From patchwork Thu Mar 6 09:11:31 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "A. Zini" X-Patchwork-Id: 14005163 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 5543AC282D1 for ; Thu, 6 Mar 2025 18:35:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5B9AB10EA65; Thu, 6 Mar 2025 18:35:35 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=siemens.com header.i=alessandro.zini@siemens.com header.b="Af/Yq6H1"; dkim-atps=neutral X-Greylist: delayed 602 seconds by postgrey-1.36 at gabe; Thu, 06 Mar 2025 09:21:45 UTC Received: from mta-64-226.siemens.flowmailer.net (mta-64-226.siemens.flowmailer.net [185.136.64.226]) by gabe.freedesktop.org (Postfix) with ESMTPS id 258D110E91C for ; Thu, 6 Mar 2025 09:21:45 +0000 (UTC) Received: by mta-64-226.siemens.flowmailer.net with ESMTPSA id 2025030609113487d3306ddd8a0962f9 for ; Thu, 06 Mar 2025 10:11:35 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm1; d=siemens.com; i=alessandro.zini@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc; bh=551wx5oTEqfZyjay5LJbEZtGjB9vzpZh1VRl3hD8kLg=; b=Af/Yq6H1MQjdSf52ulEnsWhK6tfSzLeb/Lz3pfIb8I4aRvtYEdIVh2CglTXnHtnS7QKRXZ AsXlbKT7ImaVTPTT/2H8rUJcXLpNdtCU6gtJ931JJgdkXUx4vZ2fh7bBEG65d47/+MGWi4yY MSe0whRMPE8sG0XVYxKYkIIbcgsZSmTOlAKlX4fgJGnovt96hLCJsBLvRh7cJRbmhiHzV0T7 zzdFNZ73Fe4XSSbN/5/P3euVbusEtY79E5D0OVanGv4/K4Z4Sakf5i70W0HW2lbXHBQUkPXV NhRKDE8zIhgbJH3hxQ3bRPhaNIpGhrI50eJqX3CN1iLgSnCBd/ByGt5g==; From: "A. Zini" To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Marek Vasut Cc: Andrej Picej , Dmitry Baryshkov , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, Alessandro Zini Subject: [PATCH 0/2] Introduce h/vsync-disable properties for ti-sn65dsi83 Date: Thu, 6 Mar 2025 10:11:31 +0100 Message-ID: <20250306091133.46888-1-alessandro.zini@siemens.com> MIME-Version: 1.0 X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-1327013:519-21489:flowmailer X-Mailman-Approved-At: Thu, 06 Mar 2025 18:35:34 +0000 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" From: Alessandro Zini This patch series adds support for disabling the generation of h/vsync signals on the ti-sn65dsi83 bridge. This is required on some panels which are driven in DE-only mode but do not ignore sync packets, and instead require them to be low-voltage level or ground. A discussion (1) on TI's E2E forum confirms that this may be required for some panels. (1) https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1475734/sn65dsi84-disable-hsync-and-vsync Alessandro Zini (2): dt-bindings: drm/bridge: ti-sn65dsi83: add h/vsync-disable bindings drm/bridge: ti-sn65dsi83: add h/vsync-disable support .../bindings/display/bridge/ti,sn65dsi83.yaml | 12 ++++++++++++ drivers/gpu/drm/bridge/ti-sn65dsi83.c | 16 ++++++++++++++-- 2 files changed, 26 insertions(+), 2 deletions(-)