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Date: Tue, 27 Feb 2018 14:02:23 +0100
From: Wolfram Sang <wsa@the-dreams.de>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>,
        Simon Horman <horms+renesas@verge.net.au>,
        Magnus Damm <magnus.damm@gmail.com>,
        "linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>
Subject: Re: [PATCH v3 0/2] mmc: renesas_sdhi: add eMMC HS400 mode support
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> Perhaps someone need to explain in more detail what the HW controller
> needs to manage tuning for HS400? I don't like that we may end up
> getting it magically to work, then it's we better understand the
> details and if the current sequence provided by the mmc core can't
> fulfill the need for this case, we may instead consider adding an
> additional pre/post host ops.

Thanks. Exactly this thinking prevented me from saying "It works, let's
ship it" ;)


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