> -----Original Message----- > From: davinci-linux-open-source-boun...@linux.davincidsp.com > [mailto:davinci-linux-open-source-boun...@linux.davincidsp.com] On > Behalf Of Stefano Babic > Sent: Wednesday, March 09, 2011 5:02 AM > To: davinci-linux-open-source@linux.davincidsp.com > Subject: SPI Transfer > 64KB - OMAP-L138 > > Hi, > > I have seen an issue transfering blocks >= 64KiB on the SPI interface > with the OMAP-L138. The problem seems to me similar (I think it is the > same) as I the one already found in archive: > > http://comments.gmane.org/gmane.linux.davinci/20581 > > I am testing with 2.6.38 kernel, after I have applied all recent > patches recently sent to add spi support for this processor (mainly to > set up the platform devices). > > I can confirm that transfering blocks smaller as 64KiB works > flawlessly. > Reading the archive, it seems to me that this issue is not yet solved. > However, before going to a deeper analyses, I would like to know if > someone else has seen the same problem, and if there is already a fix > for it.
As far as I am aware there have not been any patches to address this issue. As Sekhar noted in the email thread you referenced, the best solution would probably be to add another dimension to the DMA transfer. I don't think it would be terribly difficult, but it's also not nearly as straightforward as the existing implementation. Regards, Brian > Best regards, > Stefano Babic > > -- > ===================================================================== > DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel > HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany > Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: off...@denx.de > ===================================================================== > _______________________________________________ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source _______________________________________________ Davinci-linux-open-source mailing list Davinci-linux-open-source@linux.davincidsp.com http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
