Hi Swami, Great, I eagerly await the patch.
I will have a look at patch45. Thanks for this valuable info! -- Pete On Wed, Apr 23, 2008 at 11:16 PM, Subbrathnam, Swaminathan <[EMAIL PROTECTED]> wrote: > > > > Peter, > > The issue you mentioned w.r.t SD card performance will be resolved with a > new patch. The patch is still under testing and you can contact your local > TI Engineer for the date when it will be available for customers. > > > Another approach could be that you could take patch45 from the DM6446 update > site at MV and apply to your kernel for DM355. This patch is currently > available for DM6446 only and you might need to do some small porting effort > to get it on DM355 kernel. With this you should be able to see considerable > performance increase. > > regards > swami > > ________________________________ > From: [EMAIL PROTECTED] on behalf of > Peter Sommerfeld > Sent: Thu 4/24/2008 12:22 AM > To: [email protected] > Subject: DM355: Unacceptable SD card write performance > > > > > > Hi, > > I've been doing some testing with SD card writes on the DM355 devkit. > The performance is dismal. > > I am using a kernel retrieved from TI's site on Apr 20/08. I built the > kernel with the only change to the config being the inclusion of the > resizer driver. > > On Windows Vista, my 150x 2GB SD card gets a write speed of > 4 GB/s > over a 128 MB file. On the embedded system my write speed is 135 kB/s > - an unbelievable 3%!! > > Has anyone looked at the SD driver and/or SD interface? I was not > planning on touching this driver, never mind having to rewrite big > chunks of it :( > > Peter > _______________________________________________ > Davinci-linux-open-source mailing list > [email protected] > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
