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 228FCEA4FC1 for ; Mon, 23 Feb 2026 14:00:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D066910E3DE; Mon, 23 Feb 2026 14:00:11 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="K2ZzTIhj"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9943D10E3E1; Mon, 23 Feb 2026 14:00:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771855205; x=1803391205; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=NA444oKFd6SCqmUXkkli1TzcdIM/CCNMW/U70vL4rIU=; b=K2ZzTIhj+CjbVdFJY0W6MWBLcoKhJrgfpcqEalTZnMtT2NWD/tEr8qh9 +qz+BrvWfmIfeLPm8JNL+JQRwH18osyXcOZ1WyQLBM5HctJoghbCNr653 4yNDelb+CkHYmznk4oZ7smcPR8SusJtaMtIsBvu+9EbPFKMtI+bXWRL3u CzOSaMUMkAWWxuNkcuoInS6qSGSfgN8HnKMau8PZtXg9W+FW7GSmXhvPa FrtnFyeklpI16P8vBejLuzVqv1VyrfYqGfMTGE9J5X4Y/69NSm5v0yHtG MpL+Pc7OXF8slsMmDpnZbo7M4IqbdW3aVnx+JBrnGt+vVGtLt98+DX3C4 Q==; X-CSE-ConnectionGUID: uojYOEekRlWqPJH6nbSjMw== X-CSE-MsgGUID: mL1Ai+rZS3iYvLEg8+/MNA== X-IronPort-AV: E=McAfee;i="6800,10657,11709"; a="72827034" X-IronPort-AV: E=Sophos;i="6.21,306,1763452800"; d="scan'208";a="72827034" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2026 06:00:05 -0800 X-CSE-ConnectionGUID: IUS0kAI3SY6x9fI4YYQs3A== X-CSE-MsgGUID: 85NAmobySAam0+VJilu4fQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,306,1763452800"; d="scan'208";a="212961170" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2026 06:00:03 -0800 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: ville.syrjala@linux.intel.com, jouni.hogander@intel.com, animesh.manna@intel.com, Ankit Nautiyal Subject: [PATCH 02/14] drm/i915/vrr: Avoid vrr for PCON with HDMI2.1 sink Date: Mon, 23 Feb 2026 19:14:19 +0530 Message-ID: <20260223134431.1639308-3-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260223134431.1639308-1-ankit.k.nautiyal@intel.com> References: <20260223134431.1639308-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Currently we do not support VRR with HDMI so skip vrr compute config step for all DP branch devices. v2: Restrict VRR on all DP branch devices instead for checking only for HDMI. (Ville) Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_vrr.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c index 00ca76dbdd6c..c1d8b32ef42f 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -55,6 +55,16 @@ bool intel_vrr_is_capable(struct intel_connector *connector) if (connector->mst.dp) return false; intel_dp = intel_attached_dp(connector); + /* + * Among non-MST DP branch devices, only an HDMI 2.1 sink connected + * via a PCON could support VRR. However, supporting VRR through a + * PCON requires non-trivial changes that are not implemented yet. + * Until that support exists, avoid VRR on all DP branch devices. + * + * TODO: Add support for VRR for DP->HDMI 2.1 PCON. + */ + if (drm_dp_is_branch(intel_dp->dpcd)) + return false; if (!drm_dp_sink_can_do_video_without_timing_msa(intel_dp->dpcd)) return false; -- 2.45.2