From patchwork Mon Mar 30 12:23:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Lisovskiy, Stanislav" X-Patchwork-Id: 11465445 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0D33D1392 for ; Mon, 30 Mar 2020 12:27:53 +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 EA2C320714 for ; Mon, 30 Mar 2020 12:27:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EA2C320714 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E22D96E290; Mon, 30 Mar 2020 12:27:51 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7BEB46E28E for ; Mon, 30 Mar 2020 12:27:48 +0000 (UTC) IronPort-SDR: gZygZJswywBTRA0bI0bEUGN/Y4asDj0Np3ZWzbAihPP8m8ku8Zl6n7db5kKalRuU4h3VrjPGPv PbzlmXVi962g== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2020 05:27:48 -0700 IronPort-SDR: kxJPLglrUOkU3JvwIaC35jSKKVEjZO7RR700/Hqx9y5ZEN9u2zoFnGadX+RIsQ53qk2uJ7rp3p s53K9+5a6omw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,324,1580803200"; d="scan'208";a="248684202" Received: from unknown (HELO slisovsk-Lenovo-ideapad-720S-13IKB.fi.intel.com) ([10.237.72.89]) by orsmga003.jf.intel.com with ESMTP; 30 Mar 2020 05:27:46 -0700 From: Stanislav Lisovskiy To: intel-gfx@lists.freedesktop.org Date: Mon, 30 Mar 2020 15:23:54 +0300 Message-Id: <20200330122354.24752-6-stanislav.lisovskiy@intel.com> X-Mailer: git-send-email 2.24.1.485.gad05a3d8e5 In-Reply-To: <20200330122354.24752-1-stanislav.lisovskiy@intel.com> References: <20200330122354.24752-1-stanislav.lisovskiy@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v3 5/5] drm/i915: Remove unneeded hack now for CDCLK 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" No need to bump up CDCLK now, as it is now correctly calculated, accounting for DBuf BW as BSpec says. Signed-off-by: Stanislav Lisovskiy --- drivers/gpu/drm/i915/display/intel_cdclk.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_cdclk.c b/drivers/gpu/drm/i915/display/intel_cdclk.c index 036774e7f3ec..13e7ea6f471e 100644 --- a/drivers/gpu/drm/i915/display/intel_cdclk.c +++ b/drivers/gpu/drm/i915/display/intel_cdclk.c @@ -2077,18 +2077,6 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state) /* Account for additional needs from the planes */ min_cdclk = max(intel_planes_min_cdclk(crtc_state), min_cdclk); - /* - * HACK. Currently for TGL platforms we calculate - * min_cdclk initially based on pixel_rate divided - * by 2, accounting for also plane requirements, - * however in some cases the lowest possible CDCLK - * doesn't work and causing the underruns. - * Explicitly stating here that this seems to be currently - * rather a Hack, than final solution. - */ - if (IS_TIGERLAKE(dev_priv)) - min_cdclk = max(min_cdclk, (int)crtc_state->pixel_rate); - /* * Similar story as with skl_write_plane_wm and intel_enable_sagv * - in some certain driver parts, we don't have any guarantee that