From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wolfram Sang <wsa@the-dreams.de>
Subject: Re: [PATCH 0/2] Use demuxer for i2c1 and i2c5
Date: Mon, 22 Jan 2018 12:40:26 +0100
Message-ID: <20180122114026.uqozk4cbhfrjwqmd@katana>
References: <1516620563-7965-1-git-send-email-biju.das@bp.renesas.com>
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To: Biju Das <biju.das@bp.renesas.com>
Cc: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Simon Horman <horms@verge.net.au>, Magnus Damm <magnus.damm@gmail.com>, Chris Paterson <chris.paterson2@renesas.com>, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org
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On Mon, Jan 22, 2018 at 11:29:21AM +0000, Biju Das wrote:
> We have observed that on iWave RZ/G1E boards, randomly HDMI slave device
> is holding data line after a soft reboot.
>=20
> We applied demuxer patch for i2c1 and using an oscilloscope verified that
> i2c recovery works on the failure condition.

Do you really need the demuxer for that?

I posted and just merged bus recovery to the i2c-rcar driver. Did you
test that? In theory, this should be enough.


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