From mboxrd@z Thu Jan  1 00:00:00 1970
From: CK Hu <ck.hu@mediatek.com>
Subject: Re: [PATCH v6 1/8] drm/mediatek: recalculate hdmi phy clock of
 MT2701 by querying hardware
Date: Fri, 22 Mar 2019 14:02:43 +0800
Message-ID: <1553234563.21474.6.camel@mtksdaap41>
References: <20190225020912.29120-1-wangyan.wang@mediatek.com>
 <20190225020912.29120-2-wangyan.wang@mediatek.com>
 <1551866854.1001.6.camel@mtksdaap41> <1553138590.18216.26.camel@mtksdaap41>
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 mailgw02.mediatek.com (unknown [210.61.82.184])
 by gabe.freedesktop.org (Postfix) with ESMTP id D43F76E24B
 for <dri-devel@lists.freedesktop.org>; Fri, 22 Mar 2019 06:02:55 +0000 (UTC)
In-Reply-To: <1553138590.18216.26.camel@mtksdaap41>
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: wangyan wang <wangyan.wang@mediatek.com>
Cc: Ryder Lee <ryder.lee@mediatek.com>, srv_heupstream@mediatek.com, chunhui dai <chunhui.dai@mediatek.com>, Stephen Boyd <sboyd@kernel.org>, Michael Turquette <mturquette@baylibre.com>, Sean Wang <sean.wang@mediatek.com>, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>, linux-mediatek@lists.infradead.org, Matthias Brugger <matthias.bgg@gmail.com>, Colin Ian King <colin.king@canonical.com>, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org
List-Id: dri-devel@lists.freedesktop.org
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