From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 87DD2204F8E for ; Tue, 3 Dec 2024 20:16:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=85.214.62.61 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733256970; cv=none; b=E0KIKpR/gEDFNriAXXrXSI14v0shC+V8IwRzoW2FqiNLRQU3xEnuxfH9ov+i6uWdJDHV7do1Vbvr98+818cICRusWZ9x/Rct5VAg7PWZYOnYbT0yYl2TN4XU4e1AGuqWqWZE/WgQNYEj0ZdewHsVKfyCf1lCSSumDDGFdlny8DU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733256970; c=relaxed/simple; bh=7EazdmpYzyzh8UDYXHdIuwEr5lXQVR8Fa3rVvsytmxA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=AWiQX0gA0bUykl6mHOhP3S7RyTOSHKCoXJIMK/mezcZfd/0a8lE1u7bm/pR/Ieljt0UYGeSCU/fULx1AlhRE31UU7Dl1PNcNhjJZsJzE6YxbLYJiWJT+eqwMugCF881bT7y9Af6hReIcV0LeqjvLX5kfevuwqNx/P/GaBV3NA2k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=denx.de; spf=pass smtp.mailfrom=denx.de; dkim=pass (2048-bit key) header.d=denx.de header.i=@denx.de header.b=zfNuEh+Y; arc=none smtp.client-ip=85.214.62.61 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=denx.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=denx.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=denx.de header.i=@denx.de header.b="zfNuEh+Y" Received: from [127.0.0.1] (p578adb1c.dip0.t-ipconnect.de [87.138.219.28]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: marex@denx.de) by phobos.denx.de (Postfix) with ESMTPSA id 5603E8939D; Tue, 3 Dec 2024 21:16:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=denx.de; s=phobos-20191101; t=1733256966; bh=HFPgWtx/TvkI7sUbV4S3AebYBzGL0Om0FylGOBaC01s=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=zfNuEh+YGm64pqvTE5IVmbBqQHfINNBourjZvZT663OEq7FyAZiJDneSPNUGaT0qS ncK5QiGOEynd24gmprB1IfpzrtbtJbSURmT6Ucr0ka1j6hpi4fBxzswdxc7U5H1ukh XPEKa0oseZw7YL8XDz4LzwozTRg7ftM9o5kq3UCuOEvlHoUZh3dzyYXmHmqyYFmA5W LcmBV4ShDFkiU/RBU+r+VFJvQs4aOsA+gHfQM1Uj6hiRxYRy9/7u874NVPpJ8ONvbi LfVP+CTcaueZwLVe0M6bRuKYXx4WtybumcpWG9PrPxqqXLQTBT4/zqoW+zbJbILPZ5 9LqB1gfX9BfAw== Message-ID: <2d7f8afc-119a-4080-93be-bf3daf017e5e@denx.de> Date: Tue, 3 Dec 2024 21:15:10 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] drm: bridge: fsl-ldb: fixup mode on freq mismatch To: Nikolaus Voss , Alexander Stein , Liu Ying , Luca Ceresoli , Fabio Estevam , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , David Airlie , Daniel Vetter , miquel.raynal@bootlin.com, nikolaus.voss@haag-streit.com Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20241203191111.47B56F7@mail.steuer-voss.de> Content-Language: en-US From: Marek Vasut In-Reply-To: <20241203191111.47B56F7@mail.steuer-voss.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean On 12/3/24 8:09 PM, Nikolaus Voss wrote: > LDB clock has to be a fixed multiple of the pixel clock. > As LDB and pixel clock are derived from different clock sources Can you please share the content of /sys/kernel/debug/clk/clk_summary ? LDB and matching LCDIF should use the same PLL on MX8MP , else you might really run into odd issues.