Summary

We just dealt with I2C device drivers. It is time for you to pick any I2C device on the market and write the corresponding driver, with DT support. This chapter talked about the kernel I2C core and associated API, including DT support, to give you the necessary skills to talk with I2C devices. You should be able to write efficient probe functions and register with the kernel I2C core. In the next chapter, we will use the skills we learned here to develop the SPI device driver.