Re: [U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-13 Thread Ghorai, Sukumar
> -Original Message- > From: u-boot-boun...@lists.denx.de [mailto:u-boot-boun...@lists.denx.de] > On Behalf Of chris c > Sent: Tuesday, October 12, 2010 6:55 AM > To: u-boot@lists.denx.de > Subject: Re: [U-Boot] Testing Data Cache for armv7 (beagleboard) > > Th

Re: [U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-11 Thread chris c
Thanks for the replies. I didn't realize that the MMC module was operating in 1-bit mode inside U-boot. I'll concentrate on looking at that. Has anybody done any work to try and get 4-bit mode working for OMAP3 in U-boot? Thanks, Chris On Thu, Oct 7, 2010 at 1:04 PM, Wolfgang Denk wrote: > D

Re: [U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-07 Thread Wolfgang Denk
Dear chris c, In message you wrote: > > I was comparing time just by timing it manually. How did you instrument > u-boot to display the time? That's no instrumentation of U-Boot, but just timestamping the output on the serial console. See for example ftp://ftp.denx.de/pub/tools/time_log > As

Re: [U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-07 Thread chris c
Heiko, I was comparing time just by timing it manually. How did you instrument u-boot to display the time? As for the small versus large file, I did the same test for 1MB of data using nand read and saw a x4 performance advantage. I also did a test on mmc with 100 MB file and saw no performance

Re: [U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-06 Thread Heiko Schocher
Hello Chris, chris chriss wrote: > I'm trying to test the cache on my beagle with a snapshot from the git tree > today. I tried it out by loading a file from the mmc with dcache off and > then dcache on. I didn't see any difference in speed. After reading this > commit (http://git.denx.de/?p=u-

Re: [U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-06 Thread Reinhard Meyer
Dear chris chriss, > I'm trying to test the cache on my beagle with a snapshot from the git tree > today. I tried it out by loading a file from the mmc with dcache off and > then dcache on. I didn't see any difference in speed. After reading this > commit (http://git.denx.de/?p=u-boot.git;a=comm

[U-Boot] Testing Data Cache for armv7 (beagleboard)

2010-10-06 Thread chris chriss
I'm trying to test the cache on my beagle with a snapshot from the git tree today. I tried it out by loading a file from the mmc with dcache off and then dcache on. I didn't see any difference in speed. After reading this commit (http://git.denx.de/?p=u-boot.git;a=commit;h=95c6f6d), I expected t