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=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 86B58C433E0 for ; Wed, 20 May 2020 02:48:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 50D0320829 for ; Wed, 20 May 2020 02:48:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589942926; bh=PgpVdWU0GNMRchnHmpGiYCiQjyaUTn2pzx382J/j+gY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=mRBZ1PmsXCyF/5drS5wKpqGlHcd0/wwqPiYiRrABBl/q+JuIIyjs4E/WWQOcd3Pww 85JibDcTsbTTuD7Be/m9hkGIM6DN85Ihvp5YDNASyBOG3Jk/IaGTwvvEKH3IfdsYuL wQajig2HdD8qV0E4PyzEIBXFKx9UJYE84gwpZ5Ps= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728408AbgETCsn (ORCPT ); Tue, 19 May 2020 22:48:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:45890 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726318AbgETCsm (ORCPT ); Tue, 19 May 2020 22:48:42 -0400 Received: from dragon (80.251.214.228.16clouds.com [80.251.214.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 33FCB20578; Wed, 20 May 2020 02:48:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1589942922; bh=PgpVdWU0GNMRchnHmpGiYCiQjyaUTn2pzx382J/j+gY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Hpq85SNwch7/Gzo34hPTmn+TNxynle/kDED3bfOky0+zVRpNN5axZE8mKSgu4km1L YGikQ61RMufrW4q7leUjfYIPbml+U8wytN/7hgMzhiI238MeSaH/jRwo/bqRzKpu58 uoXS+UjeoOFg119Od8jXwLW6h5J2UPHykMWuWAlI= Date: Wed, 20 May 2020 10:48:36 +0800 From: Shawn Guo To: Sebastian Reichel Cc: Sebastian Reichel , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Rob Herring , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Robert Beckett , stable@vger.kernel.org, Ian Ray Subject: Re: [PATCHv1] ARM: dts/imx6q-bx50v3: Set display interface clock parents Message-ID: <20200520024835.GS11739@dragon> References: <20200514170236.24814-1-sebastian.reichel@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200514170236.24814-1-sebastian.reichel@collabora.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Thu, May 14, 2020 at 07:02:37PM +0200, Sebastian Reichel wrote: > From: Robert Beckett > > Avoid LDB and IPU DI clocks both using the same parent. LDB requires > pasthrough clock to avoid breaking timing while IPU DI does not. > > Force IPU DI clocks to use IMX6QDL_CLK_PLL2_PFD0_352M as parent > and LDB to use IMX6QDL_CLK_PLL5_VIDEO_DIV. > > This fixes an issue where attempting atomic modeset while using > HDMI and display port at the same time causes LDB clock programming > to destroy the programming of HDMI that was done during the same > modeset. > > Cc: stable@vger.kernel.org > Signed-off-by: Robert Beckett > [Use IMX6QDL_CLK_PLL2_PFD0_352M instead of IMX6QDL_CLK_PLL2_PFD2_396M > originally chosen by Robert Beckett to avoid affecting eMMC clock > by DRM atomic updates] > Signed-off-by: Ian Ray > [Squash Robert's and Ian's commits for bisectability, update patch > description and add stable tag] > Signed-off-by: Sebastian Reichel Applied, thanks.