From: Chris Ball <cjb@laptop.org>
To: Kumar Gala <galak@kernel.crashing.org>
Cc: Huang Changming-R66093 <R66093@freescale.com>,
"linuxppc-dev@lists.ozlabs.org list"
<linuxppc-dev@lists.ozlabs.org>,
linux-mmc@vger.kernel.org,
Anton Vorontsov <cbouatmailru@gmail.com>
Subject: Re: [PATCH 2/3] powerpc/esdhc: add property to disable the CMD23
Date: Tue, 11 Sep 2012 16:59:07 -0400 [thread overview]
Message-ID: <87liggwa1w.fsf@octavius.laptop.org> (raw)
In-Reply-To: <FC22FA36-B2CF-49C2-A0B1-8A0EA614B9CB@kernel.crashing.org> (Kumar Gala's message of "Tue, 11 Sep 2012 15:26:32 -0500")
Hi,
On Tue, Sep 11 2012, Kumar Gala wrote:
> thanks for the info. Do you know what's required on controller side
> to handle cards that support CMD23?
>
> I'm trying to figure out if older controller's on FSL SoCs are missing
> some feature to allow CMD23 to work (vs Auto-CMD23).
It seems plausible that it's just not implemented on these controllers.
It's a little strange, since the command's been specified for so long
and we haven't seen any other controllers with problems. The patch
would be correct if this is true.
- Chris.
--
Chris Ball <cjb@laptop.org> <http://printf.net/>
One Laptop Per Child
next prev parent reply other threads:[~2012-09-11 20:59 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-11 7:12 [PATCH 1/3] powerpc/esdhc: disable CMD23 for some Freescale SoCs Chang-Ming.Huang
2012-09-11 7:12 ` [PATCH 2/3] powerpc/esdhc: add property to disable the CMD23 Chang-Ming.Huang
2012-09-11 7:12 ` [PATCH 3/3] MMC/esdhc: introduce the 'sdhci,no-cmd23' Chang-Ming.Huang
2012-09-11 7:55 ` Anton Vorontsov
2012-09-11 7:54 ` [PATCH 2/3] powerpc/esdhc: add property to disable the CMD23 Anton Vorontsov
2012-09-11 8:04 ` Anton Vorontsov
2012-09-11 9:36 ` Huang Changming-R66093
2012-09-11 12:43 ` Kumar Gala
2012-09-11 12:49 ` Kumar Gala
2012-09-11 14:44 ` Chris Ball
2012-09-11 20:26 ` Kumar Gala
2012-09-11 20:59 ` Chris Ball [this message]
2012-09-12 6:18 ` Huang Changming-R66093
2012-09-12 12:13 ` Kumar Gala
2012-09-13 2:02 ` Huang Changming-R66093
2012-09-13 12:47 ` Kumar Gala
2012-09-14 2:02 ` Huang Changming-R66093
2012-09-14 12:40 ` Kumar Gala
2012-09-17 12:36 ` Chris Ball
2012-09-17 13:12 ` Kumar Gala
2012-09-17 13:45 ` Chris Ball
2012-09-18 1:09 ` Huang Changming-R66093
2012-09-18 5:00 ` Kumar Gala
2012-09-18 5:07 ` Chris Ball
2012-09-11 18:28 ` Scott Wood
2012-09-12 3:19 ` Huang Changming-R66093
2012-09-12 3:38 ` Anton Vorontsov
2012-09-13 7:57 ` Huang Changming-R66093
2012-09-11 7:57 ` [PATCH 1/3] powerpc/esdhc: disable CMD23 for some Freescale SoCs Anton Vorontsov
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