Messages in this thread | | | Date | Tue, 7 Aug 2007 17:08:26 +0200 | From | Pierre Ossman <> | Subject | Re: [patch 4/4] sdio: disable CD resistor |
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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/
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