linux-kernel - Re: [PATCH v3 1/2] dt-bindings: display: panel: document Samsung S6E8AA5X01 panel driver

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Message-ID: <cueav4uxbhswv2z3grf4qhwualhg3zxknahrhv6uaedit6dgdv@23enbjmj64d3>
Date: Sat, 5 Jul 2025 21:58:55 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Kaustabh Chakraborty <kauschluss@...root.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v3 1/2] dt-bindings: display: panel: document Samsung
 S6E8AA5X01 panel driver

On Mon, Jun 30, 2025 at 05:18:22PM +0000, Kaustabh Chakraborty wrote:
> On 2025-06-30 15:29, Neil Armstrong wrote:
> > On 25/06/2025 14:41, Kaustabh Chakraborty wrote:
> > > Samsung S6E8AA5X01 is an AMOLED MIPI DSI panel controller. Document
> > > the
> > > compatible and devicetree properties of this panel driver. Timings are
> > > provided through the devicetree node as panels are available in
> > > different sizes.
> > 
> > Wait, why ? Why not multiple compatibles ?
> 
> The panel dimensions is the only thing which differs. The model name,
> controller, registers, and functionality are supposedly all similar, so
> I believe this is fine...

I'd say, it is typical to have a controller to be used by different
panels. However usually those panels have different names or IDs. Please
follow the typical way of handling such a situation and use panel IDs
for compatibles.

-- 
With best wishes
Dmitry