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From: Chris Ball <cjb@laptop.org>
To: Girish K S <girish.shivananjappa@linaro.org>
Cc: linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	ben-linux@fluff.org, kgene.kim@samsung.com, patches@linaro.org,
	linux-samsung-soc@vger.kernel.org
Subject: Re: [PATCH] mmc: sdhci-s3c: Fix mmc card I/O problem
Date: Sun, 28 Aug 2011 14:11:19 -0400	[thread overview]
Message-ID: <m2obz9xv7c.fsf@bob.laptop.org> (raw)
In-Reply-To: <1314350898-26372-1-git-send-email-girish.shivananjappa@linaro.org> (Girish K. S.'s message of "Fri, 26 Aug 2011 14:58:18 +0530")

Hi,

On Fri, Aug 26 2011, Girish K S wrote:
> This patch fixes the problem in sdhci-s3c host driver for
> Samsung Soc's. During the card identification stage the
> mmc core driver enumerates for the best bus width in combination
> with the highest available data rate. It starts enumerating from
> the highest bus width (8) to lowest bus width (1).
>
> In case of few MMC cards the 4-bit bus enumeration fails and tries
> the 1-bit bus enumeration. When switched to 1-bit bus mode the host driver
> has to clear the previous bus width setting and apply the new setting.
>
> The current patch will clear the previous bus mode and apply the new
> mode setting.
>
> Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>

Thanks, pushed to mmc-next for 3.1 with a stable@ tag.

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child

WARNING: multiple messages have this Message-ID (diff)
From: cjb@laptop.org (Chris Ball)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mmc: sdhci-s3c: Fix mmc card I/O problem
Date: Sun, 28 Aug 2011 14:11:19 -0400	[thread overview]
Message-ID: <m2obz9xv7c.fsf@bob.laptop.org> (raw)
In-Reply-To: <1314350898-26372-1-git-send-email-girish.shivananjappa@linaro.org> (Girish K. S.'s message of "Fri, 26 Aug 2011 14:58:18 +0530")

Hi,

On Fri, Aug 26 2011, Girish K S wrote:
> This patch fixes the problem in sdhci-s3c host driver for
> Samsung Soc's. During the card identification stage the
> mmc core driver enumerates for the best bus width in combination
> with the highest available data rate. It starts enumerating from
> the highest bus width (8) to lowest bus width (1).
>
> In case of few MMC cards the 4-bit bus enumeration fails and tries
> the 1-bit bus enumeration. When switched to 1-bit bus mode the host driver
> has to clear the previous bus width setting and apply the new setting.
>
> The current patch will clear the previous bus mode and apply the new
> mode setting.
>
> Signed-off-by: Girish K S <girish.shivananjappa@linaro.org>

Thanks, pushed to mmc-next for 3.1 with a stable@ tag.

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child

  parent reply	other threads:[~2011-08-28 18:11 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-26  9:28 [PATCH] mmc: sdhci-s3c: Fix mmc card I/O problem Girish K S
2011-08-26  9:28 ` Girish K S
2011-08-26 10:46 ` Jaehoon Chung
2011-08-26 10:46   ` Jaehoon Chung
2011-08-28 18:11 ` Chris Ball [this message]
2011-08-28 18:11   ` Chris Ball

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