From patchwork Fri Sep 11 12:23:07 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sagar.a.kamble@intel.com X-Patchwork-Id: 7160421 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9B4CA9FBE7 for ; Fri, 11 Sep 2015 12:21:51 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CC5DB20805 for ; Fri, 11 Sep 2015 12:21:50 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 0473D20826 for ; Fri, 11 Sep 2015 12:21:50 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 88D2B6E3F5; Fri, 11 Sep 2015 05:21:49 -0700 (PDT) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id 6FA506E409 for ; Fri, 11 Sep 2015 05:21:48 -0700 (PDT) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga103.jf.intel.com with ESMTP; 11 Sep 2015 05:21:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,511,1437462000"; d="scan'208";a="767008432" Received: from sakamble-desktop.iind.intel.com ([10.223.82.56]) by orsmga001.jf.intel.com with ESMTP; 11 Sep 2015 05:21:47 -0700 From: Sagar Arun Kamble To: intel-gfx@lists.freedesktop.org Date: Fri, 11 Sep 2015 17:53:07 +0530 Message-Id: <1441974188-1631-2-git-send-email-sagar.a.kamble@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1441974188-1631-1-git-send-email-sagar.a.kamble@intel.com> References: <1441974188-1631-1-git-send-email-sagar.a.kamble@intel.com> Cc: Akash Goel Subject: [Intel-gfx] [PATCH 2/3] drm/i915: WaRsDoubleRc6WrlWithCoarsePowerGating X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Cc: Tom O'Rourke Cc: Akash Goel Signed-off-by: Sagar Arun Kamble --- drivers/gpu/drm/i915/intel_pm.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6e4818d..4d6bb6b 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4830,7 +4830,13 @@ static void gen9_enable_rc6(struct drm_device *dev) I915_WRITE(GEN6_RC_CONTROL, 0); /* 2b: Program RC6 thresholds.*/ - I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16); + + /* WaRsDoubleRc6WrlWithCoarsePowerGating: Doubling WRL only when CPG is enabled */ + if (IS_SKYLAKE(dev) && !((IS_SKL_GT3(dev) || IS_SKL_GT4(dev)) && + (INTEL_REVID(dev) <= SKL_REVID_E0))) + I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 108 << 16); + else + I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 54 << 16); I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000); /* 12500 * 1280ns */ I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */ for_each_ring(ring, dev_priv, unused)