[Bug 69675] audio broken in 24Hz/24p since 3.11 (regression)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Oct 31 21:38:10 CET 2013


https://bugs.freedesktop.org/show_bug.cgi?id=69675

--- Comment #29 from Anssi Hannula <anssi at mageia.org> ---
> Use the driver calculated CTS and N values rather than
> having hardware generate them.  This allows us to use
> the modeline pixel clock rather than the actual pll clock
> when setting up the dto for audio.  Fixes problems with
> audio playback rate on certain asics if the pll clock
> does not match the pixel clock exactly.

Hm, so actual problems were confirmed fixed with this? That seems rather
strange, since that would mean the hardware counted the clock cycles wrong for
the CTS value... Maybe the HW doesn't do it per-spec, instead calculating CTS
in some other way?

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