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 47378FE51F3 for ; Fri, 24 Apr 2026 09:24:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 05E8F10E200; Fri, 24 Apr 2026 09:24:28 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="nV0RU1vA"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id E471810E200; Fri, 24 Apr 2026 09:24:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1777022667; x=1808558667; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=6w4ChAG+Hp3+lteqHVSks16P8x1jHexjCgUGVQruIHc=; b=nV0RU1vAwOObCvoEIEgcR2vnbgrdkvBDL4Wzk/M/JPdlp3bIrothhy8r 49o8YOFX1mfO9zUu3lOYai6HdOi6FDu1aWkjyVf/iHmAxNnvlGhxGUt/v IpQ1bryF7eRPg1i+Sc2YoAPF5psMksj4MwysFZtsis+5PI490D/d85Ark gInZPA7I3qmyK+PBtODHwS/idiNYToeEZutlTQTG+TgwMIplBCsbl5/qn W+NcP6Bu3TdFcv4Jad8ZSSQKh/wfK66yrLgswCGeZuP68C7Y9PFyAP5lX YUWdYQ+fSvnhB//YTLYSSzAp2wKNnUFmjfpn15iTN35aEeSZhgTxJb58y w==; X-CSE-ConnectionGUID: c449JPeNT9qiPxrV/6lSRg== X-CSE-MsgGUID: aj/mdhwDSJOT7IDXkn7hhA== X-IronPort-AV: E=McAfee;i="6800,10657,11765"; a="81607525" X-IronPort-AV: E=Sophos;i="6.23,196,1770624000"; d="scan'208";a="81607525" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2026 02:24:27 -0700 X-CSE-ConnectionGUID: 2UnzrvJORMS4cQE/v+tvwA== X-CSE-MsgGUID: AAWakvyLTqq+Op7jNjJUfA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,196,1770624000"; d="scan'208";a="271029282" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2026 02:24:26 -0700 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: ville.syrjala@linux.intel.com, Ankit Nautiyal Subject: [PATCH 1/3] drm/i915/vrr: Avoid vrr for PCON with HDMI2.1 sink Date: Fri, 24 Apr 2026 14:39:40 +0530 Message-ID: <20260424090942.3060291-2-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260424090942.3060291-1-ankit.k.nautiyal@intel.com> References: <20260424090942.3060291-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 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 Reviewed-by: Ville Syrjälä --- 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 fae1186a90b2..1b09992ce9fd 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