From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= <ville.syrjala@linux.intel.com>
Subject: Re: [PATCH] drm/i915/dp: Reset the link params on
 HPD/connected boot/resume
Date: Tue, 14 Feb 2017 21:08:25 +0200
Message-ID: <20170214190825.GM31595@intel.com>
References: <1486515251-23469-1-git-send-email-manasi.d.navare@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 94E8A89261
 for <intel-gfx@lists.freedesktop.org>; Tue, 14 Feb 2017 19:08:28 +0000 (UTC)
Content-Disposition: inline
In-Reply-To: <1486515251-23469-1-git-send-email-manasi.d.navare@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: Manasi Navare <manasi.d.navare@intel.com>
Cc: intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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