Re: Patch to parameterize DMA_MIN_BYTES for omap2-mcspi

[Anton Habegger <anton.habegger@xxxxxxxxx>]

Hi

I'm interessted about the state of the patch? 
I have a similar situation with a am3352 device and 10kHz SPI 
transfer. (Kernel version 4.1) The number of bytes to transfer are 
in between of 3 and 30. The SPI  worker thread occupies the CPU 
with ~60% load. With a DMA_MIN_BYTES = 10, the CPU load will be 
reduced to 10%, which is still to much in my opinion.

Are there other workarounds or options to get rid of busy waits 
with omap2-mcspi?




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