diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index f32206d959861..ba0c85e69f6f0 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -8059,6 +8059,14 @@ static bool i9xx_get_pipe_config(struct intel_crtc *crtc, else i9xx_crtc_clock_get(crtc, pipe_config); + /* + * Normally the dotclock is filled in by the encoder .get_config() + * but in case the pipe is enabled w/o any ports we need a sane + * default. + */ + pipe_config->base.adjusted_mode.crtc_clock = + pipe_config->port_clock / pipe_config->pixel_multiplier; + return true; }