On Fri, 21 Jan 2011, Pawel Moll wrote: > VE suffers from serious problem with MMC transfers - low performance, > errors when other IO peripherals (especially USB) are used at the > same time etc. > > It all boils down to the MMC controller short FIFO and - in result - > timing constrains. The most problematic case - USB driver hogging > CPU and MMC FIFO under/overruns in the result - can be mitigated on > SMP system by distributing interrupts handling for these peripherals > between cores.
Wouldn't the ultimate solution be to simply use FIQs to service the MMC FIFO? Nicolas _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
