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Date: Mon, 11 Oct 2021 16:01:06 +0300
From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
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Subject: Re: [igt-dev] [PATCH i-g-t 13/14] tools/intel_display_poller: Add
 vrr-wrap test
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On Thu, Apr 08, 2021 at 11:03:29AM -0700, Navare, Manasi wrote:
> On Mon, Mar 01, 2021 at 12:37:46PM -0800, Manasi Navare wrote:
> > From: Ville Syrj=E4l=E4 <ville.syrjala@linux.intel.com>
> >=20
> > The VRR_STATUS2 registers contains yet anoher scanline counter.
> > Let's add a test to check when it wraps.
> >=20
> > Not sure this is actually useful. A better way might be to
> > allow wholesale replacement of the normal scanline counter
> > register with the VRR STATUS2? Not sure we care about this
> > register at all actually.
>=20
> Why do we need this test? This vertical scanline counter is just used
> to issue flip on a particular scanline mostly used for HW debug.
> How did you use the wrap test for testing VRR?

Hmm. Neglected to answer this one too. The only reason I added this
was to confirm how the VRR_STATUS2 scanline works. IIRC it worked
exactly like the normal DSL register, so we probably don't need this
test.

--=20
Ville Syrj=E4l=E4
Intel