https://blog.wongcw.com/2021/07/02/linux-5-14%e6%9b%b4%e6%96%b0mips%e4%bb%a3%e7%a2%bc%ef%bc%9a%e6%94%af%e6%8c%81openembed-som9331%e9%96%8b%e7%99%bc%e6%9d%bf/