From: Kelsey Dawes <kelsey@codemonkey.net>
To: Charles Krinke <ckrinke@istor.com>
Cc: Randy Brown <rbrown@istor.com>,
Vahid Fereydounkolahi <vahidf@istor.com>,
Chris Carlson <ccarlson@istor.com>,
linuxppc-embedded@ozlabs.org
Subject: Re: DMA Puzzle
Date: Mon, 16 Apr 2007 13:35:29 -0600 [thread overview]
Message-ID: <20070416193529.GE31265@nimrod.unx.ca> (raw)
In-Reply-To: <9F3F0A752CAEBE4FA7E906CC2FBFF57C06A1D2@MERCURY.inside.istor.com>
On Thu, Apr 12, 2007 at 04:23:00PM -0700, Charles Krinke wrote:
> My apologies for the complexity of this e-mail but DMA seems to be a
> complex subject. Thanks to Ed.S a while back, I have DMA working fine
> from U-Boot, but I am having a problem in Linux with the 8541 processor
> using the 2.6.17.11 kernel. I need to DMA through an outbound address
> translation window setup at 0x8800_0000 and the chip I am DMA'ing to is
> responding to 64bit DAC (Dual Address Cycles) and its memory is setup
<SNIP>
Hi Charles - have you checked the device errata for 8541? I do not have the details in front of me, but do recall several items specific to DMA signal to complete DMA transaction.
Worth a look anyway -
Kelsey
next prev parent reply other threads:[~2007-04-16 20:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-11 20:47 Still trying to get a stable 2.6.20.4 running on 8349ITX eval board Bruce_Leonard
2007-04-11 20:59 ` Benedict, Michael
2007-04-11 22:56 ` Bruce_Leonard
2007-04-12 0:35 ` Ed Swierk
2007-04-12 15:36 ` Vitaly Bordug
2007-04-12 16:06 ` Still trying to get a stable 2.6.20.4 running on 8349ITX evalboard Benedict, Michael
2007-04-12 17:43 ` Still trying to get a stable 2.6.20.4 running on 8349ITX eval board Bruce_Leonard
2007-04-12 19:27 ` Still trying to get a stable 2.6.20.4 running on 8349ITX evalboard Benedict, Michael
2007-04-12 21:58 ` Bruce_Leonard
2007-04-12 23:23 ` DMA Puzzle Charles Krinke
2007-04-16 19:35 ` Kelsey Dawes [this message]
2007-04-13 2:39 ` Anyone using the MPC8313E-RDB? David Hawkins
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