RE: Question about PXA27X processor system bus arbiter



It is possible to reconfigure the arbiter while the OS is running, yes.
However, as mentioned in the developer's manual, you should verify what the
rest of the system is doing so that you don't accidentally clobber other
activity.

For instance, if you want more priority for DMA, but when this is needed the
LCD controller is handling a large task, the display performance may suffer
as a consequence.

"Dark Knight" wrote:

hi guys

Is it ok if i change the priorities of DMA and LCD (by setting the
ARB_CNTRL) while OS is running ?

I got this idea while going through this post
http://www.eggheadcafe.com/software/aspnet/31980633/pxa270-ce-50-dma-perfo.aspx

regards,
Vaisakh P S
Accord Software System Pvt. ltd.

.