1 参考文档

https://docs.xilinx.com/v/u/en-US/pg090-axi-iic

https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18841974/Linux+I2C+Driver

2 内核配置

• Kernel Configuration
  I2C is not enabled in the current default kernel configuration. The
  following steps may be used to enable the driver in the kernel
  configuration CONFIG_I2C_XILINX=y

• Devicetree
  https://github.com/Xilinx/linux-xln