linux-kernel - Re: [PATCH] mmc/sdio: don't allow interface to runtime-suspend until probe is finished.

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Message-ID: <CAK=Wgbb9nnC8e8aLS3XwLfHi8N2bXFSMYeviAOE9LOeocAPckQ@mail.gmail.com>
Date:	Mon, 19 Dec 2011 11:12:47 +0200
From:	Ohad Ben-Cohen <ohad@...ery.com>
To:	Bing Zhao <bzhao@...vell.com>
Cc:	NeilBrown <neilb@...e.de>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Daniel Drake <dsd@...top.org>,
	Joe Woodward <jw@...rafix.co.uk>, Chris Ball <cjb@...top.org>
Subject: Re: [PATCH] mmc/sdio: don't allow interface to runtime-suspend until
 probe is finished.

Hello Bing,

On Thu, Dec 15, 2011 at 9:35 AM, Bing Zhao <bzhao@...vell.com> wrote:
>> I wonder why the sdio reset command isn't helpful for you - it did
>> seem to resolve some issues for Daniel. Maybe you have two different
>> hardware revisions of the 8686 which behave differently in this
>> respect ?
>
> CMD52 Card Reset (writing bit3=1 to CCCR 0x06) may not reset the SD8686 properly for some systems. The reliable way to reset SD8686 is via RESETn toggling.

Thanks a lot for confirming this.

Ohad.
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