diff --git a/drivers/amlogic/media/osd/osd_fb.c b/drivers/amlogic/media/osd/osd_fb.c
index 77724e5571f4..0bec6097851d 100644
--- a/drivers/amlogic/media/osd/osd_fb.c
+++ b/drivers/amlogic/media/osd/osd_fb.c
@@ -424,14 +424,18 @@ static void osd_set_fb_parameters(int index, const struct vinfo_s *vinfo)
 	osd_set_free_scale_mode_hw(index, 1);
 	osd_set_free_scale_axis_hw(index, 0, 0,
 		(vinfo->width - 1), (vinfo->height - 1));
-
-	/* OVERSCAN */
-	overscan_window(vinfo, overscan_ratio, &left, &top, &width, &height);
-	osd_set_window_axis_hw(index, left, top, width, height);
-	osd_set_free_scale_enable_hw(index, 0x10001);
+	if (overscan_ratio == 100) {
+		osd_set_window_axis_hw(index, 0, 0,
+			(vinfo->width - 1), (vinfo->height - 1));
+	} else {
+		/* OVERSCAN */
+		overscan_window(vinfo, overscan_ratio,
+			&left, &top, &width, &height);
+		osd_set_window_axis_hw(index, left, top, width, height);
+		osd_set_free_scale_enable_hw(index, 0x10001);
+	}
 
 	osd_enable_hw(index, 1);
-
 }
 
 static int __init overscan_setup(char *str)