From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 97FE3C44514 for ; Thu, 16 Jul 2026 20:44:04 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 079E910F3D4; Thu, 16 Jul 2026 20:44:04 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="Zco0BAv7"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6FF5E10F3D4 for ; Thu, 16 Jul 2026 20:44:02 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 0C02141759; Thu, 16 Jul 2026 20:44:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C19C81F000E9; Thu, 16 Jul 2026 20:44:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784234641; bh=ndiUnTv+f5gzNuW74iwaWREcbUrCZddvl6t+J/D2k5A=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Zco0BAv7DEDZe/+tNjWKWcuitAbYkU1Skvu3LNjUkaD8HJVt+7Sh6T712y4OB1jwT tj+H9/MQU6ZnkHt4TOSkSv0kh0XlzlkRSb46MvG0/S/BfNGKTm8TOMHF7fe7zU4QyG a1YvISgEOIg/OmXHxBlGbEDfzxVyf1YcKOneBKRNrz0M1KevXaGd57YZ77p2dVd7vf AcVkm59gJHAPNO7YTiWwsRzqSjbZYv7VMTxp/PpFUGJSIuNA1wlNPzqVcldjLkqCdH SNdVQEMR+XAoLgBhJDMC7jQQVtg4e+gyOOhO3q3tPzxo77tm4GInYeGxRTe7hMdFRk IqfdNIX3BtTFg== Date: Thu, 16 Jul 2026 15:44:01 -0500 From: Rob Herring To: Laurent Pinchart Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Thuan Nguyen , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Andrzej Hajda , Neil Armstrong , Robert Foss , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , linux-renesas-soc@vger.kernel.org Subject: Re: [PATCH 1/4] dt-bindings: display: vga-connector: Allow hardcoding EDID Message-ID: <20260716204401.GA1209579-robh@kernel.org> References: <20260705213542.28987-1-laurent.pinchart+renesas@ideasonboard.com> <20260705213542.28987-2-laurent.pinchart+renesas@ideasonboard.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260705213542.28987-2-laurent.pinchart+renesas@ideasonboard.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Mon, Jul 06, 2026 at 12:35:39AM +0300, Laurent Pinchart wrote: > Since DDC version 2, introduced in 1996, VGA monitors have exposed EDID > data over an I2C bus. The bus is also used to detect the presence of a > connected monitor by trying to read the EDID data. > > Some devices where the VGA display is integrated in the device and > always connected do not connect the DDC pins. Some development boards, > such as the Renesas M3N Salvator-XS, also do not connect the DDC pins. > > To support those, add the ability to provide hardcoded EDID data in the > device tree. This is mutually exclusive with specifying a DDC bus, and > can only be done when the VGA display is guaranteed to be always > connected. > > Signed-off-by: Laurent Pinchart > --- > .../bindings/display/connector/vga-connector.yaml | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) There's already 2 (.txt) bindings with the same property, so no issue with adding it. Reviewed-by: Rob Herring (Arm)