【Milk-V Duo 开发板免费体验】开启SPI设备

修改设备树文件
/build/boards/cv180x/cv1800b_sophpi_duo_sd/dts_riscv/cv1800b_sophpi_duo_sd.dts
在该文件添加以下内容


This is a companion discussion topic for the original entry at http://forum.sophgo.com/t/topic/85