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 E4DFDE83060 for ; Tue, 3 Feb 2026 08:23:01 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A879110E586; Tue, 3 Feb 2026 08:23:01 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="FY4u/y4O"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6274A10E569; Tue, 3 Feb 2026 08:22:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770106979; x=1801642979; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=DietvwbJGUgfKYE5oigHP37JP6WbYEW3rND+snnLB8w=; b=FY4u/y4O3WhJrnveQNtSaKTvDg+wXZLEZDby4y5lqePfI521qdcBi9XW QrvjEO1InknMqu0ewFaQRlAkpxhRhU4nhBVw41D6Ts9ja4Qc44H5L6A2o YSXYMIQfFWrIWoBBr2J2/mM2tGpYl3iGdwGxEFOPnKQUPjoHHXxbZZmMX DCJ7uXfp+FSAvFvlCXf+pTl9Hcs1FL/Sd/LGVB7WpayX26keW++MlL6j+ qBAE43tr9IsdCr/n92ORX8Ti11kclKrs0hKcaG4A7AnM29ahP7Jnu/Gku t0RZ8LYPiguQf7XcdD1KvSCbxfv1woClBin1IHZ1eWWTcvO6yGnHb4BIz A==; X-CSE-ConnectionGUID: 3RfyN22HS6iZF8T3BfguLA== X-CSE-MsgGUID: yRyQnuLlTaKRU7AZPYvtmA== X-IronPort-AV: E=McAfee;i="6800,10657,11690"; a="82381352" X-IronPort-AV: E=Sophos;i="6.21,270,1763452800"; d="scan'208";a="82381352" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2026 00:22:59 -0800 X-CSE-ConnectionGUID: lNHEvY1eRBirwbrqrJrxtg== X-CSE-MsgGUID: DuPRq2wBR++DUfbJ+XZWYQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,270,1763452800"; d="scan'208";a="209069013" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2026 00:22:58 -0800 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: ville.syrjala@linux.intel.com, Ankit Nautiyal Subject: [PATCH v3 2/4] drm/i915/vrr: Avoid vrr for PCON with HDMI2.1 sink Date: Tue, 3 Feb 2026 13:37:16 +0530 Message-ID: <20260203080716.559932-1-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20251111093007.3771409-3-ankit.k.nautiyal@intel.com> References: <20251111093007.3771409-3-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 9d814cc2d608..c57328b76f26 100644 --- a/drivers/gpu/drm/i915/display/intel_vrr.c +++ b/drivers/gpu/drm/i915/display/intel_vrr.c @@ -54,6 +54,16 @@ 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