linux-kernel - Re: [Intel-gfx] [PATCH 2/2] drm/i915/edp/jsl: Update vswing table for HBR and HBR2

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Date:   Tue, 29 Sep 2020 15:45:33 +0300
From:   Ville Syrjälä <ville.syrjala@...ux.intel.com>
To:     Jani Nikula <jani.nikula@...ux.intel.com>
Cc:     James Ausmus <james.ausmus@...el.com>,
        Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@...el.com>,
        rodrigo.vivi@...el.com, airlied@...ux.ie, daniel@...ll.ch,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, matthew.d.roper@...el.com,
        jose.souza@...el.com, lucas.demarchi@...el.com,
        hariom.pandey@...el.com
Subject: Re: [Intel-gfx] [PATCH 2/2] drm/i915/edp/jsl: Update vswing table
 for HBR and HBR2

On Mon, Sep 28, 2020 at 08:20:59PM +0300, Jani Nikula wrote:
> On Mon, 28 Sep 2020, Ville Syrjälä <ville.syrjala@...ux.intel.com> wrote:
> > On Mon, Sep 28, 2020 at 07:15:43AM -0700, James Ausmus wrote:
> >> On Mon, Sep 28, 2020 at 04:43:11PM +0300, Jani Nikula wrote:
> >> > On Mon, 28 Sep 2020, Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@...el.com> wrote:
> >> > > JSL has update in vswing table for eDP
> >> > 
> >> > I've thought the TLA for Jasper Lake is JSP, not JSL. At least we have
> >> > PCH_JSP for Jasper Lake PCH.
> >> 
> >> JSP == Point (the PCH), JSL == Lake
> >
> > .PT was "<something> Point", ..P stands just for "<something> PCH" IIRC.
> 
> Yeah, nowadays it doesn't have "Point", however bspec agrees on the JSL
> acronym for Jasper Lake.

Bspec uses ..P for "<platform> PCH", when it acknowledges the existence
of said PCH (see eg. CNP,ICP,TGP). JSP is not among that select crowd
however, neither really is MCC (although it is mentioned by name in the
JSL section).

I kinda want to nuke the JSP and MCC types entirely. I believe we should
be able to treat them as just ICP and TGP variants respectively. But
theres's still a bit of work left to do before we can get there.

-- 
Ville Syrjälä
Intel