diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
index b3ca85410b2c..47d571d97600 100644
--- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
+++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
@@ -375,7 +375,7 @@ static u16 sun6i_dsi_get_video_start_delay(struct sun6i_dsi *dsi,
 	 * working in all supported panels as of now.
 	 */
 	u8 start = 1;
-	u16 delay = mode->vtotal - (mode->vsync_end - mode->vdisplay) + start;
+	u16 delay = mode->vtotal - (mode->vsync_start - mode->vdisplay) + start;
 
 	if (delay > mode->vtotal)
 		delay = delay % mode->vtotal;