From patchwork Sat Aug 25 08:56:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Rosin X-Patchwork-Id: 962146 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=axentia.se Authentication-Results: ozlabs.org; dkim=fail reason="key not found in DNS" (0-bit key; unprotected) header.d=axentia.se header.i=@axentia.se header.b="ZAnEKcgz"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41yBpX55wdz9s3Z for ; Sat, 25 Aug 2018 18:56:36 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726419AbeHYMew (ORCPT ); Sat, 25 Aug 2018 08:34:52 -0400 Received: from mail-eopbgr50130.outbound.protection.outlook.com ([40.107.5.130]:53664 "EHLO EUR03-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725815AbeHYMew (ORCPT ); Sat, 25 Aug 2018 08:34:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axentia.se; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=u2XpuqSLsK9LhIb5uTzDwCeIMadHloaP2FWW7uqpLGM=; b=ZAnEKcgzvj6m6F2nQV782nKrWDN2klv/PP6PtONeYTw8cBsL4HIozzQF0EEcWNRDK0PxG234rPh60K/nsPJd4l0QClQAIlkCsAiHljhY95aU1PpwbGEmnwBg2o8FtLDfMxVO+2GUigWu94MnxsYoJ36FaqtMlsPJ2dtOBuVw6Zc= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=peda@axentia.se; Received: from orc.pedanet (85.226.244.23) by VI1PR0201MB2463.eurprd02.prod.outlook.com (2603:10a6:800:54::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1080.13; Sat, 25 Aug 2018 08:56:29 +0000 From: Peter Rosin To: linux-kernel@vger.kernel.org Cc: Peter Rosin , Boris Brezillon , David Airlie , Rob Herring , Mark Rutland , Nicolas Ferre , Alexandre Belloni , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jyri Sarha , Daniel Vetter , Andrzej Hajda , Russell King - ARM Linux , Jacopo Mondi , Sakari Ailus Subject: [PATCH v9 0/4] drm/atmel-hlcdc: bus-width override support Date: Sat, 25 Aug 2018 10:56:16 +0200 Message-Id: <20180825085620.10566-1-peda@axentia.se> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 X-Originating-IP: [85.226.244.23] X-ClientProxiedBy: DB6PR01CA0040.eurprd01.prod.exchangelabs.com (2603:10a6:6:46::17) To VI1PR0201MB2463.eurprd02.prod.outlook.com (2603:10a6:800:54::23) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 92b04544-cf44-42dc-74c9-08d60a68a6c0 X-Microsoft-Antispam: BCL:0; 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The background for these patches is that our PCB interface between the SAMA5D3 and the ds90c185 lvds encoder is only using 16 bits, and this has to be described somewhere, or the atmel-hlcdc driver have no chance of selecting the correct output mode. Since we have similar problems with a tda19988 HDMI encoder I added patches to override the atmel-hlcdc output format via DT properties compatible with the media video-interface binding and things start to play together. Cheers, Peter Changes since v8 https://lkml.org/lkml/2018/8/10/309 - go back to the solution in v7 (but the ep device_node leak fixed) for patch 4/4 - redo (part of) 3/4 w/o using the disliked of_graph_parse_endpoint Changes since v7 https://lkml.org/lkml/2018/8/4/288 - The ep device_node was leaked in v7 patch 3/3, so add patch 3/4 which simplifies fixing this in patch 4/4 (and adds flexibility) and adjust patch 4/4 to the changes done in the new 3/4. - return -ENOMEM on allocation failure in patch 4/4 Changes since v6 https://lkml.org/lkml/2018/8/3/333 - zap bus-type from the binding in patch 2/3 Changes since (the shortened) v5 https://lkml.org/lkml/2018/8/3/182 - add reg properties (and #*-cells) to the example in patch 2/3 - prohibit bus-width 0 in the device-tree in patch 3/3 - added reviewed-by from Jacopo to patch 2/3 and 3/3 Peter Rosin (4): dt-bindings: display: bridge: lvds-transmitter: add ti,ds90c185 dt-bindings: display: atmel: optional video-interface of endpoints drm/atmel-hlcdc: always iterate over the first 4 output endpoints drm/atmel-hlcdc: support bus-width (12/16/18/24) in endpoint nodes .../devicetree/bindings/display/atmel/hlcdc-dc.txt | 23 ++++++ .../bindings/display/bridge/lvds-transmitter.txt | 8 +- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_crtc.c | 70 +++++++++++----- drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.h | 1 + drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_output.c | 92 +++++++++++++++++++--- 5 files changed, 163 insertions(+), 31 deletions(-)