lkml.org 
[lkml]   [2007]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 4/4] sdio: disable CD resistor
On Tue, 07 Aug 2007 15:46:36 +0100
David Vrabel <david.vrabel@csr.com> wrote:

>
> Is there an example driver for a host that uses pin 1/DAT3 sensing for
> card detection? I'm curious about how removal detections work.
>

Both wbsd and sdhci have experienced hardware with this. In sdhci this
is hidden completely in hardware, but wbsd has to do some funky logic
to handle the problem.

> App Note on card detection goes into the use of this resistor in more
> detail but I don't believe this document is publicly available :(.
>

SD is a wonderful world. :/

--
-- Pierre Ossman

Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2007-08-07 17:11    [W:0.042 / U:0.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site