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由 Ville Syrjälä 提交于
Follow the sequence in the BIOS spec and clear the RC_CONTROL register before changing any of the other RC6/RP registers. Signed-off-by: NVille Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Deepak S<deepak.s@intel.com> Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
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