linux-kernel - Re: [PATCH] mmc: MMC 4.4 DDR support

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Message-ID: <20100930223011.GB29047@void.printf.net>
Date:	Thu, 30 Sep 2010 23:30:11 +0100
From:	Chris Ball <cjb@...top.org>
To:	Adrian Hunter <adrian.hunter@...ia.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Matt Fleming <matt@...sole-pimps.org>,
	Linus Walleij <linus.ml.walleij@...il.com>,
	"linux-mmc@...r.kernel.org" <linux-mmc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"STEricsson_nomadik_linux@...t.st.com" 
	<STEricsson_nomadik_linux@...t.st.com>,
	Hanumath Prasad <hanumath.prasad@...ricsson.com>,
	Kyungmin Park <kmpark@...radead.org>
Subject: Re: [PATCH] mmc: MMC 4.4 DDR support

Hi,

On Tue, Aug 24, 2010 at 01:30:45PM +0300, Adrian Hunter wrote:
> From: Adrian Hunter <adrian.hunter@...ia.com>
> Date: Tue, 24 Aug 2010 13:20:26 +0300
> Subject: [PATCH] mmc: Fix Dual Data Rate (DDR) support
>
> The DDR support patch needs the following fixes:
>
> - The block driver does not need to know about DDR, any more
> than it needs to know about bus width.
> - Not only the card must be switched to DDR mode.  The host
> controller must also be configured, which is done through
> the 'set_ios()' function.
> - Do not set the DDR mode state until after the switch command
> is successful.
> - Setting block length is not supported in DDR mode.  Make that
> a core function and change the other place it is used (mmc_test)
> also.
>
> Signed-off-by: Adrian Hunter <adrian.hunter@...ia.com>

Applied to mmc-next, thanks very much Adrian.

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