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 6D0CAE83050 for ; Tue, 3 Feb 2026 04:48:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 260E010E51B; Tue, 3 Feb 2026 04:48:16 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="IDdEx/Bs"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1D59A10E214; Tue, 3 Feb 2026 04:48:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1770094094; x=1801630094; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Qy06vpUBaNwqtigsU+9NN3kCZQC35lPYa4a0GF66Acg=; b=IDdEx/BsIuIEY249TJLSVG4EeKjlBIBcpcbVmW7tB/BEStJx3Knw165P iP0p2xMtiioVx3CkGWnGITroxg6AZbtTLUys1gjxJlsrajC7qXKwM605V yotsQExVwsAkraszeaeqrfg0fuuO3aSRqz7MW/UBR6ifdMfRLS2WQbWKg Yq74bP27rP8rfpkH+Zr2S+UO2KigsA4ZgVi2aKi2gZ46Tul9tCg1F9HjR HXCTh3S6jCyhnt7/1mL6pdICQWudAeC09V3p0e3KpIxln4NUuZhzDxWvo 3CGkXeYuPdwxhUd2hHPdUIy3XDhYeQas6IIrbS06FmyUPgwAUU1jMG4HN Q==; X-CSE-ConnectionGUID: b4S64VfRQyy7U04bl0hVwQ== X-CSE-MsgGUID: nj1bvF3JSRWmudEjdpnsdQ== X-IronPort-AV: E=McAfee;i="6800,10657,11690"; a="82629680" X-IronPort-AV: E=Sophos;i="6.21,270,1763452800"; d="scan'208";a="82629680" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Feb 2026 20:48:12 -0800 X-CSE-ConnectionGUID: UjkTFb6SQFyMyUcmnm/aIQ== X-CSE-MsgGUID: njK9kpV9TnOyTYg2F2CUEQ== X-ExtLoop1: 1 Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by fmviesa003-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Feb 2026 20:48:10 -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 v2 2/4] drm/i915/vrr: Avoid vrr for PCON with HDMI2.1 sink Date: Tue, 3 Feb 2026 10:02:30 +0530 Message-ID: <20260203043230.559350-1-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. (vrr) 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