From: Pierre Ossman <drzeus-list@drzeus.cx>
To: Pierre Ossman <drzeus-list@drzeus.cx>,
Anderson Lizardo <anderson.lizardo@gmail.com>,
Anderson Briglia <anderson.briglia@indt.org.br>,
Anderson Lizardo <anderson.lizardo@indt.org.br>,
linux-omap-open-source@linux.omap.com,
linux-kernel@vger.kernel.org,
Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Tony Lindgren <tony@atomide.com>,
David Brownell <david-b@pacbell.net>
Subject: Re: [patch 0/5] Add MMC password protection (lock/unlock) support
Date: Thu, 15 Dec 2005 17:01:30 +0100 [thread overview]
Message-ID: <43A1935A.4020902@drzeus.cx> (raw)
In-Reply-To: <20051215134436.GB6211@flint.arm.linux.org.uk>
Russell King wrote:
> Reading through the specs I have here, block sizes seem to be all over
> the place. The MMC card specs seem to imply that any block size can
> be set, from 0 bytes to 2^32-1 bytes.
>
> The PXA MMC interface specification allows the block size to be anything
> from 1 to 1023 bytes, excluding CRC. It is unclear whether a value of 0
> means 1024.
>
> The MMCI specification allows the block size to be specified as a power
> of two, from 1 to 2048 bytes, excluding CRC.
>
> Pierre - can you comment on wbsd's capabilities please?
>
>
wbsd can do 1 to 4087 (it wants CRC bytes in the size so it goes to 4095
including those). Which means I probably set incorrect sg limits... I
guess I should fix that.
sdhci, which I'm currently developing, can do up to 0x7FFF. The register
is 16-bits, but the upper bit never sticks so I assume it cannot be used.
Rgds
Pierre
next prev parent reply other threads:[~2005-12-15 16:01 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20051213213208.303580000@localhost.localdomain>
2005-12-13 22:03 ` [patch 0/5] Add MMC password protection (lock/unlock) support David Brownell
2005-12-14 22:48 ` Anderson Lizardo
2005-12-27 18:48 ` Carlos Aguiar
2005-12-13 22:27 ` Anderson Briglia
2005-12-14 7:07 ` Pierre Ossman
2005-12-14 23:51 ` Anderson Lizardo
2005-12-15 6:49 ` Pierre Ossman
2005-12-15 9:12 ` Russell King
2005-12-15 9:27 ` Pierre Ossman
2005-12-15 10:06 ` Russell King
2005-12-15 13:44 ` Russell King
2005-12-15 16:01 ` Pierre Ossman [this message]
2005-12-29 19:06 ` Anderson Lizardo
2005-12-29 20:09 ` Russell King
2005-12-29 21:23 ` Anderson Lizardo
2005-12-29 21:37 ` Russell King
2005-12-29 19:17 ` Anderson Lizardo
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