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RE: smp8634 add memory at dram1

To: <linux-mips@linux-mips.org>
Subject: RE: smp8634 add memory at dram1
From: "Gustafsson Marcus-MGU001" <marcus.gustafsson@motorola.com>
Date: Thu, 15 Nov 2007 10:49:23 -0000
In-reply-to: <473B1DD0.2090903@avtrex.com>
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Thread-index: Acgm2QB4xn+6fb3YRXGJOOt6dN86XAAm96dA
Thread-topic: smp8634 add memory at dram1
 
David Daney wrote
> I think your understanding of the 8634 is at least close to correct.
> 
> It may be possible (but I have not tried it yet) to use the 
> remapping registers to move dram1 into the first 512MB of the 
> memory space.  If it is possible, you would then have to 
> modify the gbus access functions accordingly.  Also the 8634 
> media drivers would probably have to be changed as well.  I 
> am not sure about the microcode for the media DSPs, but if it 
> is dependent on the mapping of the DRAM, then you would 
> probably have to get the vendor's help.
> 
> Let me know if you are successful.
AFAIK the memory bandwith available is not enough for supporting video
decoding and Linux usage at the same dram controller.

/Marcus Gustafsson

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