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 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 9E35FCF855E for ; Thu, 20 Nov 2025 08:52:36 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 34F4D10E715; Thu, 20 Nov 2025 08:52:36 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="gJwh8VEO"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id A00C110E715; Thu, 20 Nov 2025 08:52:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763628755; x=1795164755; h=date:from:to:cc:subject:in-reply-to:message-id: references:mime-version:content-id; bh=V5h7IW34xa8jA074DhyYOflrIfEy6U8P0Tcs6tmKGAQ=; b=gJwh8VEO6AniHkLmL7zHBAUl+usB2JSnP/coRmKlR8YlgqFAw2C31r5e 0aLAGYz4Dfy8SgPnTKXuC47nNZ7FgxRXfHouNc/y1LFKFgX3DkRPehNCq sf2Z+wZ5eyL4vsNLvU+VNNLIjZi2pBpJH3IQjWJppRLphznGlQlVWhTU0 7lAegHxqsAuy9G639sK1vCrgsWng4sVmTAWBG60AMnpFJe8TApzjTgtby AvmMDzTK+Ov9sb1OMoaAcUvmd5p9OaucsltXZnUJRLh92hnt+a8hgc//J IGnx3R4nZ3LrPw1Hv86CjziwdBtoVgp3TYw0XWGZZeIIGuTeqbymhvISy A==; X-CSE-ConnectionGUID: k4IFIai3Tiu17tivXAUwBg== X-CSE-MsgGUID: SI9zmqBBQx+nRk4CtwbUlA== X-IronPort-AV: E=McAfee;i="6800,10657,11618"; a="69307474" X-IronPort-AV: E=Sophos;i="6.19,317,1754982000"; d="scan'208";a="69307474" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Nov 2025 00:52:35 -0800 X-CSE-ConnectionGUID: 8gJT7I50QymRrNnps28GJg== X-CSE-MsgGUID: 1IuihjRpQJyHQB1fsKmZCQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,317,1754982000"; d="scan'208";a="228615800" Received: from administrator-system-product-name.igk.intel.com ([10.91.214.181]) by orviesa001.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Nov 2025 00:52:32 -0800 Date: Thu, 20 Nov 2025 09:52:30 +0100 (CET) From: =?ISO-8859-2?Q?Micha=B3_Grzelak?= To: Ankit Nautiyal cc: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, jouni.hogander@intel.com, ville.syrjala@linux.intel.com, animesh.manna@intel.com Subject: Re: [PATCH 3/5] drm/i915/alpm: Allow LOBF only for platform that have Always on VRR TG In-Reply-To: <20251119135152.673276-4-ankit.k.nautiyal@intel.com> Message-ID: <89fee0ca-5c79-7ae9-0042-60e8901615e6@intel.com> References: <20251119135152.673276-1-ankit.k.nautiyal@intel.com> <20251119135152.673276-4-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Content-Type: multipart/mixed; BOUNDARY="8323329-1331651793-1763628003=:275675" Content-ID: <624620ce-5b3b-797a-19bb-395fe60501a8@intel.com> X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --8323329-1331651793-1763628003=:275675 Content-Type: text/plain; CHARSET=ISO-8859-2; format=flowed Content-Transfer-Encoding: 8BIT Content-ID: <2c3eaeb0-02ed-fe6e-231a-5fe7f5efaa58@intel.com> On Wed, 19 Nov 2025, Ankit Nautiyal wrote: > As per bspec the LOBF is allowed when running in fixed refresh rate mode > i.e. when flipline = vmin = vmax and when window1 is non zero. This > implies that we can allow LOBF only when VRR timing generator is running > in the fixed refresh rate mode. > > Use the check intel_vrr_always_use_vrr_tg() to avoid LOBF with legacy > timing generator. Also use intel_vrr_is_fixed_rr() to check for fixed > refresh rate mode. > > v2: Modify commit message to clarify window1 requirement for LOBF. > (Ville) > > Signed-off-by: Ankit Nautiyal Reviewed-by: Micha³ Grzelak BR, Micha³ --8323329-1331651793-1763628003=:275675--