Re: [Intel-gfx] [PATCH v3 1/2] drm/i915: provide interface for audio driver to query cdclk

2014-07-04 Thread Takashi Iwai
At Fri, 4 Jul 2014 10:00:37 +0800, mengdong@intel.com wrote: From: Jani Nikula jani.nik...@intel.com For Haswell and Broadwell, if the display power well has been disabled, the display audio controller divider values EM4 M VALUE and EM5 N VALUE will have been lost. The CDCLK frequency

[Intel-gfx] [PATCH v3 1/2] drm/i915: provide interface for audio driver to query cdclk

2014-07-03 Thread mengdong . lin
From: Jani Nikula jani.nik...@intel.com For Haswell and Broadwell, if the display power well has been disabled, the display audio controller divider values EM4 M VALUE and EM5 N VALUE will have been lost. The CDCLK frequency is required for reprogramming them to generate 24MHz HD-A link BCLK. So