From mboxrd@z Thu Jan  1 00:00:00 1970
From: Imre Deak <imre.deak@intel.com>
Subject: Re: [PATCH] drm/i915/tc: Implement the TC cold exit
 sequence
Date: Thu, 3 Oct 2019 17:50:48 +0300
Message-ID: <20191003145048.GF5071@ideak-desk.fi.intel.com>
References: <20191001005536.123020-1-jose.souza@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 ESMTPS id 4CE5E6EA07
 for <intel-gfx@lists.freedesktop.org>; Thu,  3 Oct 2019 14:51:57 +0000 (UTC)
Content-Disposition: inline
In-Reply-To: <20191001005536.123020-1-jose.souza@intel.com>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://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: <https://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: =?iso-8859-1?Q?Jos=E9?= Roberto de Souza <jose.souza@intel.com>
Cc: intel-gfx@lists.freedesktop.org, Lucas De Marchi <lucas.demarchi@intel.com>
List-Id: intel-gfx@lists.freedesktop.org
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