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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 35635EB64DD for ; Wed, 5 Jul 2023 05:31:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230254AbjGEFbE (ORCPT ); Wed, 5 Jul 2023 01:31:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53174 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229838AbjGEFbD (ORCPT ); Wed, 5 Jul 2023 01:31:03 -0400 Received: from mail-yb1-xb2c.google.com (mail-yb1-xb2c.google.com [IPv6:2607:f8b0:4864:20::b2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8252BE5 for ; Tue, 4 Jul 2023 22:31:02 -0700 (PDT) Received: by mail-yb1-xb2c.google.com with SMTP id 3f1490d57ef6-c11e2b31b95so6959025276.3 for ; Tue, 04 Jul 2023 22:31:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; t=1688535061; x=1691127061; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=hhZT6HGQXrVs8HZ8Yfrd/PZq4RDzl4JlYHbBSawlJgI=; b=R5OVgpIC90iWV3nWzt2HXZGAIvsOeD/ei/ifmVZdzx6b4rVqE8L79w94X/5VBCpfQ1 hPrCtKY1IzJm8mwCi4kDeLrfwlk3Ip3KPawv70AgPxJjDEKJRueNME6H9QNikl3J6/j4 bMMnID1Wxnw6A56aOLw7sDJeGDDD6ikNpJQFk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1688535061; x=1691127061; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=hhZT6HGQXrVs8HZ8Yfrd/PZq4RDzl4JlYHbBSawlJgI=; b=ZRNdn7NSvHHbhOxUPNSlvrHBl22reQ14Vd/xvl/N0OnVHOP29FT5S/f2WzvvXHbwu2 VWDBWh8Ym4rywVG9G4Ak/e0ClJiDoOBblJe96GQQJSFO5QhkTOISlVmE0/xjy1JLMNW9 JwqadMPEpfeVRMDXDIPY1QzcpcraeoKe5w70Kht+PdjD4s9L9KPCBUOrgxpJV1HlFYyH xZ/OmKj02rH5tgUHUrr8h2n185hN0A80Ih/QWLp6kuOIogZVqRF0H0Kp+PDTW7j1EoWf ptr4dO2ZX02tbBzR5a6WXm4Ilwxu8THK6ftNDcqLcW6FD3Mcf4uF0VUsbXjHWceH7WH3 E+lg== X-Gm-Message-State: ABy/qLZGZ3Q74u/UKcqbxtmrNUttJvXdSbKgCUqHkEakDSVf9flfZ13+ JUL3AmUfp7+DCNbRbD8BgRuo7ipb5AWvx7nGJ6qOfA== X-Google-Smtp-Source: APBJJlGhxcdbaq6knM24Q2XbhP4OqN8lqf9RuZf+WpretMgSEJbM954+clOOc+Jp7/XBlDYvX88W3zII7F/VAeLDgx0= X-Received: by 2002:a5b:5c8:0:b0:c63:7758:701f with SMTP id w8-20020a5b05c8000000b00c637758701fmr355911ybp.65.1688535061715; Tue, 04 Jul 2023 22:31:01 -0700 (PDT) MIME-Version: 1.0 References: <20230403221233.500485-1-marex@denx.de> <20230403221233.500485-2-marex@denx.de> In-Reply-To: From: Jagan Teki Date: Wed, 5 Jul 2023 11:00:49 +0530 Message-ID: Subject: Re: [PATCH 2/2] drm/bridge: lt9611: Do not generate HFP/HBP/HSA and EOT packet To: Amit Pundir Cc: Marek Vasut , dri-devel@lists.freedesktop.org, Neil Armstrong , Robert Foss , Andrzej Hajda , Jonas Karlman , Jernej Skrabec , Michael Walle , Laurent Pinchart , Dmitry Baryshkov , linux-arm-msm , Linux regressions mailing list Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Hi Amit, On Wed, Jul 5, 2023 at 10:15=E2=80=AFAM Amit Pundir wrote: > > Hi Marek, > > On Wed, 5 Jul 2023 at 01:48, Marek Vasut wrote: > > > > Do not generate the HS front and back porch gaps, the HSA gap and > > EOT packet, as these packets are not required. This makes the bridge > > work with Samsung DSIM on i.MX8MM and i.MX8MP. > > This patch broke display on Dragonboard 845c (SDM845) devboard running > AOSP. This is what I see > https://people.linaro.org/~amit.pundir/db845c-userdebug/v6.5-broken-displ= ay/PXL_20230704_150156326.jpg. > Reverting this patch fixes this regression for me. Might be msm dsi host require proper handling on these updated mode_flags? did they? Thanks, Jagan.