linux-kernel - Re: [PATCH v2 5/6] dt-bindings: drm/panel: simple: Innolux TV123WAM is actually P120ZDG-BF1

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Date:   Fri, 26 Oct 2018 10:46:57 -0400
From:   Sean Paul <sean@...rly.run>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Sean Paul <seanpaul@...omium.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Sandeep Panda <spanda@...eaurora.org>,
        linux-arm-msm@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        jsanka@...eaurora.org, ryandcase@...omium.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, Rob Herring <robh+dt@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v2 5/6] dt-bindings: drm/panel: simple: Innolux TV123WAM
 is actually P120ZDG-BF1

On Fri, Oct 26, 2018 at 10:43:56AM -0400, Sean Paul wrote:
> On Thu, Oct 25, 2018 at 03:21:33PM -0700, Douglas Anderson wrote:
> > As far as I can tell the bindings that were added in commit
> > 9c04400f7ea6 ("dt-bindings: drm/panel: Document Innolux TV123WAM panel
> > bindings") weren't actually for Innolux TV123WAM but were actually for
> > Innolux P120ZDG-BF1.
> > 
> > As far as I can tell the Innolux TV123WAM isn't a real panel and but
> > it's a mosh between the TI TV123WAM and the Innolux P120ZDG-BF1.
> > Let's unmosh.
> > 
> > Here's my evidence:
> > 
> > * Searching for TV123WAM on the Internet turns up a TI panel.  While
> >   it's possible that an Innolux panel has the same model number as the
> >   TI Panel, it seems a little doubtful.  Looking up the datasheet from
> >   the TI Panel shows that it's 1920 x 1280 and 259.2 mm x 172.8 mm.
> > 
> > * As far as I know, the patch adding the Innolux Panel was supposed to
> >   be for the board that's sitting in front of me as I type this
> >   (support for that board is not yet upstream).  On the back of that
> >   panel I see Innolux P120ZDZ-EZ1 rev B1.
> > 
> > * Someone pointed me at a datasheet that's supposed to be for the
> >   panel in front of me (sorry, I can't share the datasheet).  That
> >   datasheet has the string "p120zdg-bf1"
> > 
> > * If I search for "P120ZDG-BF1" on the Internet I get hits for panels
> >   that are 2160x1440.  They don't have datasheets, but the fact that
> >   the resolution matches is a good sign.
> > 
> > While we doing the rename, also mention that no-hpd can be used with
> > this panel.  See the previous patch in this series ("drm/panel:
> > simple: Add "no-hpd" delay for Innolux TV123WAM").
> > 
> > Fixes: 9c04400f7ea6 ("dt-bindings: drm/panel: Document Innolux TV123WAM panel bindings")
> > Signed-off-by: Douglas Anderson <dianders@...omium.org>
> > Reviewed-by: Rob Herring <robh@...nel.org>
> 
> I didn't see your v2 when I replied to the v1 patch, so for the record,
> 
> Reviewed-by: Sean Paul <sean@...rly.run>
> 
> Also note to whoever applies this to -misc, v1 also had
> 
> Reviewed-by: Abhinav Kumar <abhinavk@...eaurora.org>

And I just realized that patches 5 & 6 were swapped in v2. So nevermind this,
Doug's v2 tags are correct.

Dear coffee, please kick in soon.

Sean


> 
> 
> Sean
> 
> > Cc: Sandeep Panda <spanda@...eaurora.org>
> > ---
> > 
> > Changes in v2: None
> > 
> >  .../{innolux,tv123wam.txt => innolux,p120zdg-bf1.txt}     | 8 +++++---
> >  1 file changed, 5 insertions(+), 3 deletions(-)
> >  rename Documentation/devicetree/bindings/display/panel/{innolux,tv123wam.txt => innolux,p120zdg-bf1.txt} (70%)
> > 
> > diff --git a/Documentation/devicetree/bindings/display/panel/innolux,tv123wam.txt b/Documentation/devicetree/bindings/display/panel/innolux,p120zdg-bf1.txt
> > similarity index 70%
> > rename from Documentation/devicetree/bindings/display/panel/innolux,tv123wam.txt
> > rename to Documentation/devicetree/bindings/display/panel/innolux,p120zdg-bf1.txt
> > index a9b35265fa13..513f03466aba 100644
> > --- a/Documentation/devicetree/bindings/display/panel/innolux,tv123wam.txt
> > +++ b/Documentation/devicetree/bindings/display/panel/innolux,p120zdg-bf1.txt
> > @@ -1,20 +1,22 @@
> > -Innolux TV123WAM 12.3 inch eDP 2K display panel
> > +Innolux P120ZDG-BF1 12.02 inch eDP 2K display panel
> >  
> >  This binding is compatible with the simple-panel binding, which is specified
> >  in simple-panel.txt in this directory.
> >  
> >  Required properties:
> > -- compatible: should be "innolux,tv123wam"
> > +- compatible: should be "innolux,p120zdg-bf1"
> >  - power-supply: regulator to provide the supply voltage
> >  
> >  Optional properties:
> >  - enable-gpios: GPIO pin to enable or disable the panel
> >  - backlight: phandle of the backlight device attached to the panel
> > +- no-hpd: If HPD isn't hooked up; add this property.
> >  
> >  Example:
> >  	panel_edp: panel-edp {
> > -		compatible = "innolux,tv123wam";
> > +		compatible = "innolux,p120zdg-bf1";
> >  		enable-gpios = <&msmgpio 31 GPIO_ACTIVE_LOW>;
> >  		power-supply = <&pm8916_l2>;
> >  		backlight = <&backlight>;
> > +		no-hpd;
> >  	};
> > -- 
> > 2.19.1.568.g152ad8e336-goog
> > 
> 
> -- 
> Sean Paul, Software Engineer, Google / Chromium OS

-- 
Sean Paul, Software Engineer, Google / Chromium OS