From: "Richard Purdie" <rpurdie@rpsys.net>
To: "Ian Molton" <spyro@f2s.com>, "Russell King" <rmk+lkml@arm.linux.org.uk>
Cc: "Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: MMC Driver RFC
Date: Wed, 12 Jan 2005 23:58:31 -0000 [thread overview]
Message-ID: <032a01c4f902$e1b8ec20$0f01a8c0@max> (raw)
In-Reply-To: 41E5B177.4060307@f2s.com
Ian Molton:
>> That depends whether the hardware already provides 0.5s of debounce
>> already. Some people do, some people don't. This is why it needs to
>> be left to the implementation and not a core issue.
>
> Agreed. IIRC my toshiba PDAs *dont* provide a delay. OTOH they also
> provide *two* ways of detecting card presence...
I hadn't realised some devices had hardware debounce and now agree its not a
core problem.
> ISTR seeing a SD card doc at some point
The one I'm aware of is
http://www.sdcard.org/sdio/Simplified%20Physical%20Layer%20Specification.PDF
.
> Well I *know* I never saw the specs from the SD forum. I hacve never
> reverse engineered a SDHC core driver either (I have reverse engineered a
> chip driver but it contained no SD *protocol* information.
>
> as such my code should be 100% safe to commit to the kernel.
Having read things and talked to people (both before and since my posts on
LKML), that is my conclusion as well.
> PS. Richard - I am here - hope you receive this!
I did. Have my mails to you been getting through?
Richard
next prev parent reply other threads:[~2005-01-13 0:03 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-12 21:10 MMC Driver RFC Richard Purdie
2005-01-12 21:43 ` Russell King
2005-01-12 22:07 ` Richard Purdie
2005-01-12 22:17 ` Russell King
2005-01-12 23:23 ` Ian Molton
2005-01-12 23:58 ` Richard Purdie [this message]
2005-01-14 11:37 ` Pierre Ossman
2005-01-14 14:55 ` Ian Molton
2005-01-16 12:22 ` Pierre Ossman
2005-01-16 13:19 ` Ian Molton
2005-01-16 19:43 ` Pierre Ossman
2005-01-16 23:17 ` Richard Purdie
2005-01-16 22:33 ` Alan Cox
2005-01-17 6:07 ` Pierre Ossman
2005-01-17 9:53 ` Richard Purdie
2005-01-17 11:59 ` Pierre Ossman
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