linux-kernel - Re: [PATCH v6 2/3] mmc: dw_mmc: Honor requests to set the clock to 0 (turn off clock)

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Message-ID: <CAD=FV=WrZacm7UUB3-qE=ufwkur_55m0puPNdUaGBYszPw9OdQ@mail.gmail.com>
Date:	Fri, 23 Aug 2013 13:40:52 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Jaehoon Chung <jh80.chung@...sung.com>
Cc:	Chris Ball <cjb@...top.org>, Seungwon Jeon <tgih.jun@...sung.com>,
	James Hogan <james.hogan@...tec.com>,
	Grant Grundler <grundler@...omium.org>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Abhilash Kesavan <a.kesavan@...sung.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Olof Johansson <olof@...om.net>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 2/3] mmc: dw_mmc: Honor requests to set the clock to 0
 (turn off clock)

Jaehoon,

On Fri, Aug 23, 2013 at 6:21 AM, Jaehoon Chung <jh80.chung@...sung.com> wrote:
> Hi Doug,
>
> If the clock-gating is enabled, then maybe it's continuously printed the kernel message for Bus_speed.

Can you explain?  I don't think dw_mmc has support for clock gating
right now.  ...or are there some patches that I'm not aware of?  I
could believe that if you've got some non-upstream clock gating
patches that these would need to be modified to handle it...  ...but
unless those are slated to land upstream it seems like I can't take
them into account, can I?

Thanks!

-Doug
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