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This is a fork of the DMA capable SPI master driver by Martin Sperl.

In addition to adding DMA it also silences this message

bcm2708_spi bcm2708_spi.0: master is unqueued, this is deprecated

Module arguments

• mode
  2 - dma (default)
  1 - interrupt
  0 - polled
• realtime
  Run with realtime priority

References

• Forked source code: https://github.com/msperl/linux/blob/rpi-3.6.y/drivers/spi/spi-bcm2708.c
• Patch: https://github.com/msperl/linux/pull/1
• Pull request: https://github.com/raspberrypi/linux/pull/147
• Vanilla driver: https://github.com/raspberrypi/linux/blob/rpi-3.6.y/drivers/spi/spi-bcm2708.c