DSI TCON0

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 94f24c5e2dc5..ffb7906054e5 100644
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -338,8 +338,9 @@ static void sun4i_tcon0_mode_set_cpu(struct sun4i_tcon *tcon,
        u32 block_space, start_delay;
        u32 tcon_div;
 
-       tcon->dclk_min_div = bpp/lanes;
-       tcon->dclk_max_div = bpp/lanes;
+       tcon->dclk_min_div = 4;
+       tcon->dclk_max_div = 127;
+       clk_set_rate_exclusive(tcon->sclk0,  mode->crtc_clock * 1000 * bpp / lanes);
 
        sun4i_tcon0_mode_set_common(tcon, mode);