SKL_DSSM         1533 drivers/gpu/drm/i915/display/intel_cdclk.c 	if (I915_READ(SKL_DSSM) & CNL_DSSM_CDCLK_PLL_REFCLK_24MHz)
SKL_DSSM         1887 drivers/gpu/drm/i915/display/intel_cdclk.c 	val = I915_READ(SKL_DSSM);