Abhay Kumar 2a5b95b448 drm/i915/audio: set minimum CD clock to twice the BCLK ... In GLK when the device boots with only 1366x768 panel without audio, HDA codec doesn't come up. In this case, the CDCLK is less than twice the BCLK. Even though audio isn't being enabled, having a too low CDCLK leads to audio probe failing altogether. Require CDCLK to be at least twice the BLCK regardless of audio. This is a minimal fix to improve things. Unfortunately, this a) leads to too high CDCLK being used when audio is not used, and b) is still not enough to fix audio probe when no outputs are connected at probe time. The proper fix would be to increase CDCLK dynamically from the audio component hooks. v2: - Address comment (Jani) - New design approach v3: - Typo fix on top of v1 v4 by Jani: rewrite commit message, add comment in code Cc: stable@vger.kernel.org Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@gmail.com> Cc: Wenkai Du <wenkai.du@intel.com> Reviewed-by: Wenkai Du <wenkai.du@intel.com> Tested-by: Wenkai Du <wenkai.du@intel.com> Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102937 Signed-off-by: Abhay Kumar <abhay.kumar@intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180418103707.14645-1-jani.nikula@intel.com		2018-04-19 12:01:31 +03:00
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drm	drm/i915/audio: set minimum CD clock to twice the BCLK	2018-04-19 12:01:31 +03:00
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