From mboxrd@z Thu Jan  1 00:00:00 1970
From: Boris Brezillon <boris.brezillon@bootlin.com>
Subject: Re: backlight - chicken and egg challenge
Date: Mon, 10 Sep 2018 09:27:24 +0200
Message-ID: <20180910092724.4caa91de@bbrezillon>
References: <20180908201755.GA15354@ravnborg.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
Received: from mail.bootlin.com (mail.bootlin.com [62.4.15.54])
 by gabe.freedesktop.org (Postfix) with ESMTP id E73B56E22C
 for <dri-devel@lists.freedesktop.org>; Mon, 10 Sep 2018 07:27:37 +0000 (UTC)
In-Reply-To: <20180908201755.GA15354@ravnborg.org>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: dri-devel@lists.freedesktop.org
List-Id: dri-devel@lists.freedesktop.org
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