1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
index c0bf8b7cc56..f8dae717acc 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_crtc.c
@@ -745,6 +745,11 @@ static void radeon_set_pll(struct drm_crtc *crtc, struct drm_display_mode *mode)
 
         pll->flags = RADEON_PLL_LEGACY;
 
+        if (mode->clock > 200000) /* range limits??? */
+                pll->flags |= RADEON_PLL_PREFER_HIGH_FB_DIV;
+        else
+                pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
+
         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
                 if (encoder->crtc == crtc) {
                         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);