Hi Folks, I have recently decided to learn embedded linux development and I am currently working on a project to use the SPI on Beagle Bone to transfer 64+bytes of data as one block in one write cycle to an Atmel SAM 32 bit uC. I would like to use DMA with the SPI and I have read online that this is not possible from user space with spidev. I came across omap2_mcspi.c driver and I noticed that this has dma functions in it. I would like to enable two DMA channels(tx and rx) to provide and receive data from the respective registers on the SPI. Could someone guide as to how I am to go about using omap2_mcspi? Would i need to make a module?
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