From mboxrd@z Thu Jan  1 00:00:00 1970
From: Deepak S <deepak.s@linux.intel.com>
Subject: Re: [PATCH 5/7] drm/i915: Agressive downclocking on
	Baytrail
Date: Wed, 18 Mar 2015 13:42:58 +0530
Message-ID: <5509338A.9060309@linux.intel.com>
References: <1425654391-2126-1-git-send-email-chris@chris-wilson.co.uk>
 <1425654391-2126-5-git-send-email-chris@chris-wilson.co.uk>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga03.intel.com (mga03.intel.com [134.134.136.65])
 by gabe.freedesktop.org (Postfix) with ESMTP id EFB4E72095
 for <intel-gfx@lists.freedesktop.org>; Wed, 18 Mar 2015 01:17:21 -0700 (PDT)
In-Reply-To: <1425654391-2126-5-git-send-email-chris@chris-wilson.co.uk>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: Chris Wilson <chris@chris-wilson.co.uk>, intel-gfx@lists.freedesktop.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Rodrigo Vivi <rodrigo.vivi@intel.com>
List-Id: intel-gfx@lists.freedesktop.org
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