From patchwork Mon Mar 24 06:49:24 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: sourab.gupta@intel.com X-Patchwork-Id: 3881461 Return-Path: X-Original-To: patchwork-intel-gfx@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id A24EFBF549 for ; Mon, 24 Mar 2014 06:49:35 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D6C31201F4 for ; Mon, 24 Mar 2014 06:49:34 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 1DF5020263 for ; Mon, 24 Mar 2014 06:49:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B1B596E88F; Sun, 23 Mar 2014 23:49:33 -0700 (PDT) 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 ESMTP id 31CD36E892 for ; Sun, 23 Mar 2014 23:49:33 -0700 (PDT) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP; 23 Mar 2014 23:44:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,719,1389772800"; d="scan'208";a="498110200" Received: from sourabgu-desktop.iind.intel.com ([10.223.82.69]) by fmsmga001.fm.intel.com with ESMTP; 23 Mar 2014 23:49:30 -0700 From: sourab.gupta@intel.com To: intel-gfx@lists.freedesktop.org Date: Mon, 24 Mar 2014 12:19:24 +0530 Message-Id: <1395643764-24353-7-git-send-email-sourab.gupta@intel.com> X-Mailer: git-send-email 1.8.5.1 In-Reply-To: <1395643764-24353-1-git-send-email-sourab.gupta@intel.com> References: <1395643764-24353-1-git-send-email-sourab.gupta@intel.com> Cc: Akash Goel , Sourab Gupta Subject: [Intel-gfx] [PATCH 6/6] drm/i915/vlv: Modified Implementation of WaDisableL3Bank2xClockGate X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.15 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=-4.7 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 From: Akash Goel For VLV, disabling L3 clock gating- MMIO 940c[25] = 1 Signed-off-by: Akash Goel Signed-off-by: Sourab Gupta --- drivers/gpu/drm/i915/intel_pm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 6c04b79..fbfdca7 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5096,8 +5096,11 @@ static void valleyview_init_clock_gating(struct drm_device *dev) I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE); - /* WaDisableL3Bank2xClockGate:vlv */ - I915_WRITE(GEN7_UCGCTL4, GEN7_L3BANK2X_CLOCK_GATE_DISABLE); + /* WaDisableL3Bank2xClockGate:vlv + * Disabling L3 clock gating- MMIO 940c[25] = 1 + * Set bit 25, to disable L3_BANK_2x_CLK_GATING */ + I915_WRITE(GEN7_UCGCTL4, + I915_READ(GEN7_UCGCTL4) | GEN7_L3BANK2X_CLOCK_GATE_DISABLE); I915_WRITE(MI_ARB_VLV, MI_ARB_DISPLAY_TRICKLE_FEED_DISABLE);