc_reset.enabled)
+			continue;
+		multisync_pipes[multisync_count] = &ctx->res_ctx.pipe_ctx[i];
+		multisync_count++;
+	}
+
+	if (multisync_count > 1) {
+		dc->hwss.enable_per_frame_crtc_position_reset(
+			dc, multisync_count, multisync_pipes);
+	}
+}
+
 static void program_timing_sync(
 		struct dc *dc,
 		struct dc_state *ctx)
@@ -891,7 +913,9 @@ static enum dc_status dc_commit_state_no_check(struct dc *dc, struct dc_state *c
 	}
 	result = dc->hwss.apply_ctx_to_hw(dc, context);
 
-	program_timing_sync(dc, context);
+	if (context->stream_count > 1)
+		enable_timing_multisync(dc, context);
+		program_timing_sync(dc, context);
 
 	dc_enable_stereo(dc, context, dc_streams, context->stream_count);
 
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 4019e74..a51a9c7 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -607,6 +607,9 @@ struct dc_stream_state {
 
 	/* from stream struct */
 	struct kref refcount;
+
+	struct crtc_trigger_info triggered_crtc_reset;
+
 };
 
 struct dc_stream_update {
diff --git a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
index ea58d10..587c0bb 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_hw_types.h
@@ -673,6 +673,22 @@ enum dc_timing_3d_format {
 	TIMING_3D_FORMAT_MAX,
 };
 
+enum trigger_delay {
+	TRIGGER_DELAY_NEXT_PIXEL = 0,
+	TRIGGER_DELAY_NEXT_LINE,
+};
+
+enum crtc_event {
+	CRTC_EVENT_VSYNC_RISING = 0,
+	CRTC_EVENT_VSYNC_FALLING
+};
+
+struct crtc_trigger_info {
+	bool enabled;
+	struct dc_stream_state *event_source;
+	enum crtc_event event;
+	enum trigger_delay delay;
+};
 
 struct dc_crtc_timing {
 
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
index 58d019c..868040a 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
@@ -2457,20 +2457,16 @@ static void dce110_enable_timing_synchronization(
 
 	for (i = 1 /* skip the master */; i < group_size; i++)
 		grouped_pipes[i]->stream_res.tg->funcs->enable_reset_trigger(
-					grouped_pipes[i]->stream_res.tg, gsl_params.gsl_group);
-
-
+				grouped_pipes[i]->stream_res.tg,
+				gsl_params.gsl_group);
 
 	for (i = 1 /* skip the master */; i < group_size; i++) {
 		DC_SYNC_INFO("GSL: waiting for reset to occur.\n");
 		wait_for_reset_trigger_to_occur(dc_ctx, grouped_pipes[i]->stream_res.tg);
-		/* Regardless of success of the wait above, remove the reset or
-		 * the driver will start timing out on Display requests. */
-		DC_SYNC_INFO("GSL: disabling trigger-reset.\n");
-		grouped_pipes[i]->stream_res.tg->funcs->disable_reset_trigger(grouped_pipes[i]->stream_res.tg);
+		grouped_pipes[i]->stream_res.tg->funcs->disable_reset_trigger(
+				grouped_pipes[i]->stream_res.tg);
 	}
 
-
 	/* GSL Vblank synchronization is a one time sync mechanism, assumption
 	 * is that the sync'ed displays will not drift out of sync over time*/
 	DC_SYNC_INFO("GSL: Restoring register states.\n");
@@ -2480,6 +2476,39 @@ static void dce110_enable_timing_synchronization(
 	DC_SYNC_INFO("GSL: Set-up complete.\n");
 }
 
+static void dce110_enable_per_frame_crtc_position_reset(
+		struct dc *dc,
+		int group_size,
+		struct pipe_ctx *grouped_pipes[])
+{
+	struct dc_context *dc_ctx = dc->ctx;
+	struct dcp_gsl_params gsl_params = { 0 };
+	int i;
+
+	gsl_params.gsl_group = 0;
+	gsl_params.gsl_master = grouped_pipes[0]->stream->triggered_crtc_reset.event_source->status.primary_otg_inst;
+
+	for (i = 0; i < group_size; i++)
+		grouped_pipes[i]->stream_res.tg->funcs->setup_global_swap_lock(
+					grouped_pipes[i]->stream_res.tg, &gsl_params);
+
+	DC_SYNC_INFO("GSL: enabling trigger-reset\n");
+
+	for (i = 1; i < group_size; i++)
+		grouped_pipes[i]->stream_res.tg->funcs->enable_crtc_reset(
+				grouped_pipes[i]->stream_res.tg,
+				gsl_params.gsl_master,
+				&grouped_pipes[i]->stream->triggered_crtc_reset);
+
+	DC_SYNC_INFO("GSL: waiting for reset to occur.\n");
+	for (i = 1; i < group_size; i++)
+		wait_for_reset_trigger_to_occur(dc_ctx, grouped_pipes[i]->stream_res.tg);
+
+	for (i = 0; i < group_size; i++)
+		grouped_pipes[i]->stream_res.tg->funcs->tear_down_global_swap_lock(grouped_pipes[i]->stream_res.tg);
+
+}
+
 static void init_hw(struct dc *dc)
 {
 	int i;
@@ -2976,6 +3005,7 @@ static const struct hw_sequencer_funcs dce110_funcs = {
 	.power_down = dce110_power_down,
 	.enable_accelerated_mode = dce110_enable_accelerated_mode,
 	.enable_timing_synchronization = dce110_enable_timing_synchronization,
+	.enable_per_frame_crtc_position_reset = dce110_enable_per_frame_crtc_position_reset,
 	.update_info_frame = dce110_update_info_frame,
 	.enable_stream = dce110_enable_stream,
 	.disable_stream = dce110_disable_stream,
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
index 4befce6..25ca721 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.c
@@ -1224,26 +1224,46 @@ void dce110_timing_generator_setup_global_swap_lock(
 
 	/* This pipe will belong to GSL Group zero. */
 	set_reg_field_value(value,
-			1,
-			DCP_GSL_CONTROL,
-			DCP_GSL0_EN);
+			    1,
+			    DCP_GSL_CONTROL,
+			    DCP_GSL0_EN);
 
 	set_reg_field_value(value,
-			gsl_params->gsl_master == tg->inst,
-			DCP_GSL_CONTROL,
-			DCP_GSL_MASTER_EN);
+			    gsl_params->gsl_master == tg->inst,
+			    DCP_GSL_CONTROL,
+			    DCP_GSL_MASTER_EN);
 
 	set_reg_field_value(value,
-			HFLIP_READY_DELAY,
-			DCP_GSL_CONTROL,
-			DCP_GSL_HSYNC_FLIP_FORCE_DELAY);
+			    HFLIP_READY_DELAY,
+			    DCP_GSL_CONTROL,
+			    DCP_GSL_HSYNC_FLIP_FORCE_DELAY);
 
 	/* Keep signal low (pending high) during 6 lines.
 	 * Also defines minimum interval before re-checking signal. */
 	set_reg_field_value(value,
-			HFLIP_CHECK_DELAY,
-			DCP_GSL_CONTROL,
-			DCP_GSL_HSYNC_FLIP_CHECK_DELAY);
+			    HFLIP_CHECK_DELAY,
+			    DCP_GSL_CONTROL,
+			    DCP_GSL_HSYNC_FLIP_CHECK_DELAY);
+
+	dm_write_reg(tg->ctx, CRTC_REG(mmDCP_GSL_CONTROL), value);
+	value = 0;
+
+	set_reg_field_value(value,
+			    gsl_params->gsl_master,
+			    DCIO_GSL0_CNTL,
+			    DCIO_GSL0_VSYNC_SEL);
+
+	set_reg_field_value(value,
+			    0,
+			    DCIO_GSL0_CNTL,
+			    DCIO_GSL0_TIMING_SYNC_SEL);
+
+	set_reg_field_value(value,
+			    0,
+			    DCIO_GSL0_CNTL,
+			    DCIO_GSL0_GLOBAL_UNLOCK_SEL);
+
+	dm_write_reg(tg->ctx, CRTC_REG(mmDCIO_GSL0_CNTL), value);
 
 
 	{
@@ -1253,38 +1273,38 @@ void dce110_timing_generator_setup_global_swap_lock(
 				CRTC_REG(mmCRTC_V_TOTAL));
 
 		set_reg_field_value(value,
-				0,/* DCP_GSL_PURPOSE_SURFACE_FLIP */
-				DCP_GSL_CONTROL,
-				DCP_GSL_SYNC_SOURCE);
+				    0,/* DCP_GSL_PURPOSE_SURFACE_FLIP */
+				    DCP_GSL_CONTROL,
+				    DCP_GSL_SYNC_SOURCE);
 
 		/* Checkpoint relative to end of frame */
 		check_point = get_reg_field_value(value_crtc_vtotal,
-				CRTC_V_TOTAL,
-				CRTC_V_TOTAL);
+						  CRTC_V_TOTAL,
+						  CRTC_V_TOTAL);
 
 		dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_GSL_WINDOW), 0);
 	}
 
 	set_reg_field_value(value,
-			1,
-			DCP_GSL_CONTROL,
-			DCP_GSL_DELAY_SURFACE_UPDATE_PENDING);
+			    1,
+			    DCP_GSL_CONTROL,
+			    DCP_GSL_DELAY_SURFACE_UPDATE_PENDING);
 
 	dm_write_reg(tg->ctx, address, value);
 
 	/********************************************************************/
 	address = CRTC_REG(mmCRTC_GSL_CONTROL);
 
-	value = 0;
+	value = dm_read_reg(tg->ctx, address);
 	set_reg_field_value(value,
-			check_point - FLIP_READY_BACK_LOOKUP,
-			CRTC_GSL_CONTROL,
-			CRTC_GSL_CHECK_LINE_NUM);
+			    check_point - FLIP_READY_BACK_LOOKUP,
+			    CRTC_GSL_CONTROL,
+			    CRTC_GSL_CHECK_LINE_NUM);
 
 	set_reg_field_value(value,
-			VFLIP_READY_DELAY,
-			CRTC_GSL_CONTROL,
-			CRTC_GSL_FORCE_DELAY);
+			    VFLIP_READY_DELAY,
+			    CRTC_GSL_CONTROL,
+			    CRTC_GSL_FORCE_DELAY);
 
 	dm_write_reg(tg->ctx, address, value);
 }
@@ -1555,6 +1575,138 @@ void dce110_timing_generator_enable_reset_trigger(
 	dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);
 }
 
+void dce110_timing_generator_enable_crtc_reset(
+		struct timing_generator *tg,
+		int source_tg_inst,
+		struct crtc_trigger_info *crtc_tp)
+{
+	uint32_t value = 0;
+	uint32_t rising_edge = 0;
+	uint32_t falling_edge = 0;
+	struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
+
+	/* Setup trigger edge */
+	switch (crtc_tp->event) {
+	case CRTC_EVENT_VSYNC_RISING:
+			rising_edge = 1;
+			break;
+
+	case CRTC_EVENT_VSYNC_FALLING:
+		falling_edge = 1;
+		break;
+	}
+
+	value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL));
+
+	set_reg_field_value(value,
+			    source_tg_inst,
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_SOURCE_SELECT);
+
+	set_reg_field_value(value,
+			    TRIGGER_POLARITY_SELECT_LOGIC_ZERO,
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_POLARITY_SELECT);
+
+	set_reg_field_value(value,
+			    rising_edge,
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_RISING_EDGE_DETECT_CNTL);
+
+	set_reg_field_value(value,
+			    falling_edge,
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_FALLING_EDGE_DETECT_CNTL);
+
+	set_reg_field_value(value,
+			    1, /* clear trigger status */
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_CLEAR);
+
+	dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL), value);
+
+	/**************************************************************/
+
+	switch (crtc_tp->delay) {
+	case TRIGGER_DELAY_NEXT_LINE:
+		value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));
+
+		set_reg_field_value(value,
+				    0, /* force H count to H_TOTAL and V count to V_TOTAL */
+				    CRTC_FORCE_COUNT_NOW_CNTL,
+				    CRTC_FORCE_COUNT_NOW_MODE);
+
+		set_reg_field_value(value,
+				    0, /* TriggerB - we never use TriggerA */
+				    CRTC_FORCE_COUNT_NOW_CNTL,
+				    CRTC_FORCE_COUNT_NOW_TRIG_SEL);
+
+		set_reg_field_value(value,
+				    1, /* clear trigger status */
+				    CRTC_FORCE_COUNT_NOW_CNTL,
+				    CRTC_FORCE_COUNT_NOW_CLEAR);
+
+		dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);
+
+		value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));
+
+		set_reg_field_value(value,
+				    1,
+				    CRTC_VERT_SYNC_CONTROL,
+				    CRTC_FORCE_VSYNC_NEXT_LINE_CLEAR);
+
+		set_reg_field_value(value,
+				    2,
+				    CRTC_VERT_SYNC_CONTROL,
+				    CRTC_AUTO_FORCE_VSYNC_MODE);
+
+		break;
+
+	case TRIGGER_DELAY_NEXT_PIXEL:
+		value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));
+
+		set_reg_field_value(value,
+				    1,
+				    CRTC_VERT_SYNC_CONTROL,
+				    CRTC_FORCE_VSYNC_NEXT_LINE_CLEAR);
+
+		set_reg_field_value(value,
+				    0,
+				    CRTC_VERT_SYNC_CONTROL,
+				    CRTC_AUTO_FORCE_VSYNC_MODE);
+
+		dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL), value);
+
+		value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));
+
+		set_reg_field_value(value,
+				    2, /* force H count to H_TOTAL and V count to V_TOTAL */
+				    CRTC_FORCE_COUNT_NOW_CNTL,
+				    CRTC_FORCE_COUNT_NOW_MODE);
+
+		set_reg_field_value(value,
+				    1, /* TriggerB - we never use TriggerA */
+				    CRTC_FORCE_COUNT_NOW_CNTL,
+				    CRTC_FORCE_COUNT_NOW_TRIG_SEL);
+
+		set_reg_field_value(value,
+				    1, /* clear trigger status */
+				    CRTC_FORCE_COUNT_NOW_CNTL,
+				    CRTC_FORCE_COUNT_NOW_CLEAR);
+
+		dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);
+		break;
+	}
+
+	value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_MODE));
+
+	set_reg_field_value(value,
+			    2,
+			    CRTC_MASTER_UPDATE_MODE,
+			    MASTER_UPDATE_MODE);
+
+	dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_MASTER_UPDATE_MODE), value);
+}
 void dce110_timing_generator_disable_reset_trigger(
 	struct timing_generator *tg)
 {
@@ -1564,34 +1716,48 @@ void dce110_timing_generator_disable_reset_trigger(
 	value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));
 
 	set_reg_field_value(value,
-			0, /* force counter now mode is disabled */
-			CRTC_FORCE_COUNT_NOW_CNTL,
-			CRTC_FORCE_COUNT_NOW_MODE);
+			    0, /* force counter now mode is disabled */
+			    CRTC_FORCE_COUNT_NOW_CNTL,
+			    CRTC_FORCE_COUNT_NOW_MODE);
 
 	set_reg_field_value(value,
-			1, /* clear trigger status */
-			CRTC_FORCE_COUNT_NOW_CNTL,
-			CRTC_FORCE_COUNT_NOW_CLEAR);
+			    1, /* clear trigger status */
+			    CRTC_FORCE_COUNT_NOW_CNTL,
+			    CRTC_FORCE_COUNT_NOW_CLEAR);
 
 	dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL), value);
 
+	value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));
+
+	set_reg_field_value(value,
+			    1,
+			    CRTC_VERT_SYNC_CONTROL,
+			    CRTC_FORCE_VSYNC_NEXT_LINE_CLEAR);
+
+	set_reg_field_value(value,
+			    0,
+			    CRTC_VERT_SYNC_CONTROL,
+			    CRTC_AUTO_FORCE_VSYNC_MODE);
+
+	dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_VERT_SYNC_CONTROL), value);
+
 	/********************************************************************/
 	value = dm_read_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL));
 
 	set_reg_field_value(value,
-			TRIGGER_SOURCE_SELECT_LOGIC_ZERO,
-			CRTC_TRIGB_CNTL,
-			CRTC_TRIGB_SOURCE_SELECT);
+			    TRIGGER_SOURCE_SELECT_LOGIC_ZERO,
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_SOURCE_SELECT);
 
 	set_reg_field_value(value,
-			TRIGGER_POLARITY_SELECT_LOGIC_ZERO,
-			CRTC_TRIGB_CNTL,
-			CRTC_TRIGB_POLARITY_SELECT);
+			    TRIGGER_POLARITY_SELECT_LOGIC_ZERO,
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_POLARITY_SELECT);
 
 	set_reg_field_value(value,
-			1, /* clear trigger status */
-			CRTC_TRIGB_CNTL,
-			CRTC_TRIGB_CLEAR);
+			    1, /* clear trigger status */
+			    CRTC_TRIGB_CNTL,
+			    CRTC_TRIGB_CLEAR);
 
 	dm_write_reg(tg->ctx, CRTC_REG(mmCRTC_TRIGB_CNTL), value);
 }
@@ -1611,10 +1777,16 @@ bool dce110_timing_generator_did_triggered_reset_occur(
 	struct dce110_timing_generator *tg110 = DCE110TG_FROM_TG(tg);
 	uint32_t value = dm_read_reg(tg->ctx,
 			CRTC_REG(mmCRTC_FORCE_COUNT_NOW_CNTL));
+	uint32_t value1 = dm_read_reg(tg->ctx,
+			CRTC_REG(mmCRTC_VERT_SYNC_CONTROL));
+	bool force = get_reg_field_value(value,
+					 CRTC_FORCE_COUNT_NOW_CNTL,
+					 CRTC_FORCE_COUNT_NOW_OCCURRED) != 0;
+	bool vert_sync = get_reg_field_value(value1,
+					     CRTC_VERT_SYNC_CONTROL,
+					     CRTC_FORCE_VSYNC_NEXT_LINE_OCCURRED) != 0;
 
-	return get_reg_field_value(value,
-			CRTC_FORCE_COUNT_NOW_CNTL,
-			CRTC_FORCE_COUNT_NOW_OCCURRED) != 0;
+	return (force || vert_sync);
 }
 
 /**
@@ -1928,6 +2100,7 @@ static const struct timing_generator_funcs dce110_tg_funcs = {
 		.setup_global_swap_lock =
 				dce110_timing_generator_setup_global_swap_lock,
 		.enable_reset_trigger = dce110_timing_generator_enable_reset_trigger,
+		.enable_crtc_reset = dce110_timing_generator_enable_crtc_reset,
 		.disable_reset_trigger = dce110_timing_generator_disable_reset_trigger,
 		.tear_down_global_swap_lock =
 				dce110_timing_generator_tear_down_global_swap_lock,
diff --git a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.h b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.h
index 82737de..232747c 100644
--- a/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.h
+++ b/drivers/gpu/drm/amd/display/dc/dce110/dce110_timing_generator.h
@@ -174,6 +174,12 @@ void dce110_timing_generator_setup_global_swap_lock(
 void dce110_timing_generator_tear_down_global_swap_lock(
 	struct timing_generator *tg);
 
+/* Reset crtc position on master VSync */
+void dce110_timing_generator_enable_crtc_reset(
+	struct timing_generator *tg,
+	int source,
+	struct crtc_trigger_info *crtc_tp);
+
 /* Reset slave controllers on master VSync */
 void dce110_timing_generator_enable_reset_trigger(
 	struct timing_generator *tg,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index adabd2a..762af17 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -1304,14 +1304,15 @@ static void dcn10_enable_timing_synchronization(
 
 	for (i = 1; i < group_size; i++)
 		grouped_pipes[i]->stream_res.tg->funcs->enable_reset_trigger(
-				grouped_pipes[i]->stream_res.tg, grouped_pipes[0]->stream_res.tg->inst);
-
+				grouped_pipes[i]->stream_res.tg,
+				grouped_pipes[0]->stream_res.tg->inst);
 
 	DC_SYNC_INFO("Waiting for trigger\n");
 
 	/* Need to get only check 1 pipe for having reset as all the others are
 	 * synchronized. Look at last pipe programmed to reset.
 	 */
+
 	wait_for_reset_trigger_to_occur(dc_ctx, grouped_pipes[1]->stream_res.tg);
 	for (i = 1; i < group_size; i++)
 		grouped_pipes[i]->stream_res.tg->funcs->disable_reset_trigger(
@@ -1320,6 +1321,29 @@ static void dcn10_enable_timing_synchronization(
 	DC_SYNC_INFO("Sync complete\n");
 }
 
+static void dcn10_enable_per_frame_crtc_position_reset(
+	struct dc *dc,
+	int group_size,
+	struct pipe_ctx *grouped_pipes[])
+{
+	struct dc_context *dc_ctx = dc->ctx;
+	int i;
+
+	DC_SYNC_INFO("Setting up\n");
+	for (i = 0; i < group_size; i++)
+		grouped_pipes[i]->stream_res.tg->funcs->enable_crtc_reset(
+				grouped_pipes[i]->stream_res.tg,
+				grouped_pipes[i]->stream->triggered_crtc_reset.event_source->status.primary_otg_inst,
+				&grouped_pipes[i]->stream->triggered_crtc_reset);
+
+	DC_SYNC_INFO("Waiting for trigger\n");
+
+	for (i = 1; i < group_size; i++)
+		wait_for_reset_trigger_to_occur(dc_ctx, grouped_pipes[i]->stream_res.tg);
+
+	DC_SYNC_INFO("Multi-display sync is complete\n");
+}
+
 static void print_rq_dlg_ttu(
 		struct dc *core_dc,
 		struct pipe_ctx *pipe_ctx)
@@ -2485,6 +2509,7 @@ static const struct hw_sequencer_funcs dcn10_funcs = {
 	.power_down = dce110_power_down,
 	.enable_accelerated_mode = dce110_enable_accelerated_mode,
 	.enable_timing_synchronization = dcn10_enable_timing_synchronization,
+	.enable_per_frame_crtc_position_reset = dcn10_enable_per_frame_crtc_position_reset,
 	.update_info_frame = dce110_update_info_frame,
 	.enable_stream = dce110_enable_stream,
 	.disable_stream = dce110_disable_stream,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
index fced178..c178cc0b 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_timing_generator.c
@@ -610,12 +610,28 @@ static bool tgn10_did_triggered_reset_occur(
 	struct timing_generator *tg)
 {
 	struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
-	uint32_t occurred;
+	uint32_t occurred_force, occurred_vsync;
 
 	REG_GET(OTG_FORCE_COUNT_NOW_CNTL,
-		OTG_FORCE_COUNT_NOW_OCCURRED, &occurred);
+		OTG_FORCE_COUNT_NOW_OCCURRED, &occurred_force);
 
-	return occurred != 0;
+	REG_GET(OTG_VERT_SYNC_CONTROL,
+		OTG_FORCE_VSYNC_NEXT_LINE_OCCURRED, &occurred_vsync);
+
+	return occurred_vsync != 0 || occurred_force != 0;
+}
+
+static void tgn10_disable_reset_trigger(struct timing_generator *tg)
+{
+	struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
+
+	REG_WRITE(OTG_TRIGA_CNTL, 0);
+
+	REG_SET(OTG_FORCE_COUNT_NOW_CNTL, 0,
+		OTG_FORCE_COUNT_NOW_CLEAR, 1);
+
+	REG_SET(OTG_VERT_SYNC_CONTROL, 0,
+		OTG_FORCE_VSYNC_NEXT_LINE_CLEAR, 1);
 }
 
 static void tgn10_enable_reset_trigger(struct timing_generator *tg, int source_tg_inst)
@@ -652,14 +668,49 @@ static void tgn10_enable_reset_trigger(struct timing_generator *tg, int source_t
 			OTG_FORCE_COUNT_NOW_MODE, 2);
 }
 
-static void tgn10_disable_reset_trigger(struct timing_generator *tg)
+void tgn10_enable_crtc_reset(
+		struct timing_generator *tg,
+		int source_tg_inst,
+		struct crtc_trigger_info *crtc_tp)
 {
 	struct dcn10_timing_generator *tgn10 = DCN10TG_FROM_TG(tg);
+	uint32_t falling_edge = 0;
+	uint32_t rising_edge = 0;
 
-	REG_WRITE(OTG_TRIGA_CNTL, 0);
+	switch (crtc_tp->event) {
 
-	REG_SET(OTG_FORCE_COUNT_NOW_CNTL, 0,
-			OTG_FORCE_COUNT_NOW_CLEAR, 1);
+	case CRTC_EVENT_VSYNC_RISING:
+		rising_edge = 1;
+		break;
+
+	case CRTC_EVENT_VSYNC_FALLING:
+		falling_edge = 1;
+		break;
+	}
+
+	REG_SET_4(OTG_TRIGA_CNTL, 0,
+		 /* vsync signal from selected OTG pipe based
+		  * on OTG_TRIG_SOURCE_PIPE_SELECT setting
+		  */
+		  OTG_TRIGA_SOURCE_SELECT, 20,
+		  OTG_TRIGA_SOURCE_PIPE_SELECT, source_tg_inst,
+		  /* always detect falling edge */
+		  OTG_TRIGA_RISING_EDGE_DETECT_CNTL, rising_edge,
+		  OTG_TRIGA_FALLING_EDGE_DETECT_CNTL, falling_edge);
+
+	switch (crtc_tp->delay) {
+	case TRIGGER_DELAY_NEXT_LINE:
+		REG_SET(OTG_VERT_SYNC_CONTROL, 0,
+				OTG_AUTO_FORCE_VSYNC_MODE, 1);
+		break;
+	case TRIGGER_DELAY_NEXT_PIXEL:
+		REG_SET(OTG_FORCE_COUNT_NOW_CNTL, 0,
+			/* force H count to H_TOTAL and V count to V_TOTAL in
+			 * progressive mode and V_TOTAL-1 in interlaced mode
+			 */
+			OTG_FORCE_COUNT_NOW_MODE, 2);
+		break;
+	}
 }
 
 static void tgn10_wait_for_state(struct timing_generator *tg,
@@ -1174,6 +1225,7 @@ static const struct timing_generator_funcs dcn10_tg_funcs = {
 		.set_blank_color = tgn10_program_blank_color,
 		.did_triggered_reset_occur = tgn10_did_triggered_reset_occur,
 		.enable_reset_trigger = tgn10_enable_reset_trigger,
+		.enable_crtc_reset = tgn10_enable_crtc_reset,
 		.disable_reset_trigger = tgn10_disable_reset_trigger,
 		.lock = tgn10_lock,
 		.unlock = tgn10_unlock,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
index c6ab38c..75f7a01 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/timing_generator.h
@@ -158,7 +158,11 @@ struct timing_generator_funcs {
 							const struct dcp_gsl_params *gsl_params);
 	void (*unlock)(struct timing_generator *tg);
 	void (*lock)(struct timing_generator *tg);
-	void (*enable_reset_trigger)(struct timing_generator *tg, int source_tg_inst);
+	void (*enable_reset_trigger)(struct timing_generator *tg,
+				     int source_tg_inst);
+	void (*enable_crtc_reset)(struct timing_generator *tg,
+				  int source_tg_inst,
+				  struct crtc_trigger_info *crtc_tp);
 	void (*disable_reset_trigger)(struct timing_generator *tg);
 	void (*tear_down_global_swap_lock)(struct timing_generator *tg);
 	void (*enable_advanced_request)(struct timing_generator *tg,
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
index 8734689..cebbba3 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw_sequencer.h
@@ -114,6 +114,11 @@ struct hw_sequencer_funcs {
 			int group_size,
 			struct pipe_ctx *grouped_pipes[]);
 
+	void (*enable_per_frame_crtc_position_reset)(
+			struct dc *dc,
+			int group_size,
+			struct pipe_ctx *grouped_pipes[]);
+
 	void (*enable_display_pipe_clock_gating)(
 					struct dc_context *ctx,
 					bool clock_gating);