linux-kernel - Re: [PATCH 1/2] dt-bindings: display: panel: Fork Waveshare panels into separate document

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Message-ID: <20260115174047.GA930768-robh@kernel.org>
Date: Thu, 15 Jan 2026 11:40:47 -0600
From: Rob Herring <robh@...nel.org>
To: Marek Vasut <marek.vasut+renesas@...lbox.org>
Cc: linux-arm-kernel@...ts.infradead.org,
	Conor Dooley <conor+dt@...nel.org>,
	David Airlie <airlied@...il.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Jessica Zhang <jesszhan0024@...il.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Magnus Damm <magnus.damm@...il.com>,
	Maxime Ripard <mripard@...nel.org>,
	Neil Armstrong <neil.armstrong@...aro.org>,
	Sam Ravnborg <sam@...nborg.org>, Simona Vetter <simona@...ll.ch>,
	Thierry Reding <thierry.reding@...il.com>,
	Thomas Zimmermann <tzimmermann@...e.de>, devicetree@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: display: panel: Fork Waveshare panels
 into separate document

On Tue, Jan 13, 2026 at 01:05:30AM +0100, Marek Vasut wrote:
> Move the Waveshare panels description into separate document, so they
> can be properly described with compatible = "waveshare,...", "panel-dpi"
> and attached to "waveshare,dsi2dpi" bridge.

But why do we need "panel-dpi"? Adding that requires changing a DT. 
Can't you make the kernel handle these compatible strings as a 
"panel-dpi" without the compatible?

Rob