From: Pierre Ossman <drzeus-list@drzeus.cx>
To: David Vrabel <david.vrabel@csr.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [patch 4/4] sdio: disable CD resistor
Date: Tue, 7 Aug 2007 15:43:42 +0200 [thread overview]
Message-ID: <20070807154342.47f63cfe@poseidon.drzeus.cx> (raw)
In-Reply-To: <46B86BDF.8050700@csr.com>
On Tue, 07 Aug 2007 13:55:59 +0100
David Vrabel <david.vrabel@csr.com> wrote:
> sdio: disable CD resistor
>
> Disable the card detect resistor to ensure all data lines are equally
> loaded. Not doing this can have a negative impact on buses with
> marginal signal quality.
>
> Signed-off-by: David Vrabel <david.vrabel@csr.com>
I'm not sure about this. I've seen several hosts which lack a
mechanical detect switch.
--
-- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
next prev parent reply other threads:[~2007-08-07 13:43 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-31 15:36 sdio: enhance IO_RW_EXTENDED support David Vrabel
2007-07-31 15:36 ` sdio: parameterize SDIO FBR register defines David Vrabel
2007-08-04 13:26 ` Pierre Ossman
2007-08-06 10:14 ` David Vrabel
2007-08-06 14:58 ` Pierre Ossman
2007-07-31 15:36 ` sdio: set the functions' block size David Vrabel
2007-08-04 13:30 ` Pierre Ossman
2007-08-06 10:04 ` David Vrabel
2007-07-31 15:36 ` sdio: extend sdio_readsb() and friends to handle any length of buffer David Vrabel
2007-08-04 13:35 ` Pierre Ossman
2007-08-04 13:23 ` sdio: enhance IO_RW_EXTENDED support Pierre Ossman
2007-08-06 10:31 ` David Vrabel
2007-08-06 15:12 ` Pierre Ossman
2007-08-06 15:32 ` David Vrabel
2007-08-06 18:06 ` Pierre Ossman
2007-08-06 20:01 ` Pierre Ossman
2007-08-07 12:51 ` David Vrabel
2007-08-07 12:53 ` [patch 1/4] sdio: parameterize SDIO FBR register defines David Vrabel
2007-08-07 12:54 ` [patch 2/4] sdio: set the functions' block size David Vrabel
2007-08-07 13:38 ` Pierre Ossman
2007-08-07 17:20 ` David Vrabel
2007-08-07 17:54 ` Pierre Ossman
2007-08-08 9:46 ` David Vrabel
2007-08-08 10:06 ` Pierre Ossman
2007-08-08 10:19 ` David Vrabel
2007-08-07 12:55 ` [patch 3/4] sdio: extend sdio_readsb() and friends to handle any length of buffer David Vrabel
2007-08-07 13:42 ` Pierre Ossman
2007-08-07 20:17 ` Pierre Ossman
2007-08-08 10:19 ` David Vrabel
2007-08-08 10:37 ` Pierre Ossman
2007-08-08 13:22 ` David Vrabel
2007-08-08 13:23 ` [patch 1/3] sdio: add SDIO_FBR_BASE(f) macro David Vrabel
2007-08-08 13:23 ` [patch 2/3] sdio: set the functions' block size David Vrabel
2007-08-08 13:24 ` [patch 3/3] sdio: extend sdio_readsb() and friends to handle any length of buffer David Vrabel
2007-08-08 16:55 ` [patch 3/4] " Pierre Ossman
2007-08-07 12:55 ` [patch 4/4] sdio: disable CD resistor David Vrabel
2007-08-07 13:43 ` Pierre Ossman [this message]
2007-08-07 14:46 ` David Vrabel
2007-08-07 15:08 ` Pierre Ossman
2007-08-07 13:33 ` sdio: enhance IO_RW_EXTENDED support Pierre Ossman
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