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We need to enable DSI PLL before configuring the DSI registers. This has worked before on BYT/CHV, but BXT is more fussy. Signed-off-by: Ramalingam C <ramalingam.c@intel.com> Reviewed-by: Mika Kahola <mika.kahola@intel.com> Tested-by: Mika Kahola <mika.kahola@intel.com> # BXT Tested-by: Jani Nikula <jani.nikula@intel.com> # BYT Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1454503846-12103-1-git-send-email-ramalingam.c@intel.com