Re: 64MB on OMAP1510/5910?

[Ralph Walden <Ralph.Walden@stryker.com>]

> -----Original Message-----
> From: Ladislav Michl [mailto:ladis@linux-mips.org] 
> Sent: Wednesday, December 12, 2007 4:37 AM
> To: Jason Huang
> Cc: linux-omap-open-source@linux.omap.com
> Subject: Re: 64MB on OMAP1510/5910?
> 
> On Wed, Dec 12, 2007 at 01:21:56AM -0800, Jason Huang wrote:
> > Hello All,
> > 
> > I searched over the mailing list and did not find a solution for
> > OMAP1510/5910 to use more than 32 MB.
> > 
> > Has anyone made 64MB work on 1510/5910?
> 
> Voiceblue board comes with 64MB RAM, however USB host doesn't work,
> because its driver code maps only 32MB staticaly.
> 
> Best regards,
> 	ladis
> 


As I recall, this is possible, but undocumented.  It will work,
depending on the particular SDRAM you have.  

Set the SDRAM_TYPE field of the EMIFF_SDRAM_CONFIG register to 1101.
Even though the TRM (or SPRU673) says this setting is for 8-bit data bus
width, it works for our 16-bit bus configuration, and I can access 64MB.

Perhaps any listening TI folks could elaborate...


Ralph Walden

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