1config DM_SPI 2 bool "Enable Driver Model for SPI drivers" 3 depends on DM 4 help 5 Enable driver model for SPI. The SPI slave interface 6 (spi_setup_slave(), spi_xfer(), etc.) is then implemented by 7 the SPI uclass. Drivers provide methods to access the SPI 8 buses that they control. The uclass interface is defined in 9 include/spi.h. The existing spi_slave structure is attached 10 as 'parent data' to every slave on each bus. Slaves 11 typically use driver-private data instead of extending the 12 spi_slave structure. 13