From: David Haworth <dave@fen-net.de>
To: amit mahadik <amitmaddy@gmail.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>, linux-mmc@vger.kernel.org
Subject: Re: How to print CMD18 read data
Date: Wed, 1 Feb 2017 19:00:21 +0100 [thread overview]
Message-ID: <20170201180021.GA3189@fen-net.de> (raw)
In-Reply-To: <CAMGZvfLeERvi5eavPc4gcoJr2dOpAe7XSe+zs9K9yOKv=eOoow@mail.gmail.com>
Hi Amit,
I'm trying to access an SD card/reader using SPI on a
Raspberry Pi. I've had a little success - some of my cards
work, some don't. I get errors from time to time, but they
appear harmless. I seem to have cured a spurious timeout
problem.
I'm using pr_info() to dump debug messages into /var/log/syslog.
Maybe we can compare notes and come up with a solution.
Contact me off-list of you prefer.
Cheers,
Dave
On Wed, Feb 01, 2017 at 05:46:34PM +0530, amit mahadik wrote:
> Hi Jaehoon,
> I tried the use_spi_crc=0 option too. However,
> if the data read is incorrect the block layer has no way of knowing
> the contents of partition table. That is the reason it fails to detect
> partitions of the connected SDMMC card.
>
> Regards,
> Amit.
--
David Haworth
Baiersdorf, Germany
dave@fen-net.de PGP key at https://keyserver.pgp.com/
http://thelancashireman.org
prev parent reply other threads:[~2017-02-01 18:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170201072351epcas2p4b40fc91e204153ce57d510622ab021cc@epcas2p4.samsung.com>
2017-02-01 7:23 ` How to print CMD18 read data amit mahadik
2017-02-01 8:08 ` Jaehoon Chung
2017-02-01 8:48 ` amit mahadik
2017-02-01 11:43 ` Jaehoon Chung
2017-02-01 12:16 ` amit mahadik
2017-02-01 18:00 ` David Haworth [this message]
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