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: [v3] drm/i915/skl: If needed sanitize bios
 programmed cdclk
Date: Tue, 20 Oct 2015 14:19:22 +0300
Message-ID: <20151020111922.GG26517@intel.com>
References: <1444278535-16483-1-git-send-email-shobhit.kumar@intel.com>
 <1445001533-28070-1-git-send-email-shobhit.kumar@intel.com>
 <20151019134805.GA26517@intel.com>
 <56261004.4010304@linux.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 mga09.intel.com (mga09.intel.com [134.134.136.24])
 by gabe.freedesktop.org (Postfix) with ESMTP id BD24B6EBC1
 for <intel-gfx@lists.freedesktop.org>; Tue, 20 Oct 2015 04:19:43 -0700 (PDT)
Content-Disposition: inline
In-Reply-To: <56261004.4010304@linux.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: "Kumar, Shobhit" <shobhit.kumar@linux.intel.com>
Cc: Shobhit Kumar <shobhit.kumar@intel.com>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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