From mboxrd@z Thu Jan  1 00:00:00 1970
From: Boris Brezillon <boris.brezillon@free-electrons.com>
Subject: Re: [PATCH 1/7] drm/bridge: Support hotplugging panel-bridge.
Date: Thu, 22 Jun 2017 11:23:32 +0200
Message-ID: <20170622112332.7ec7b65c@bbrezillon>
References: <20170615204130.19255-1-eric@anholt.net>
 <20170615204130.19255-2-eric@anholt.net>
 <777ee1b1-e5ce-ea29-8a48-f792354a22d1@codeaurora.org>
 <871sqkouvr.fsf@eliezer.anholt.net>
 <8e148170-b626-b426-3c94-b93d2746f4ce@codeaurora.org>
 <871sqe7ei0.fsf@eliezer.anholt.net>
 <CA+M3ks6T5aXjVuiYirw+j0UMt-x6tPjoeBXfOTAH8DXQNW-5sA@mail.gmail.com>
 <dd33044e-46d6-6f33-1011-b0bc343ddc96@codeaurora.org>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
In-Reply-To: <dd33044e-46d6-6f33-1011-b0bc343ddc96@codeaurora.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: Archit Taneja <architt@codeaurora.org>, Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Mark Rutland <mark.rutland@arm.com>, devicetree@vger.kernel.org, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>, Philippe Cornu <philippe.cornu@st.com>, Rob Herring <robh+dt@kernel.org>, Thierry Reding <thierry.reding@gmail.com>
List-Id: devicetree@vger.kernel.org
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