To use spidev, please open CONFIG_SPI, CONFIG_SPI_FSL_DSPI and CONFIG_SPI_SPIDEV.
They are have been opened in arm64 defconfig.
Moreover, dts need modification, as below, under dspi node:
spidev0: spi@0
{ reg = <0>; compatible = "rohm,dh2228fv"; spi-max-frequency = <3000000>; }
To use spidev, please open CONFIG_SPI, CONFIG_SPI_FSL_DSPI and CONFIG_SPI_SPIDEV.
They are have been opened in arm64 defconfig.
Moreover, dts need modification, as below, under dspi node:
spidev0: spi@0
{ reg = <0>; compatible = "rohm,dh2228fv"; spi-max-frequency = <3000000>; }