From: Wolfram Sang <w.sang@pengutronix.de>
To: "Albrecht Dreß" <albrecht.dress@arcor.de>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: Weird 5200/mtd-ram problem
Date: Mon, 25 May 2009 23:47:18 +0200 [thread overview]
Message-ID: <20090525214718.GA8152@pengutronix.de> (raw)
In-Reply-To: <1243273283.3328.0@antares>
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> A word or long copy of 0x0055aaff with U-Boot works fine, but a byte
> copy filled the whole ram with 0x0000aaaa. The reason is apparently
> that the chip is attached to the local bus in 16-bit mode, which is
> incompatible with byte accesses. However, the Local Bus doesn't provide
> "low byte" or "high byte" indicators in non-muxed mode. How is this
> supposed to work then?
Hmm, as I feared... we were bitten by this, too:
http://thread.gmane.org/gmane.linux.drivers.mtd/21521
There is no generic solution yet :(
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2009-05-25 21:47 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-20 14:13 Weird 5200/mtd-ram problem Albrecht Dreß
2009-05-20 14:23 ` Gary Thomas
2009-05-20 19:36 ` Albrecht Dreß
2009-05-20 19:59 ` Gary Thomas
2009-05-20 20:01 ` Wolfram Sang
2009-05-25 17:41 ` Albrecht Dreß
2009-05-25 18:11 ` Wolfgang Denk
2009-05-25 21:47 ` Wolfram Sang [this message]
2009-05-27 19:54 ` [Solved/Patch Question] " Albrecht Dreß
2009-05-28 3:10 ` Jon Smirl
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