diff options
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 5491a58e5b37..b9d5711c595c 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4468,10 +4468,13 @@ static void vlv_update_pll(struct intel_crtc *crtc) mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT)); mdiv |= ((bestn << DPIO_N_SHIFT)); mdiv |= (1 << DPIO_K_SHIFT); - if (intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_HDMI) || - intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_EDP) || - intel_pipe_has_type(&crtc->base, INTEL_OUTPUT_DISPLAYPORT)) - mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT); + + /* + * Post divider depends on pixel clock rate, DAC vs digital (and LVDS, + * but we don't support that). + * Note: don't use the DAC post divider as it seems unstable. + */ + mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT); intel_dpio_write(dev_priv, DPIO_DIV(pipe), mdiv); mdiv |= DPIO_ENABLE_CALIBRATION; |