.vsync_len      = 4,
        .vback_porch    = 7,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_HIGH | DISPLAY_FLAGS_VSYNC_HIGH |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_SYNC_NEGEDGE | DISPLAY_FLAGS_DE_HIGH |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
 };
 
 struct panel_drv_data {
 
 
 static void tfp410_fix_timings(struct omap_video_timings *timings)
 {
-       timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
-       timings->flags |= DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE;
+       timings->flags |= DISPLAY_FLAGS_DE_HIGH |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE |
+                         DISPLAY_FLAGS_SYNC_POSEDGE;
 }
 
 static void tfp410_set_timings(struct omap_dss_device *dssdev,
 
        .vfront_porch   = 4,
        .vback_porch    = 18,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_NEGEDGE |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
 };
 
 struct panel_drv_data {
 
        .vsync_len      = 1,
        .vback_porch    = 4,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
 };
 
 #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
 
        .vfront_porch   = 1,
        .vback_porch    = 1,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_NEGEDGE |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
 };
 
 #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
 
        .vsync_len      = 3,
        .vback_porch    = 4,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_NEGEDGE |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
 };
 
 #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
 
        .vsync_len      = 2,
        .vback_porch    = 2,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_NEGEDGE,
+                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
+                         DISPLAY_FLAGS_PIXDATA_NEGEDGE,
 };
 
 #define JBT_COMMAND    0x000
 
        .vfront_porch   = 39,
        .vback_porch    = 34,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
-
        .flags          = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_NEGEDGE,
+                         DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
+                         DISPLAY_FLAGS_PIXDATA_NEGEDGE,
 };
 
 #define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)
 
        /* always use the 'rf' setting */
        onoff = true;
 
-       switch (ovt->sync_pclk_edge) {
-       case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
-               rf = false;
-               break;
-       case OMAPDSS_DRIVE_SIG_RISING_EDGE:
+       if (ovt->flags & DISPLAY_FLAGS_SYNC_POSEDGE)
                rf = true;
-               break;
-       default:
-               BUG();
-       }
+       else
+               rf = false;
 
        l = FLD_VAL(onoff, 17, 17) |
                FLD_VAL(rf, 16, 16) |
                        !!(t.flags & DISPLAY_FLAGS_HSYNC_HIGH),
                        !!(t.flags & DISPLAY_FLAGS_PIXDATA_POSEDGE),
                        !!(t.flags & DISPLAY_FLAGS_DE_HIGH),
-                       t.sync_pclk_edge);
+                       !!(t.flags & DISPLAY_FLAGS_SYNC_POSEDGE));
 
                DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
        } else {
                .pixelclock = 16000000,
                .hsync_len = 8, .hfront_porch = 4, .hback_porch = 4,
                .vsync_len = 1, .vfront_porch = 1, .vback_porch = 1,
-               .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE,
 
                .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
-                        DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                        DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
+                        DISPLAY_FLAGS_PIXDATA_POSEDGE,
        },
        .ovli = {
                .screen_width = 1,
 
        ovt->vfront_porch = vm->vfront_porch;
        ovt->vsync_len = vm->vsync_len;
        ovt->flags = vm->flags;
-
-       ovt->sync_pclk_edge = ovt->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE ?
-               OMAPDSS_DRIVE_SIG_RISING_EDGE :
-               OMAPDSS_DRIVE_SIG_FALLING_EDGE;
 }
 EXPORT_SYMBOL(videomode_to_omap_video_timings);
 
 
        dsi->timings.flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
        dsi->timings.flags &= ~DISPLAY_FLAGS_DE_LOW;
        dsi->timings.flags |= DISPLAY_FLAGS_DE_HIGH;
-       dsi->timings.sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
+       dsi->timings.flags &= ~DISPLAY_FLAGS_SYNC_POSEDGE;
+       dsi->timings.flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
 
        dss_mgr_set_timings(channel, &dsi->timings);
 
 
        /* Unit: line clocks */
        u16 vback_porch;        /* Vertical back porch */
 
-       /* Pixel clock edges to drive HSYNC and VSYNC signals */
-       enum omap_dss_signal_edge sync_pclk_edge;
-
        enum display_flags flags;
 };
 
 
        rfbi.timings.flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
        rfbi.timings.flags &= ~DISPLAY_FLAGS_DE_LOW;
        rfbi.timings.flags |= DISPLAY_FLAGS_DE_HIGH;
-       rfbi.timings.sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
+       rfbi.timings.flags &= ~DISPLAY_FLAGS_SYNC_POSEDGE;
+       rfbi.timings.flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
 
        dss_mgr_set_timings(mgr, &rfbi.timings);
 }
 
                goto err_get_dispc;
 
        /* 15.5.9.1.2 */
-       t->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
-       t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
+       t->flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE | DISPLAY_FLAGS_SYNC_POSEDGE;
 
        r = sdi_calc_clock_div(t->pixelclock, &fck, &dispc_cinfo);
        if (r)
 
        .vfront_porch   = 5,
        .vback_porch    = 41,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
-
        .flags          = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
                          DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH |
-                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE |
+                         DISPLAY_FLAGS_SYNC_NEGEDGE,
 };
 EXPORT_SYMBOL(omap_dss_pal_timings);
 
        .vfront_porch   = 6,
        .vback_porch    = 31,
 
-       .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE,
-
        .flags          = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
                          DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH |
-                         DISPLAY_FLAGS_PIXDATA_POSEDGE,
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE |
+                         DISPLAY_FLAGS_SYNC_NEGEDGE,
 };
 EXPORT_SYMBOL(omap_dss_ntsc_timings);
 
 
        else
                timings->flags |= DISPLAY_FLAGS_VSYNC_LOW;
 
-       timings->flags |= DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_PIXDATA_POSEDGE;
-       timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE;
+       timings->flags |= DISPLAY_FLAGS_DE_HIGH |
+                         DISPLAY_FLAGS_PIXDATA_POSEDGE |
+                         DISPLAY_FLAGS_SYNC_NEGEDGE;
 }
 
 static enum drm_connector_status omap_connector_detect(