From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Subject: Re: [PATCH] drm/i915/psr: Set idle frame count based on
 sink synchronization latency
Date: Tue, 29 May 2018 14:30:51 -0700
Message-ID: <1527629451.31662.6.camel@intel.com>
References: <20180525033047.7596-1-dhinakaran.pandiyan@intel.com>
 <20180529195123.GB21995@intel.com>
Reply-To: dhinakaran.pandiyan@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 mga17.intel.com (mga17.intel.com [192.55.52.151])
 by gabe.freedesktop.org (Postfix) with ESMTPS id 456496E6DB
 for <intel-gfx@lists.freedesktop.org>; Tue, 29 May 2018 21:05:33 +0000 (UTC)
In-Reply-To: <20180529195123.GB21995@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: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>, intel-gfx@lists.freedesktop.org
List-Id: intel-gfx@lists.freedesktop.org
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=