From mboxrd@z Thu Jan  1 00:00:00 1970
From: Imre Deak <imre.deak@intel.com>
Subject: Re: [PATCH] drm/i915/skl: enable PC9/10 power states
 during suspend-to-idle
Date: Thu, 19 Nov 2015 16:06:47 +0200
Message-ID: <1447942007.29536.29.camel@intel.com>
References: <1447860750-18110-1-git-send-email-imre.deak@intel.com>
 <20151118163356.GI20799@phenom.ffwll.local>
 <1447865083.14073.36.camel@intel.com>
 <20151119133448.GA4670@patrik-desktop.isw.intel.com>
Reply-To: imre.deak@intel.com
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from mga11.intel.com (mga11.intel.com [192.55.52.93])
 by gabe.freedesktop.org (Postfix) with ESMTP id 049716E948
 for <intel-gfx@lists.freedesktop.org>; Thu, 19 Nov 2015 06:06:50 -0800 (PST)
In-Reply-To: <20151119133448.GA4670@patrik-desktop.isw.intel.com>
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: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org, "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>, Nivedita Swaminathan <nivedita.swaminathan@intel.com>
List-Id: intel-gfx@lists.freedesktop.org
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