[Intel-gfx] [PATCH] drm/i915: set proper N/M in modeset

[Yang, Libin]

Hi Jani,

> -----Original Message-----
> From: Jani Nikula [mailto:jani.nikula at linux.intel.com]
> Sent: Tuesday, August 2, 2016 6:53 PM
> To: libin.yang at linux.intel.com; intel-gfx at lists.freedesktop.org;
> ville.syrjala at linux.intel.com; Vetter, Daniel <daniel.vetter at intel.com>;
> tiwai at suse.de
> Cc: Yang, Libin <libin.yang at intel.com>; Libin Yang
> <libin.yang at linux.intel.com>
> Subject: Re: [PATCH] drm/i915: set proper N/M in modeset
> 
> On Tue, 02 Aug 2016, libin.yang at linux.intel.com wrote:
> > From: Libin Yang <libin.yang at linux.intel.com>
> >
> > When modeset occurs and the LS_CLK is set to some special values in DP
> > mode, the N/M need to be set manually if audio is playing.
> >
> > The relationship of Maud and Naud is expressed in the following
> > equation:
> > Maud/Naud = 512 * fs / f_LS_Clk
> >
> > Please refer VESA DisplayPort Standard spec for details.
> >
> > Also, the patch applies
> > commit 7e8275c2f2bb ("drm/i915: set proper N/CTS in modeset") to APL
> > platform.
> 
> Whenever a commit message says "also", it makes me think the patch should
> probably be split to several patches. And that is certainly true here.

I will split the patch in next version.

Regards,
Libin

> 
> 
> --
> Jani Nikula, Intel Open Source Technology Center