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 X-Spam-Level: X-Spam-Status: No, score=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 87020C4363C for ; Wed, 7 Oct 2020 08:40:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3175C2083B for ; Wed, 7 Oct 2020 08:40:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726702AbgJGIk3 (ORCPT ); Wed, 7 Oct 2020 04:40:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726041AbgJGIk3 (ORCPT ); Wed, 7 Oct 2020 04:40:29 -0400 Received: from mail-out.m-online.net (mail-out.m-online.net [IPv6:2001:a60:0:28:0:1:25:1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EE83C061755 for ; Wed, 7 Oct 2020 01:40:29 -0700 (PDT) Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4C5nph0gQVz1rwZx; Wed, 7 Oct 2020 10:40:28 +0200 (CEST) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4C5npg6rFkz1qrgK; Wed, 7 Oct 2020 10:40:27 +0200 (CEST) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id 1srEJkgDHoi1; Wed, 7 Oct 2020 10:40:26 +0200 (CEST) X-Auth-Info: MKrpgmAK/1ibrtG5F7pcXywmEVavczhdkYTHpiNkXqg= Received: from [IPv6:::1] (p578adb1c.dip0.t-ipconnect.de [87.138.219.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Wed, 7 Oct 2020 10:40:26 +0200 (CEST) Subject: Re: [PATCH v2 3/7] dt-bindings: display: mxsfb: Add a bus-width endpoint property To: Laurent Pinchart , dri-devel@lists.freedesktop.org Cc: Stefan Agner , devicetree@vger.kernel.org, =?UTF-8?Q?Guido_G=c3=bcnther?= , Rob Herring , Pengutronix Kernel Team , linux-arm-kernel@lists.infradead.org References: <20201007012438.27970-1-laurent.pinchart@ideasonboard.com> <20201007012438.27970-4-laurent.pinchart@ideasonboard.com> From: Marek Vasut Message-ID: <7b8df7af-5ca8-708b-4975-2fdf4280116f@denx.de> Date: Wed, 7 Oct 2020 10:40:26 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 In-Reply-To: <20201007012438.27970-4-laurent.pinchart@ideasonboard.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 10/7/20 3:24 AM, Laurent Pinchart wrote: [...] > + bus-width: > + enum: [16, 18, 24] > + description: | > + The output bus width. This value overrides the configuration > + derived from the connected device (encoder or panel). It should > + only be specified when PCB routing of the data signals require a > + different bus width on the LCDIF and the connected device. For > + instance, when a 18-bit RGB panel has its R[5:0], G[5:0] and > + B[5:0] signals connected to LCD_DATA[7:2], LCD_DATA[15:10] and > + LCD_DATA[23:18] instead of LCD_DATA[5:0], LCD_DATA[11:6] and > + LCD_DATA[17:12], bus-width should be set to 24. The iMX6 IPUv3 uses interface-pix-fmt which is a bit more flexible, but I'm not sure whether it's the right way to go about this, see: Documentation/devicetree/bindings/display/imx/fsl-imx-drm.txt