From: Robert Jarzmik <robert.jarzmik@free.fr>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] drivers/mci: fix read/write stalling
Date: Tue, 28 Feb 2012 13:34:24 +0100 [thread overview]
Message-ID: <877gz7xhkf.fsf@free.fr> (raw)
In-Reply-To: <20120228083622.GM3852@pengutronix.de> (Sascha Hauer's message of "Tue, 28 Feb 2012 09:36:22 +0100")
Sascha Hauer <s.hauer@pengutronix.de> writes:
> On Mon, Feb 27, 2012 at 11:45:28PM +0100, Robert Jarzmik wrote:
> Do we have to send CMD12 even when a single block transfer failed?
Yes, we should.
For instance, the PXA host can stall even on a single block read. The spec
states that only a "Operation Complete" or "CMD12" brings back the card to
"tran" state. If a CRC error occurs in the middle of the read, the card has the
right to stay in "data" state.
--
Robert
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next prev parent reply other threads:[~2012-02-28 12:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-27 22:45 Robert Jarzmik
2012-02-28 8:36 ` Sascha Hauer
2012-02-28 12:34 ` Robert Jarzmik [this message]
2012-02-29 7:39 ` Sascha Hauer
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