linux-kernel - Re: [PATCH] mmc: Added quirks for Ricoh 1180:e823 lower base clock frequency

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Message-ID: <alpine.DEB.2.02.1107131154000.3174@lazy>
Date:	Wed, 13 Jul 2011 11:54:40 -0500 (CDT)
From:	Manoj Iyer <manoj.iyer@...onical.com>
To:	Chris Ball <cjb@...top.org>
cc:	Arnd Bergmann <arnd@...db.de>,
	Manoj Iyer <manoj.iyer@...onical.com>,
	linux-kernel@...r.kernel.org, jbarnes@...tuousgeek.org,
	matsumur@....ricoh.co.jp, linux-pci@...r.kernel.org,
	linux-mmc@...r.kernel.org
Subject: Re: [PATCH] mmc: Added quirks for Ricoh 1180:e823 lower base clock
 frequency


> On Wed, Jul 13 2011, Arnd Bergmann wrote:
>> Not much. This card only has a 6MB/s write speed, which is well below
>> what a 50 MHz bus can do. It mgiht be different on a fast eMMC device
>> or a Sandisk Extreme Pro UHS-1 card.
>
> Okay, I see.  I think we're good for now, then -- hopefully anyone using
> a UHS card on their laptop will see the printk when wondering why their
> performance isn't great and get in touch with us, and we can investigate
> more then.
>
> I've pushed Manoj's patch to mmc-next for 3.1 now, with the printk
> changes and a stable@ tag.
>

Thanks Chris!

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

--
====================
Manoj Iyer
Ubuntu/Canonical
Hardware Enablement
====================
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