[Bug 91410] [BDW][Audio][HD-A Display] DP/HDMI audio playback abnormal

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91410

--- Comment #22 from Vasily Khoruzhick <anarsoul at gmail.com> ---
(In reply to Ville Syrjala from comment #20)
> Created attachment 122963 [details] [review]
> [PATCH] drm/i915: Update CDCLK_FREQ register on BDW after changing cdclk
> frequency
> 
> I found at least one thing missing from out BDW cdclk code. This should add
> it.

Doesn't fix the issue. Looks like audio driver uses stale value:

[ 2644.305055] broadwell_get_display_clock_speed 4c000000
[ 2644.305057] i915_audio_component_get_cdclk_freq 675000
[ 2644.322469] broadwell_get_display_clock_speed 4c000000
[ 2644.325669] broadwell_get_display_clock_speed 48000000

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