From patchwork Wed Aug 18 18:10:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 12444963 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC966C4338F for ; Wed, 18 Aug 2021 18:12:31 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8E7A660E09 for ; Wed, 18 Aug 2021 18:12:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8E7A660E09 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1C7E06E8AC; Wed, 18 Aug 2021 18:12:31 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3AD6D6E8B3 for ; Wed, 18 Aug 2021 18:12:29 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10080"; a="214547443" X-IronPort-AV: E=Sophos;i="5.84,332,1620716400"; d="scan'208";a="214547443" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2021 11:12:28 -0700 X-IronPort-AV: E=Sophos;i="5.84,332,1620716400"; d="scan'208";a="423759091" Received: from jcarwana-mobl1.amr.corp.intel.com (HELO localhost) ([10.249.42.192]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2021 11:12:25 -0700 From: Jani Nikula To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, manasi.d.navare@intel.com, ville.syrjala@linux.intel.com Date: Wed, 18 Aug 2021 21:10:48 +0300 Message-Id: <55a0b34ef28d035cad56b9e0c1886b5a12d18032.1629310010.git.jani.nikula@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Subject: [Intel-gfx] [PATCH 13/17] drm/i915/dp: select 128b/132b channel encoding for UHBR rates 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" UHBR rates and 128b/132b channel encoding go hand in hand. Reviewed-by: Manasi Navare Signed-off-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_dp_link_training.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c index 031c753fca56..01f0adc585d0 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c @@ -495,7 +495,8 @@ intel_dp_prepare_link_train(struct intel_dp *intel_dp, &rate_select, 1); link_config[0] = crtc_state->vrr.enable ? DP_MSA_TIMING_PAR_IGNORE_EN : 0; - link_config[1] = DP_SET_ANSI_8B10B; + link_config[1] = crtc_state->port_clock > 1000000 ? + DP_SET_ANSI_128B132B : DP_SET_ANSI_8B10B; drm_dp_dpcd_write(&intel_dp->aux, DP_DOWNSPREAD_CTRL, link_config, 2); intel_dp->DP |= DP_PORT_EN;