From: Alex Dubov <oakad@yahoo.com>
To: "Jörn" Engel <joern@logfs.org>
Cc: linux-mtd@lists.infradead.org
Subject: Re: Support of removable MTD devices and other advanced features (follow-up from lkml)
Date: Sun, 25 May 2008 19:12:41 -0700 (PDT) [thread overview]
Message-ID: <636290.99305.qm@web36707.mail.mud.yahoo.com> (raw)
In-Reply-To: <20080525072501.GA13140@logfs.org>
--- Jörn Engel <joern@logfs.org> wrote:
> On Sat, 24 May 2008 20:41:17 -0700, Alex Dubov wrote:
> > --- Jörn Engel <joern@logfs.org> wrote:
> >
> > > Writes happen in multiples of mtd->writesize. Which for NAND is
> > > pagesize. There are also special cases with subpage writes. AFAIK only
> > > UBI exploits that feature.
> >
> > Most xd cards can only be written a whole PEB in a time (can be handled
> with
> > appropriate writesize, I suppose).
>
> Up to 256M writing pages at a time worked for me. 1G didn't work
> anymore. Whether this was due to your requirement above or something
> else I didn't work out.
>
"Smartmedia" spec kind of allows (but recommends against) single page
programming. "xD card" spec prohibits it outright starting from version 1.0.
And in fact I had some really nasty problems recently with two olympus cards
when not writing full blocks.
next prev parent reply other threads:[~2008-05-26 2:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-20 13:59 Support of removable MTD devices and other advanced features (follow-up from lkml) Alex Dubov
2008-05-21 6:47 ` Artem Bityutskiy
2008-05-21 8:41 ` Jörn Engel
2008-05-22 1:30 ` Alex Dubov
2008-05-22 15:10 ` Jörn Engel
2008-05-23 2:47 ` Alex Dubov
2008-05-23 5:50 ` Jörn Engel
2008-05-23 9:33 ` Alex Dubov
2008-05-23 9:59 ` Jörn Engel
2008-05-23 12:49 ` Alex Dubov
2008-05-23 13:28 ` Jörn Engel
2008-05-24 13:12 ` Alex Dubov
2008-05-24 17:56 ` Jörn Engel
2008-05-25 3:41 ` Alex Dubov
2008-05-25 7:25 ` Jörn Engel
2008-05-25 13:30 ` Jamie Lokier
2008-05-25 16:24 ` Jörn Engel
2008-05-25 16:35 ` Jamie Lokier
2008-05-25 16:55 ` Jörn Engel
2008-05-26 2:12 ` Alex Dubov [this message]
2008-05-21 9:06 ` David Woodhouse
2008-05-21 9:29 ` Jörn Engel
2008-05-21 15:20 ` Alex Dubov
2008-05-21 15:22 ` David Woodhouse
2008-05-21 15:41 ` Alex Dubov
2008-05-21 20:45 ` Jörn Engel
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