Good morning, In one of my projects I interface with subsystems using a spibus, which performs really bad. If I look at the spidev driver, this thing uses a spinlock (busy polling) while performing the datatransfer and thereby blocking the kernel. Is there are any alternative? E.g.
1. A better spidriver in the kernel (non-blocking, irq based) 2. A spidriver in de PRUSS ... Best, Kees P.S. Currently, I connect to at most 20 devices using SPI, but the performance is disappointing. >From each of the devices I read 13 bytes of data, in total 2080 bits, which -theoretically- takes with a bus frequency of 30 kHz about 69 ms or ~7% CPU. In practice about 10% CPU. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
