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From: Jaehoon Chung <jh80.chung@samsung.com>
To: Wolfram Sang <w.sang@pengutronix.de>
Cc: Jaehoon Chung <jh80.chung@samsung.com>,
	linux-mmc@vger.kernel.org, Chris Ball <cjb@laptop.org>,
	kyungmin Park <kyungmin.park@samsung.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	matt@console-pimps.org
Subject: Re: [RFC Patch] SDHCI: add quirk for data timeout value when card busy.
Date: Tue, 30 Nov 2010 19:13:28 +0900	[thread overview]
Message-ID: <4CF4CE48.7040102@samsung.com> (raw)
In-Reply-To: <20101130095618.GA6408@pengutronix.de>

Hi Wolfram.

Maybe, happen for all sdhci-controllers...

Card is configurable with eMMC spec..But sdhci-controller didn't support that card.
So SDHCI controller need to use quriks..

Thanks,
Jaehoon Chung

Wolfram Sang wrote:
> Hi,
> 
> On Tue, Nov 30, 2010 at 03:13:48PM +0900, Jaehoon Chung wrote:
>> This patch is added quirks for data timeout value.
>>
>> Some card have problem when suspend/resume.
>> CMD6(switch command) to switch the bus to high speed mode 
>> and to set the bus width.
>>
>> After resuming, the card was initialized...in that time, some
>> card need set a correct timeout value.
>> so we add SDHCI_QUIRK_SET_DATA_TIMEOUT_VAL.
> 
> If this is a flaw of the _card_, why do we need a controller quirk here?
> Shouldn't this happen for all sdhci-controllers?
> 
> Kind regards,
> 
>    Wolfram
> 


  reply	other threads:[~2010-11-30 10:13 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-11-30  6:13 [RFC Patch] SDHCI: add quirk for data timeout value when card busy Jaehoon Chung
2010-11-30  6:42 ` Philip Rakity
2010-11-30  7:15   ` Jaehoon Chung
2010-11-30  9:56 ` Wolfram Sang
2010-11-30 10:13   ` Jaehoon Chung [this message]
2010-11-30 10:54     ` Wolfram Sang
2010-11-30 11:37       ` Jaehoon Chung
2010-11-30 15:56         ` Philip Rakity
2010-12-01  5:44           ` Jaehoon Chung
2010-12-01  5:51             ` Philip Rakity
2010-12-01 12:29               ` Jaehoon Chung
2010-12-01 16:21                 ` Philip Rakity
2010-12-02  7:40                   ` Jaehoon Chung
2010-12-02  9:09                     ` Wolfram Sang
2010-12-02 16:00                     ` Philip Rakity

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