DCMD_SPI_*

The devctl() commands that apply to the Serial Perphiral Interface framework have cover functions:

Command Cover function
DCMD_SPI_GET_DEVINFO spi_getdevinfo()
DCMD_SPI_GET_DRVINFO spi_getdrvinfo()
DCMD_SPI_SET_CONFIG spi_setcfg()

For more information, see the SPI (Serial Peripheral Interface) Framework technote.