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AM623: /dev目录无spi设备节点的问题

Part Number: AM623

加载了默认的内核和文件系统,查看了A核/dev目录发现无spi设备节点的问题,也没有spi驱动,请问是这部分功能没有开启吗?内核源码是有spi驱动源码?请问可以通过什么方式或者相关操作步骤来开启?还想请教一下怎么开启A核的dma模式的spi驱动和设备节点?