I wanted to have a single SPI transfer repeated continuously in order to feed a DAC for generation of a particular waveform for a medical device, without interruption and minimal jitter (this is why I though to make the change at low level, instead of making the protocol driver to pump several identical messages to SPI subsystem)

I am wondering if this feature could be interesting for other applications and if it is worth to submit a patch for drivers/spi/spi-imx.c

Thank you in advance

  Andrea