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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 0D917C2BA19 for ; Wed, 15 Apr 2020 09:53:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id DEA3E20784 for ; Wed, 15 Apr 2020 09:53:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DEA3E20784 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ravnborg.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 41B5F6E933; Wed, 15 Apr 2020 09:53:29 +0000 (UTC) Received: from asavdk4.altibox.net (asavdk4.altibox.net [109.247.116.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4CBC06E933 for ; Wed, 15 Apr 2020 09:53:28 +0000 (UTC) Received: from ravnborg.org (unknown [158.248.194.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by asavdk4.altibox.net (Postfix) with ESMTPS id 2CE808046E; Wed, 15 Apr 2020 11:53:26 +0200 (CEST) Date: Wed, 15 Apr 2020 11:53:24 +0200 From: Sam Ravnborg To: Dmitry Osipenko , Laurent Pinchart Subject: Re: [PATCH v2 0/2] Support DRM bridges on NVIDIA Tegra Message-ID: <20200415095324.GB30444@ravnborg.org> References: <20200414222007.31306-1-digetx@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200414222007.31306-1-digetx@gmail.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=XpTUx2N9 c=1 sm=1 tr=0 a=UWs3HLbX/2nnQ3s7vZ42gw==:117 a=UWs3HLbX/2nnQ3s7vZ42gw==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=kj9zAlcOel0A:10 a=f6-GpgHWSS8o9bTNT1UA:9 a=CjuIK1q_8ugA:10 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: , Cc: linux-tegra@vger.kernel.org, Thierry Reding , dri-devel@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi Dimitry. Added Laurent that is the arthitecht behind the new bridge model briefly explained below. On Wed, Apr 15, 2020 at 01:20:05AM +0300, Dmitry Osipenko wrote: > Hello, > > This small series adds initial support for the DRM bridges to NVIDIA Tegra > DRM driver. This is required by newer device-trees where we model the LVDS > encoder bridge properly. > > Please note that the first "Support DRM bridges" patch was previously sent > out as a standalone v1 change. > > Changelog: > > v2: - Added the new "rgb: Don't register connector if bridge is used" > patch, which hides the unused connector provided by the Tegra DRM > driver when bridge is used, since bridge provides its own connector > to us. We are moving to a model where the display driver have the responsibility to create the connector - not the bridge. The flags argument to: drm_bridge_attach(encoder, bridge, previous, flags); is used to tell if the brigde shall create the connector or the display driver does it - DRM_BRIDGE_ATTACH_NO_CONNECTOR. It would be preferred that we moved the relevant bridge drivers to the new model no so you did not need to support the old model in the driver. If you help identify the bridge drivers we could migrate them to the new model and you could help testing? What bridge drivers will be used for tegra? Sam _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel